Zeitschriftenartikel: „Resonance Audio“

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Ziarati, Mokhtar. „Magnetic resonance imaging compatible audio headset“. Journal of the Acoustical Society of America 102, Nr. 4 (Oktober 1997): 1924. http://dx.doi.org/10.1121/1.419706.

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Kohmoto, Osamu. „Ferromagnetic Resonance in Metal Audio Tapes“. Japanese Journal of Applied Physics 33, Part 1, No. 12A (15.12.1994): 6542–45. http://dx.doi.org/10.1143/jjap.33.6542.

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Kohmoto, Osamu, und Chester Alexander. „Ferromagnetic resonance in metal-evaporated audio tapes“. Journal of Magnetism and Magnetic Materials 116, Nr. 3 (Oktober 1992): 405–10. http://dx.doi.org/10.1016/0304-8853(92)90122-5.

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4

Todt, I., P. Mittmann, A. Ernst, S. Mutze und G. Rademacher. „In vivoexperiences with magnetic resonance imaging scans in Vibrant Soundbridge type 503 implantees“. Journal of Laryngology & Otology 132, Nr. 5 (23.04.2018): 401–3. http://dx.doi.org/10.1017/s0022215118000518.

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AbstractObjective:To observe the effects of magnetic resonance imaging scans in Vibrant Soundbridge 503 implantees at 1.5Tin vivo.Methods:In a prospective case study of five Vibrant Soundbridge 503 implantees, 1.5T magnetic resonance imaging scans were performed with and without a headband. The degree of pain was evaluated using a visual analogue scale. Scan-related pure tone audiogram and audio processor fitting changes were assessed.Results:In all patients, magnetic resonance imaging scans were performed without any degree of pain or change in pure tone audiogram or audio processor fitting, even without a headband.Conclusion:In this series, 1.5T magnetic resonance imaging scans were performed with the Vibrant Soundbridge 503 without complications. Limitations persist in terms of magnetic artefacts.

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VanLue, Michael. „Cleft Palate Speech and Resonance: An Audio and Video Resource“. Plastic & Reconstructive Surgery 147, Nr. 4 (19.03.2021): 1029–30. http://dx.doi.org/10.1097/prs.0000000000007804.

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Akay, Cengiz, und Aytaç Yalçiner. „A New Weak Field Double Resonance NMR Spectrometer“. Zeitschrift für Naturforschung A 50, Nr. 2-3 (01.03.1995): 177–85. http://dx.doi.org/10.1515/zna-1995-2-309.

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Abstract Weak field NMR and double resonance spectrometers are mostly homemade. In this work, some electronic units of such a spectrometer operating at 1.437 mT were designed and realized by including new integrated circuits: an audio generator, digital sweep generator, digital additional field and delay unit, Quartz generator, NMR detector(Q-meter), AF-narrowband amplifier, phase shifter and phase sensitive detector.

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ABE, Tamotsu. „Audio equipment. Three conditions of high stiffness, non resonance, and lightweight.“ Journal of the Japan Society for Composite Materials 15, Nr. 2 (1989): 60–63. http://dx.doi.org/10.6089/jscm.15.60.

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Ru, Xue-min, Yue-ting Zhuang und Fei Wu. „Audio steganalysis based on “negative resonance phenomenon” caused by steganographic tools“. Journal of Zhejiang University-SCIENCE A 7, Nr. 4 (14.03.2006): 577–83. http://dx.doi.org/10.1631/jzus.2006.a0577.

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Peng, Chao, HaiXin Sun und En Cheng. „Detection of Weak Audio Signal in Ocean Based on Stochastic Resonance“. Open Automation and Control Systems Journal 7, Nr. 1 (14.09.2015): 1185–90. http://dx.doi.org/10.2174/1874444301507011185.

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Yu, Bin, Jun Hu, Mathias Funk, Rong-Hao Liang, Mengru Xue und Loe Feijs. „RESonance: Lightweight, Room-Scale Audio-Visual Biofeedback for Immersive Relaxation Training“. IEEE Access 6 (2018): 38336–47. http://dx.doi.org/10.1109/access.2018.2853406.

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Wörner, Eckhard, Ch Wild, W. Müller-Sebert, P. Koidl und A. Bankewitz. „Diamond Loudspeaker Cones for High-End Audio Components“. Advances in Science and Technology 48 (Oktober 2006): 142–50. http://dx.doi.org/10.4028/www.scientific.net/ast.48.142.

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Conventional loudspeaker membranes made of metal or synthetic material such as fabric, ceramics or plastics suffer from nonlinearities and cone breakup modes at fairly low audio frequencies. Due to their mass, inertia and limited mechanical stability the speaker membranes made of conventional materials cannot follow the high frequency excitation of the actuating voice-coil. Low sound velocity causes phase shift and sound pressure losses due to interference of adjacent parts of the membrane at audible frequencies. Therefore, loudspeaker engineers are searching for lightweight but extremely rigid materials to develop speaker membranes whose cone resonances are well above the audible range. With its extreme hardness, paired with low density and high velocity of sound, diamond is a highly promising candidate for such applications. We report on the realization of dome shaped CVD diamond membranes by deposition on curved silicon substrates. Domes with diameters between 20 and 65 mm and with a thickness ranging from 50 to 120 μm were prepared. After deposition, the substrate is dissolved and the rim of the diamond dome is cut by laser scribing. Free standing diamond membranes are mounted onto dynamic voice coils and integrated into tweeter and/or midrange driver chassis. Extended tests and optimisations led to loudspeaker systems that show a second and third harmonic distortion behaviour in the important frequency range between 3 to 10 kHz that is reduced by 40% in comparison to already excellent established values obtained with sapphire membranes. Cone resonance frequencies of CVD diamond membranes are increased by a factor of two, as predicted by simulations.

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Lemaire, Colette, Gerald R. Moran und Hans Swan. „Impact of audio/visual systems on pediatric sedation in magnetic resonance imaging“. Journal of Magnetic Resonance Imaging 30, Nr. 3 (September 2009): 649–55. http://dx.doi.org/10.1002/jmri.21870.

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Silver, Amanda L., Katherine Nimkin, Jean E. Ashland, Satrajit S. Ghosh, Andre J. W. van der Kouwe, Matthew T. Brigger und Christopher J. Hartnick. „Cine Magnetic Resonance Imaging With Simultaneous Audio to Evaluate Pediatric Velopharyngeal Insufficiency“. Archives of Otolaryngology–Head & Neck Surgery 137, Nr. 3 (21.03.2011): 258. http://dx.doi.org/10.1001/archoto.2011.11.

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Bresch, Erik, Jon Nielsen, Krishna Nayak und Shrikanth Narayanan. „Synchronized and noise-robust audio recordings during realtime magnetic resonance imaging scans“. Journal of the Acoustical Society of America 120, Nr. 4 (Oktober 2006): 1791–94. http://dx.doi.org/10.1121/1.2335423.

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McKinney, Martin F., und Dirk Moelants. „Ambiguity in Tempo Perception: What Draws Listeners to Different Metrical Levels?“ Music Perception 24, Nr. 2 (01.12.2006): 155–66. http://dx.doi.org/10.1525/mp.2006.24.2.155.

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The distribution of listeners’ perceived tempi across large collections of music has been modeled previously by a resonance function with a peak near the “preferred tempo” of 120 beats per minute (BPM) [Van Noorden and Moelants, J. New Music Res., 28, 43–66]. Here, through a series of experiments in which listeners were asked to tap to the most salient pulse of musical excerpts,we examined distributions of tapped tempi from single musical excerpts to see if the global resonance of preferred tempo is dependent on musical content. Results show that for some musical excerpts, the distribution of perceived tempi conforms to the global resonant form in that metrical levels with tempi near 120 BPM were perceived as most salient, while for other excerpts the most saliently perceived tempo sat well above or below 120 BPM. We then used a model, which quantifies relative strengths of periodicities in the audio signal, to demonstrate that deviations from the “preferred tempo” can be partially explained by dynamic rhythmic accents drawing listeners to tempi away from the resonance.

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Toop, David. „Sound Body: The Ghost of a Program“. Leonardo Music Journal 15 (Dezember 2005): 28–35. http://dx.doi.org/10.1162/lmj.2005.15.1.28.

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The author considers the importance of the voice as a transformative instrument in 20th-century art, particularly in relation to the tape recorder and digital audio technology. He examines his collaborative work with sound poet Bob Cobbing in the 1970s and compares this with a recent gallery installation created with artist John Latham. Research from the 1970s into acoustic voice masking and resonance is contrasted with the use of analog tape process-ing and the sonic potential of computer audio software programs both in studio work and in improvised performance. Finally, the author discusses the implications of these con-frontations between body and machine.

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Gomez, J., Y. Nudell, M. Hagiwara und R. Glickman. „Simultaneous Audio Recording and Cine Magnetic Resonance Imaging of the TMJ: A Feasability Study“. Journal of Oral and Maxillofacial Surgery 77, Nr. 9 (September 2019): e51. http://dx.doi.org/10.1016/j.joms.2019.06.170.

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Bessell, David. „Dynamic Convolution Modeling, a Hybrid Synthesis Strategy“. Computer Music Journal 37, Nr. 1 (März 2013): 44–51. http://dx.doi.org/10.1162/comj_a_00159.

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This article outlines a hybrid approach to the synthesis of percussion sounds. The synthesis method described here combines techniques and concepts from physical modeling and convolution to produce audio synthesis of percussive instruments. This synthesis method not only achieves a high degree of realism in comparison with audio samples but also retains some of the flexibility associated with waveguide physical models. When the results are analyzed, the method exhibits some interesting detailed spectral features that have some aspects in common with the behavior of acoustic percussion instruments. In addition to outlining the synthesis process, the article discusses some of the more creative possibilities inherent in this approach, e.g., the use and free combination of excitation and resonance sources from beyond the realms of the purely percussive examples given.

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Wu, Jiayue. „Promoting Contemplative Culture through Media Arts“. Multimodal Technologies and Interaction 3, Nr. 2 (21.05.2019): 35. http://dx.doi.org/10.3390/mti3020035.

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This paper presents the practice of designing mediation technologies as artistic tools to expand the creative repertoire to promote contemplative cultural practice. Three art–science collaborations—Mandala, Imagining the Universe, and Resonance of the Heart—are elaborated on as proof-of-concept case studies. Scientifically, the empirical research examines the mappings from (bodily) action to (sound/visual) perception in technology-mediated performing art. Theoretically, the author synthesizes media arts practices on a level of defining general design principles and post-human artistic identities. Technically, the author implements machine learning techniques, digital audio/visual signal processing, and sensing technology to explore post-human artistic identities and give voice to underrepresented groups. Realized by a group of multinational media artists, computer engineers, audio engineers, and cognitive neuroscientists, this work preserves, promotes, and further explores contemplative culture with emerging technologies.

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Schwarz, Andrea. „Magnetic resonance apparatus with multiple microphones for improving clarity of audio signals for a patient“. Journal of the Acoustical Society of America 117, Nr. 5 (2005): 2701. http://dx.doi.org/10.1121/1.1932404.

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Di Stadio, Arianna, Laura Dipietro, Daniela Messineo, Massimo Ralli, Giampietro Ricci, Antonio Greco und Michael J. Brenner. „Arachnoid Cysts of the Internal Auditory Canal: Multiplanar Magnetic Resonance Imaging With Audio‐Vestibular Correlates“. Laryngoscope 131, Nr. 10 (21.06.2021): 2323–31. http://dx.doi.org/10.1002/lary.29699.

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Yan, Jiaquan, Haixin Sun, En Cheng, Xiaoyan Kuai und Xiaoliang Zhang. „Ship Radiated Noise Recognition Using Resonance-Based Sparse Signal Decomposition“. Shock and Vibration 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/6930605.

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Under the complex oceanic environment, robust and effective feature extraction is the key issue of ship radiated noise recognition. Since traditional feature extraction methods are susceptible to the inevitable environmental noise, the type of vessels, and the speed of ships, the recognition accuracy will degrade significantly. Hence, we propose a robust time-frequency analysis method which combines resonance-based sparse signal decomposition (RSSD) and Hilbert marginal spectrum (HMS) analysis. First, the observed signals are decomposed into high resonance component, low resonance component, and residual component by RSSD, which is a nonlinear signal analysis method based not on frequency or scale but on resonance. High resonance component is multiple simultaneous sustained oscillations, low resonance component is nonoscillatory transients, and residual component is white Gaussian noises. According to the low-frequency periodic oscillatory characteristic of ship radiated noise, high resonance component is the purified ship radiated noise. RSSD is suited to noise suppression for low-frequency oscillation signals. Second, HMS of high resonance component is extracted by Hilbert-Huang transform (HHT) as the feature vector. Finally, support vector machine (SVM) is adopted as a classifier. Real audio recordings are employed in the experiments under different signal-to-noise ratios (SNRs). The experimental results indicate that the proposed method has a better recognition performance than the traditional method under different SNRs.

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Szycik, G. R., Z. Ye, B. Mohammadi, W. Dillo, B. T. te Wildt, A. Samii, H. Frieling, S. Bleich und T. F. Münte. „Maladaptive connectivity of broca’s area in schizophrenia during audiovisual speech perception: an FMRI study“. European Psychiatry 26, S2 (März 2011): 1512. http://dx.doi.org/10.1016/s0924-9338(11)73216-3.

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IntroductionNatural speech perception relies on both, auditory and visual information. Both sensory channels provide redundant and complementary information, such that speech perception is enhanced in healthy subjects, when both information channels are present.ObjectivesPatients with schizophrenia have been reported to have problems regarding this audiovisual integration process, but little is known about which neural processes are altered.AimsIn this study we investigated functional connectivity of Broca’s area in patients with schizophrenia.MethodsFunctional magnetic resonance imaging (fMRI) was performed in 15 schizophrenia patients and 15 healthy controls to study functional connectivity of Broca’s area during perception of videos of bisyllabic German nouns, in which audio and video either matched (congruent condition) or die not match (incongruent; e.g. video = hotel, audio = island).ResultsThere were differences in connectivity between experimental groups and between conditions. Broca’s area of the patient group showed connections to more brain areas than the control group. This difference was more prominent in the incongruent condition, for which only one connection between Broca's area and the supplementary motor area was found in control participants, whereas patients showed connections to 8 widely distributed brain areas.ConclusionsThe findings imply that audiovisual integration problems in schizophrenia result from maladaptive connectivity of Broca's area in particular when confronted with incongruent stimuli and are discussed in light of recent audio visual speech models.

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Liu, Xiao Dong, Hai Dong Lei und Jian Jun Zhang. „Frequency Stabilization of the Diode Laser to the Extra Reference Cavity“. Applied Mechanics and Materials 198-199 (September 2012): 1235–40. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.1235.

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The Semiconductor laser frequency stabilization is the important study topic because of its increasing popular. We introduce a simply experimental setup method of the frequency stabilization of a 780 nm diode laser by only a tiny current in the laser audio modulation, photodiode receiver, and locking the transmission peaks. Use this method, the laser can be locked to the resonance peak of the Fabry-Perot cavity. The linewidth of laser is below 400 kHz, and it runs continually above 3 hours.

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Ricke, J., L. Kleinholz, N. Hosten, W. Zendel, A. Lemke, W. Wielgus, K. H. Vöge, E. Fleck, R. Marciniak und R. Felix. „Telemedicine in Rural Areas. Experience with Medical Desktop-Conferencing via Satellite“. Journal of Telemedicine and Telecare 1, Nr. 4 (Dezember 1995): 224–28. http://dx.doi.org/10.1177/1357633x9500100406.

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Cooperation between physicians in hospitals in rural areas can be assisted by desktop-conferencing using a satellite link. For six weeks, medical desktop-conferencing was tested during daily clinical conferences between the Virchow-Klinikum, Berlin, and the Medical Academy, Wroclaw. The communications link was provided by the German Telekom satellite system MCS, which allowed temporary connections to be established on demand by manual dialling. Standard hardware and software were used for videoconferencing, as well as software for medical communication developed in the BERMED project. Digital data, such as computed tomography or magnetic resonance images, were transmitted by a digital data channel in parallel to the transmission of analogue video and audio signals. For conferences involving large groups of people, hardware modifications were required. These included the installation of a video projector, adaptation of the audio system with improved echo cancellation, and installation of extra microphones. Learning to use an unfamiliar communication medium proved to be uncomplicated for the participating physicians.

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Almazrouei, Najlaa K., Michael I. Newton und Robert H. Morris. „Operational Amplifiers Revisited for Low Field Magnetic Resonance Relaxation Time Measurement Electronics“. Proceedings 42, Nr. 1 (14.11.2019): 1. http://dx.doi.org/10.3390/ecsa-6-06645.

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Advances in permanent magnet technology has seen more reports of sensor applications of low field magnetic resonance. Whilst most are either in the 10–20 MHz range or in the earth’s field, measurements at below 1 MHz are beginning to become more widespread. This range is below the need for careful radio frequency electronics design but above the audio domain and represents an interesting cross over. Many commercial spectrometers do not include the pulse power amplifier, duplexer and preamplifier as these depend on the frequency range used. In this work we demonstrate that, with the current specifications of the humble operational amplifier, the most simple form of an inverting design using only two resistors and decoupling, can effectively provide this ‘front end’ electronics. The low powers used mean crossed Ge diodes provide an excellent duplexer and it is suitable for battery powered applications.

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Hardy, Teresa L. D., Carol A. Boliek, Daniel Aalto, Justin Lewicke, Kristopher Wells und Jana M. Rieger. „Contributions of Voice and Nonverbal Communication to Perceived Masculinity–Femininity for Cisgender and Transgender Communicators“. Journal of Speech, Language, and Hearing Research 63, Nr. 4 (27.04.2020): 931–47. http://dx.doi.org/10.1044/2019_jslhr-19-00387.

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Purpose The purpose of this study was twofold: (a) to identify a set of communication-based predictors (including both acoustic and gestural variables) of masculinity–femininity ratings and (b) to explore differences in ratings between audio and audiovisual presentation modes for transgender and cisgender communicators. Method The voices and gestures of a group of cisgender men and women ( n = 10 of each) and transgender women ( n = 20) communicators were recorded while they recounted the story of a cartoon using acoustic and motion capture recording systems. A total of 17 acoustic and gestural variables were measured from these recordings. A group of observers ( n = 20) rated each communicator's masculinity–femininity based on 30- to 45-s samples of the cartoon description presented in three modes: audio, visual, and audio visual. Visual and audiovisual stimuli contained point light displays standardized for size. Ratings were made using a direct magnitude estimation scale without modulus. Communication-based predictors of masculinity–femininity ratings were identified using multiple regression, and analysis of variance was used to determine the effect of presentation mode on perceptual ratings. Results Fundamental frequency, average vowel formant, and sound pressure level were identified as significant predictors of masculinity–femininity ratings for these communicators. Communicators were rated significantly more feminine in the audio than the audiovisual mode and unreliably in the visual-only mode. Conclusions Both study purposes were met. Results support continued emphasis on fundamental frequency and vocal tract resonance in voice and communication modification training with transgender individuals and provide evidence for the potential benefit of modifying sound pressure level, especially when a masculine presentation is desired.

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SCHULZ, DOROTHEA E. „The Moral Resonance of Arab Media: Audio-Cassette Poetry and Culture in Yemen by Flagg Miller“. American Ethnologist 39, Nr. 1 (Februar 2012): 213–15. http://dx.doi.org/10.1111/j.1548-1425.2011.01358_11.x.

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Chang, J. R., und C. N. Wang. „Bass Extension of Microspeaker System on Mobile Device“. Journal of Mechanics 35, Nr. 4 (02.08.2018): 487–98. http://dx.doi.org/10.1017/jmech.2018.28.

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ABSTRACTThis study provides a solution for the bass extension of a microspeaker system in a mobile device that involves using a resonant combination of a front chamber and a rectangular, long, pipe-shaped port. The efficient resonant coupling of the microspeaker system to the acoustic load in this structure enables a microspeaker with modest cone displacement to achieve a high sound pressure level (SPL) and bass extension below the resonance of the microspeaker in free air, and the total dimensions of the structure are minimized. A combination of electro-mechanic-acoustic and finite element methods was applied to determine the SPL and bass extension levels for mobile devices. Simulation results show acceptable agreement with experimental results. A suitable extended-range microspeaker system was applied in a 10 inch tablet. The audio frequency response could be extended from 630 to 300 Hz with the greatest loudness. As much as possible add low bound frequency extension to make the article more clear. Finally, five cases of parameter settings for the front chamber volume, rear chamber volume, rectangular pipe-shaped port, cross-sectional area, and opening area were studied. The results can be applied for optimizing a suitable extended-range microspeaker system.

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Ermolaev, V. A., Y. A. Kropotov und A. Y. Proskuryakov. „Identification of the acoustic signal models of audio exchange systems under conditions of interference and acoustic feedback“. Computer Optics 44, Nr. 3 (Juni 2020): 454–65. http://dx.doi.org/10.18287/2412-6179-co-655.

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In this paper questions of building models of information exchange systems with discrete and distributed delay and with delayed feedback by methods of the theory of linear functional differential equations are investigated. When solving the said equations, it is necessary to consider restrictions caused by the uncertainties in the system under modeling, such as the absence of the exact data on the parameters of the model elements, their natural spread and temporal variations, thus requiring the solution of an identification problem. The models with continuous aftereffect introduced in this work take a fuller account of reflected signal characteristics in closed space, which increases the reliability of modeling results in comparison with the known differential models. At the same time, there is a problem of finding functions that characterize the value distribution of the echo delay. In this work, these functions (kernels) are approximated by a number of exponents, which simplifies the equations and allows the assumption that the aftereffect can be concentrated on both final and infinite intervals. The echo components caused by closed-space resonances are modeled by transfer functions of the corresponding linear links. In numerical modeling, a single-channel model represented by a second-order resonance link and a pulse-shaped kernel described by a sum of two decreasing exponents is considered. The analysis of stability of the models of systems with delayed feedback is conducted by a frequency method. In the paper an approach to estimating the correlation and spectral functions of signals and noise components based on the parametric representation of the latter is considered. The paper also considers issues relating to the practical significance of the research results.

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Enflo, Laura, Johan Sundberg, Camilla Romedahl und Anita McAllister. „Effects on Vocal Fold Collision and Phonation Threshold Pressure of Resonance Tube Phonation With Tube End in Water“. Journal of Speech, Language, and Hearing Research 56, Nr. 5 (Oktober 2013): 1530–38. http://dx.doi.org/10.1044/1092-4388(2013/12-0040).

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Purpose Resonance tube phonation in water (RTPW) or in air is a voice therapy method successfully used for treatment of several voice pathologies. Its effect on the voice has not been thoroughly studied. This investigation analyzes the effects of RTPW on collision and phonation threshold pressures (CTP and PTP), the lowest subglottal pressure needed for vocal fold collision and phonation, respectively. Method Twelve mezzo-sopranos phonated into a glass tube, the end of which was placed under the water surface in a jar. Subglottal pressure, electroglottography, and audio signals were recorded before and after exercise. Also, the perceptual effects were assessed in a listening test with an expert panel, who also rated the subjects' singing experience. Results Resonance tube phonation significantly increased CTP and also tended to improve perceived voice quality. The latter effect was mostly greater in singers who did not practice singing daily. In addition, a more pronounced perceptual effect was found in singers rated as being less experienced. Conclusion Resonance tube phonation significantly raised CTP and tended to improve perceptual ratings of voice quality. The effect on PTP did not reach significance.

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Mendes, Raquel Metzker, Carlo Rondinoni, Marisa de Cássia Registro Fonseca, Rafael Inácio Barbosa, Carlos Ernesto Garrido Salmón, Cláudio Henrique Barbieri und Nilton Mazzer. „Cortical and functional responses to an early protocol of sensory re-education of the hand using audio–tactile interaction“. Hand Therapy 23, Nr. 2 (07.12.2017): 45–52. http://dx.doi.org/10.1177/1758998317746699.

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Introduction Early sensory re-education techniques are important strategies associated with cortical hand area preservation. The aim of this study was to investigate early cortical responses, sensory function outcomes and disability in patients treated with an early protocol of sensory re-education of the hand using an audio-tactile interaction device with a sensor glove model. Methods After surgical repair of median and/or ulnar nerves, participants received either early sensory re-education twice a week with the sensor glove during three months or no specific sensory training. Both groups underwent standard rehabilitation. Patients were assessed at one, three and six months after surgery on training-related cortical responses by functional magnetic resonance imaging, sensory thresholds, discriminative touch and disability using the Disabilities of the Arm, Shoulder and Hand patient-reported questionnaire. Results At six-months, there were no statistically significant differences in sensory function between groups. During functional magnetic resonance imaging, trained patients presented complex cortical responses to auditory stimulation indicating an effective connectivity between the cortical hand map and associative areas. Conclusion Training with the sensor glove model seems to provide some type of early cortical audio-tactile interaction in patients with sensory impairment at the hand after nerve injury. Although no differences were observed between groups related to sensory function and disability at the intermediate phase of peripheral reinnervation, this study suggests that an early sensory intervention by sensory substitution could be an option to enhance the response on cortical reorganization after nerve repair in the hand. Longer follow-up and an adequately powered trial is needed to confirm our findings.

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Zhumalieva, E., A. Furtikova, N. Vychigzhanina und E. Kondratieva. „Disorders of Social Adaptation of Newborns With Very Low and Extremely Low Birth Weight“. Bulletin of Science and Practice 6, Nr. 1 (15.01.2020): 79–90. http://dx.doi.org/10.33619/2414-2948/50/08.

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Disorders in children born with very low body weight and extremely low body weight are considered. Under supervision were 253 children from various regions of the Kyrgyz Republic from 2010 to 2015. Used generally accepted laboratory research methods. Instrumental examination included ultrasound examination of the brain in two projections. An ultrasound examination of the heart was carried out, as well as lungs were examined by X-ray, abdominal organs by ultrasound. If necessary, nuclear magnetic resonance imaging (MRI) of the brain was performed in the phase of physiological or drug sleep. All children underwent audio screening. By early diagnosis, the effectiveness of therapeutic measures was determined.

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Přibil, Jiří, Anna Přibilová und Ivan Frollo. „Analysis of Energy Relations between Noise and Vibration Signals in the Scanning Area of an Open-Air MRI Device“. Proceedings 4, Nr. 1 (14.11.2018): 29. http://dx.doi.org/10.3390/ecsa-5-05730.

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The paper analyzes the influence of different magnetic resonance (MR) scan sequence parameters (echo time, repetition time, orientation of scan slices, sequence type, mass of a tested object) on the energy of the produced noise and vibration. The measured sound pressure levels, together with the recorded noise and vibration signals, were stored in a database and then processed using similar methods to speech signal analysis because the main frequencies of the acoustic noise and vibration lie in the standard audio frequency range. In the signal processing phase, four types of parameters describing the signal energy were determined and statistically analyzed, and the obtained results were visually and numerically compared.

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Al-Barki, Ali Amer, Jibril Yahya Hudise, Nadeem Malik, Montasir Junaid und Ali Almothahbi. „Role of MRI in audio-vestibular dysfunction; is it cost-effective?“ International Journal of Otorhinolaryngology and Head and Neck Surgery 4, Nr. 1 (22.12.2017): 80. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20175123.

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Background: Till date, debate still exists among researchers regarding the use of magnetic resonance imaging (MRI) in all the cases presenting as asymmetrical sensorineural hearing loss (SNHL). The objective of the study was to investigate cost-effectiveness of MRI for evaluating patients with audiovestibular symptoms. Methods: A retrospective study was carried out included all adult patients (>12 years) presenting over a 12 month period between November 2014 and October 2015 at Otolaryngology department clinic, Armed Forces Hospital. Khamis Mushait, Saudi Arabia with asymmetrical sensorineural hearing loss (sudden or progressive) and have underwent MRI of cerebellopontine angle and internal auditory meati for evaluation of audiovestibular symptoms. Results: The study included 52 patients with audiovestibular symptoms. Their mean age (±SD) was 46 (±13.9) years and almost two-thirds of them (65.4%) were males. Majority of them were presented with deafness (84.6%). Vertigo and tinnitus were presented in 38.5% and 53.8% of them, respectively. Over the studied 52 patients, MRI of cerebellopontine angle yielded no detectable lesion in any case. Conclusions: MRI was not cost-effective, so it is important that clinical and audiometric indications for MRI referral criteria should be reviewed and analyzed to ensure cost-effectiveness of MRI in detecting audiovestibular dysfunctions, particularly in situations with financial restraints and long waiting time.

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Meyers, Mark. „“Your brain is no longer your own!”: Mass Media, Secular Religion, and Cultural Crisis in Third Republic France“. Journal of the Canadian Historical Association 18, Nr. 1 (17.06.2008): 133–56. http://dx.doi.org/10.7202/018257ar.

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Abstract This essay examines the historical and discursive process that led various elites in Third Republic France (1871–1940) to interpret the modern mass media as vehicles for new, secular forms of religious experience. It argues that this interpretation owed its origins to fin-de-siècle theories about the links between collective behaviour, hypnotic suggestion, and “religiosity.” It also demonstrates that this interpretation enjoyed cultural resonance because of the specific formal properties of new audio-visual media such as radio. Adopting the methodological framework of cultural history, this paper suggests that the symbolic relevance of the term “religion” actually expanded during this period, which is well known for its growing secularism. It thus maintains that secularization in this context was not a uniform or teleological process, but one fraught with ambiguity and complexity.

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Baguley, David M., Graham J. Beynon, Philip L. Greyf, David G. Hardya und David A. Moffat. „Audio-vestibular findings in meningioma of the cerebello-pontine angle: a retrospective review“. Journal of Laryngology & Otology 111, Nr. 11 (November 1997): 1022–26. http://dx.doi.org/10.1017/s0022215100139258.

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AbstractThe aim of this study was the determination of the incidence of symptoms of audio-vestibular dysfunction and of abnormalities on audio-vestibular testing in patients found to have a unilateral meningioma of the cerebello-pontine angle (CPA). The case notes of 25 patients diagnosed with unilateral, sporadic and histologically proven CPA meningioma were retrospectively reviewed. The age range of this series was 31–71 years, with a mean age of 50 years. Two patients were male (eight per cent) and 23 were female (92 per cent). The mean length of history was 44.7 months. The distribution of tumour size was skewed toward larger tumours, with 15 cases (60 per cent) having tumours with a maximum diameter greater than 3.5 cm on imaging. Pure tone audiometry was normal in five cases (20 per cent), and no patients exhibited the high frequency sensorineural hearing loss that is characteristic of vestibular schwannoma. Speech audiometry was normal in 50 per cent of cases. Caloric testing was abnormal in 77 per cent of the 18 cases tested, whilst auditory brainstem responses (ABR) were abnormal in 100 per cent of the 18 cases who had sufficient hearing for this test to be possible. The presence of normal audiometry in patients with a proven CPA lesion indicates that, if in a protocol for investigation, asymmetry of hearing is mandatory then some pathology will be missed. Any suspicion of a CPA lesion warrants investigation even in the absence of hearing loss.The investigation of choice for the identification of CPA lesions has become magnetic resonance imaging (MRI). If this technique is not available then this study indicates that ABR is a suitable and sensitive investigation. It should be borne in mind however that the data in this study has been derived from a series of predominantly large tumours, and the sensitivity of ABR to smaller CPA meningiomata may fall, as is the case for vestibular schwannoma.

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G Korotkov, Konstantin. „Influence of mobile phone to people and protective effect of quantum resonance technology“. Journal of Applied Biotechnology & Bioengineering 7, Nr. 2 (13.03.2020): 48–51. http://dx.doi.org/10.15406/jabb.2020.07.00215.

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Goals and objectives of the study: The goal of this paper was to study the influence of mobile phone radiation to people and possible protective effect of the Quantum Resonance Technology mobile application. Study design: An open, randomized, placebo - controlled trials during two weeks. People was measured initially, randomly divided to two groups and measured after two weeks after listening to Quantum Resonance app, Yippi Wave 3.0 Yippi. Participants of the control group listened to classical music twice a day. Subjects: 40 apparently healthy adults, age 22 – 56 years, 13 men and 27 women, randomly divided into two groups of 20 people. Randomization was based on the random numbers principle. The study protocol was approved by the Institutional Review Board (IRB) of the Federal State Budget Institution “Saint-Petersburg Scientific-Research Institute for Physical Culture”, Russia. All participants signed an informed consent form, where a written and oral explanation of the research protocol was provided. Interventions: Participants in control group for two weeks, twice a day was listening to classical music; participants in an experimental group for two weeks, twice a day was listening to Quantum Resonance Technology apps Yippi Wave 3.0 audio programs via their mobile phone. Outcome measures: Measurement of stress and energy coefficients with bio-well technology. Results: The results of this study show that people react differently to the radiation from the mobile phone: for some people, turning the phone on in ringing mode does not cause any reaction, while for others it increases the level of stress. After using Quantum Resonance Technology apps Yippi Wave 3.0 via the mobile phone for two weeks all participants of the experimental group did not respond to the radiation of the mobile phone, while for the participants of the control group reactions was the same. Conclusions: Quantum Resonance Technology apps Yippi Wave 3.0 applications have energized and protective effects on humans. This study should be considered a pilot study and the results are preliminary.

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Vandsø, Anette. „The resonating past - Stephen Vitiello’s World Trade Center Recordings as a lieu de mémoire“. SoundEffects - An Interdisciplinary Journal of Sound and Sound Experience 7, Nr. 2 (21.12.2017): 45–63. http://dx.doi.org/10.7146/se.v7i2.102925.

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Although many studies have focussed on the visual and textual media practices surrounding the cultural commemoration of 9/11, few have examined the audio media practices related to the event. As a response to this lack the article is an analysis of Stephen Vitiello’s World Trade Center Recordings: Winds After Hurricane Floyd (1999) as it was installed at the MoMA PS1 memorial exhibition September 11 (2011) which explored the ‘enduring and far-reaching resonance’ of the attacks. The piece is analysed as what Pierre Nora calls a lieu de mémoire, with a specific focus on what we, in line with media archaeologist Wolfgang Ernst, may call the technical ‘chrono-poetical’ folding of time. The aim of the article is to show how Vitiello’s work, due to its media specific archival practices, addresses the events of 9/11.

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Wesseler, Antje, Attila Óvári, Andrea Javorkova, André Kwiatkowski, Jens E. Meyer und Dietmar E. Kivelitz. „Diagnostic Value of the Magnetic Resonance Imaging With Intratympanic Gadolinium Administration (IT-Gd MRI) Versus Audio-Vestibular Tests in Menièreʼs Disease“. Otology & Neurotology 40, Nr. 3 (März 2019): e225-e232. http://dx.doi.org/10.1097/mao.0000000000002082.

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Tsai, Chen-Gia, Li-Ying Fan, Shu-Hui Lee, Jyh-Horng Chen und Tai-Li Chou. „Specialization of the posterior temporal lobes for audio-motor processing - evidence from a functional magnetic resonance imaging study of skilled drummers“. European Journal of Neuroscience 35, Nr. 4 (Februar 2012): 634–43. http://dx.doi.org/10.1111/j.1460-9568.2012.07996.x.

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Fesina, Mikhail, Igor Deryabin und Gorina Larisa. „ON THE TECHNIQUE OF MISMATCHING THE RESONANT INTERACTIONS OF THE SOUND FIELDS CAUSED BY TECHNICAL OBJECTS WITH THEIR OWN ACOUSTIC MODES IN THE AIR VOLUME OF ROOMS“. Akustika 32 (01.03.2019): 24–29. http://dx.doi.org/10.36336/akustika20193224.

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Noise generating production equipment, which is located in technical rooms, first of all, is represented as power systems (pump and compressor stations, internal combustion engines, diesel-generator units, power electric transformers and electric engines, ventilation systems and air conditioning systems). As a rule, these systems operate on nominal permanent speed operation conditions ns. In their wideband sound radiation spectrum, there are found dominant discrete components which are concentrated in audio spectrum fms = 50…500 Hz, and which are characterized by corresponding sound wavelengths λms. Also, acoustic and temperature eigen fields are appeared in described volumetric air cavity of a technical room, and characterized by acoustic eigenmodes on acoustic vibration frequencies fmА and by sound wavelength λmА. Offered technical methods let eliminate the development of intensive air cavity resonance of sound radiations with proximate values of acoustic vibration frequencies fms and fmА, and sound wavelengths λms and λmА.

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Worrall, David. „Computational Designing of Sonic Morphologies“. Organised Sound 25, Nr. 1 (04.03.2020): 15–24. http://dx.doi.org/10.1017/s1355771819000426.

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Much electroacoustic music composition and sound art, and the commentary that surrounds them, is locked into a materialist sound-object mindset in which the hierarchical organisation of sonic events, especially those developed through abstraction, are considered antithetical to sounds ‘being themselves’. This article argues that musical sounds are not just material objects, and that musical notations, on paper or in computer code, are not just symbolic abstractions, but instructions for embodied actions. When notation is employed computationally to control resonance and gestural actuators at multiple acoustic, psychoacoustic and conceptual levels of music form, vibrant sonic morphologies may emerge from the quantum-like boundaries between them. In order to achieve that result, it is necessary to replace our primary focus of compositional attention from the Digital Audio Workstation sound transformation tools currently in vogue, with those that support algorithmic thinking at all levels of compositional design.

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Azola, Alba, Jeffrey Palmer, Rachel Mulheren, Riccardo Hofer, Florian Fischmeister und W. Tecumseh Fitch. „The physiology of oral whistling: a combined radiographic and MRI analysis“. Journal of Applied Physiology 124, Nr. 1 (01.01.2018): 34–39. http://dx.doi.org/10.1152/japplphysiol.00902.2016.

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The fluid mechanics of whistling involve the instability of an air jet, resultant vortex rings, and the interaction of these rings with rigid boundaries (see http://www.canal-u.tv/video/cerimes/etude_radiocinematographique_d_un_siffleur_turc_de_kuskoy.13056 and Meyer J. Whistled Languages. Berlin, Germany: Springer, 2015, p. 74–774). Experimental models support the hypothesis that the sound in human whistling is generated by a Helmholtz resonator, suggesting that the oral cavity acts as a resonant chamber bounded by two orifices, posteriorly by raising the tongue to the hard palate, and anteriorly by pursed lips (Henrywood RH, Agarwal A. Phys Fluids 25: 107101, 2013). However, the detailed anatomical changes in the vocal tract and their relation to the frequencies generated have not been described in the literature. In this study, videofluoroscopic and simultaneous audio recordings were made of subjects whistling with the bilabial (i.e., “puckered lip”) technique. One whistling subject was also recorded, using magnetic resonance imaging. As predicted by theory, the frequency of sound generated decreased as the size of the resonant cavity increased; this relationship was preserved throughout various whistling tasks and was consistent across subjects. Changes in the size of the resonant cavity were primarily modulated by tongue position rather than jaw opening and closing. Additionally, when high-frequency notes were produced, lateral chambers formed in the buccal space. These results provide the first dynamic anatomical evidence concerning the acoustic production of human whistling. NEW & NOTEWORTHY We establish a new and much firmer quantitative and physiological footing to current theoretical models on human whistling. We also document a novel lateral airflow mechanism used by both of our participants to produce high-frequency notes.

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Lee, Kyung Hoon, Kunhao Yu, Hasan Al Ba’ba’a, An Xin, Zhangzhengrong Feng und Qiming Wang. „Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials“. Research 2020 (05.02.2020): 1–13. http://dx.doi.org/10.34133/2020/4825185.

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Most of the existing acoustic metamaterials rely on architected structures with fixed configurations, and thus, their properties cannot be modulated once the structures are fabricated. Emerging active acoustic metamaterials highlight a promising opportunity to on-demand switch property states; however, they typically require tethered loads, such as mechanical compression or pneumatic actuation. Using untethered physical stimuli to actively switch property states of acoustic metamaterials remains largely unexplored. Here, inspired by the sharkskin denticles, we present a class of active acoustic metamaterials whose configurations can be on-demand switched via untethered magnetic fields, thus enabling active switching of acoustic transmission, wave guiding, logic operation, and reciprocity. The key mechanism relies on magnetically deformable Mie resonator pillar (MRP) arrays that can be tuned between vertical and bent states corresponding to the acoustic forbidding and conducting, respectively. The MRPs are made of a magnetoactive elastomer and feature wavy air channels to enable an artificial Mie resonance within a designed frequency regime. The Mie resonance induces an acoustic bandgap, which is closed when pillars are selectively bent by a sufficiently large magnetic field. These magnetoactive MRPs are further harnessed to design stimuli-controlled reconfigurable acoustic switches, logic gates, and diodes. Capable of creating the first generation of untethered-stimuli-induced active acoustic metadevices, the present paradigm may find broad engineering applications, ranging from noise control and audio modulation to sonic camouflage.

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GOLESTANI, NARLY. „Neuroimaging of phonetic perception in bilinguals“. Bilingualism: Language and Cognition 19, Nr. 4 (06.10.2015): 674–82. http://dx.doi.org/10.1017/s1366728915000644.

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This review addresses the cortical basis of phonetic processing in bilinguals and of phonetic learning, with a focus on functional magnetic resonance imaging studies of phonetic perception. Although results vary across studies depending on stimulus characteristics, task demands, and participants’ previous experience with the non-native/second-language sounds, taken together, the literature reveals involvement of overlapping brain regions during phonetic processing in the first and second language of bilinguals, with special involvement of regions of the dorsal audio-motor interface including frontal and posterior cortices during the processing of new, or ‘difficult’ speech sounds. These findings converge with the brain imaging literature on language processing in bilinguals more generally, during semantic and syntactic processing of words and of connected speech. More brain imaging work can serve to better elucidate the precise mechanisms underlying phonetic encoding and its interaction with articulatory processes, in particular where multiple phonetic repertoires have been or are being acquired.

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Magdziarz, Daniel D., Richard J. Wiet, Elizabeth A. Dinces und Lois C. Adamiec. „Normal audiologic presentations in patients with acoustic neuroma: An evaluation using strict audiologic parameters“. Otolaryngology–Head and Neck Surgery 122, Nr. 2 (Februar 2000): 157–62. http://dx.doi.org/10.1016/s0194-5998(00)70232-4.

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Although several studies have previously reported on patients presenting with “normal” audiologic parameters in acoustic neuroma, the present study is, to our knowledge, the first to exclusively examine in detail cases involving exceptionally stringent objective audiometric features. Of 369 patients with acoustic neuroma who were operated on between April 1980 and April 1997 by our group, 10 had strictly normal hearing, defined as follows: (1) pure-tone average < 20 dB; (2) speech discrimination score > 90%; and (3) interaural differences < 10 dB at every hertz level. A high level of audiologic functioning was found to significantly lower the sensitivity of auditory brainstem response in the detection of acoustic neuroma. Magnetic resonance imaging was the only preoperative test exhibiting 100% sensitivity in this setting. Thus, a high level of clinical suspicion appears warranted in any case involving unexplained unilateral audio-vestibular symptoms—including those instances in which strictly normal hearing parameters exist and are associated with negative auditory brainstem response findings.

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Castick, Sarah, Rachael-Anne Knight und Debbie Sell. „Perceptual Judgments of Resonance, Nasal Airflow, Understandability, and Acceptability in Speakers with Cleft Palate: Ordinal versus Visual Analogue Scaling“. Cleft Palate-Craniofacial Journal 54, Nr. 1 (Januar 2017): 19–31. http://dx.doi.org/10.1597/15-164.

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Objective To investigate the reliability of ordinal versus visual analogue scaling (VAS) ratings for perceptual judgments of nasal resonance, nasal airflow, understandability, and acceptability in speakers with cleft palate. Design Within-subjects comparative study. Setting Multisite. Participants Five specialist speech and language therapists from U.K. Regional Cleft Centres. Outcome Measures Participants rated 30 audio speech samples obtained from the Speech and Language Therapy archives of Great Ormond Street Hospital. They rated the identified speech parameters using each scaling method, with 1 month between rating tasks. The model of best fit was determined to examine validity, and both intra- and inter-rater reliability were also computed. Results VAS ratings were valid for all parameters when plotted against ordinal ratings, and the model of best fit revealed only a slightly stronger curvilinear than linear relationship between the scaling methods. Intra-rater reliability was high for both rating methods across all six speech parameters. There was also high inter-rater reliability for both ordinal and VAS ratings of hypernasality, nasal emission, nasal turbulence, understandability, and acceptability, and for the ordinal ratings of hyponasality. Conclusions Perceptual judgments of nasal resonance, nasal airflow, understandability, and acceptability were similar using VAS and ordinal scaling, indicating that both scaling methods were appropriate for measuring the cleft speech parameters. VAS, however, may offer statistical advantages, and there is a growing body of evidence advocating its use for the measurement of prothetic speech parameters.

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Huh, Gene, Yun Jung Bae, Hyun Jun Woo, Jung Hyun Park, Ja-Won Koo und Jae-Jin Song. „Vestibulocochlear Symptoms Caused by Vertebrobasilar Dolichoectasia“. Clinical and Experimental Otorhinolaryngology 13, Nr. 2 (01.05.2020): 123–32. http://dx.doi.org/10.21053/ceo.2019.00780.

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Objectives. Vertebrobasilar dolichoectasia (VBD), an elongation and distension of vertebrobasilar artery, may present with cranial nerve symptoms due to nerve root compression. The objectives of this study are to summarize vestibulocochlear manifestations in subjects with VBD through a case series and to discuss the needs of thorough oto-neurotologic evaluation in VBD subjects before selecting treatment modalities.Methods. Four VBD subjects with vestibulocochlear manifestations were reviewed retrospectively. VBD was confirmed by either brain or internal auditory canal magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA). Patient information, medical history, MRI/MRA findings, and audiometry or vestibular function tests were reviewed according to patient’s specific symptom.Results. Of the four subjects, three presented with ipsilesional sensorineural hearing loss (SNHL), three with paroxysmal recurrent vertigo, and two with typewriter tinnitus. The MRI/MRA of the four subjects revealed unilateral VBD with neurovascular compression of cisternal segment or the brainstem causing displacement, angulation, or deformity of the cranial nerve VII or VIII that corresponded to the symptoms.Conclusion. Vestibulocochlear symptoms such as SNHL, recurrent paroxysmal vertigo, or typewriter tinnitus can be precipitated from a neurovascular compression of the vestibulocochlear nerve by VBD. Because proper medical or surgical treatments may stop the disease progression or improve audio-vestibular symptoms in subjects with VBD, a high index of suspicion and meticulous radiologic evaluation are needed when vestibulocochlear symptoms are not otherwise explainable, and if VBD is confirmed to cause audiovestibular manifestation, a thorough oto-neurotologic evaluation should be performed before initial treatment.

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Filip, Charles, Michael Matzen, Ingegerd Aagenses, Ragnhild Aukner, Lillian Kjøll, Hans Erik Høgevold, Frank Åbyholm und Kim Tønseth. „Speech and Magnetic Resonance Imaging Results following Autologous Fat Transplantation to the Velopharynx in Patients with Velopharyngeal Insufficiency“. Cleft Palate-Craniofacial Journal 48, Nr. 6 (November 2011): 708–16. http://dx.doi.org/10.1597/09-161.

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Objective To measure velopharyngeal closure with magnetic resonance imaging (MRI) and to evaluate speech when treating velopharyngeal insufficiency (VPI) with autologous fat transplantation to the velopharynx. Patients Nine patients were recruited. Six patients had undergone cleft palate repair and subsequently developed VPI. Three were noncleft patients of which one had developed VPI after nasopharyngeal cancer treatment; another patient had developed VPI after combined adenotonsillectomy, and a third patient had VPI of unknown etiology. Main outcome measure Preoperative and 1-year postoperative MRIs were obtained during vocal rest and during phonation. Data measured were the velopharyngeal distance in the sagittal plane and the velopharyngeal gap area in the axial plane. Preoperative and 1-year postoperative audio recordings were blinded for scoring independently by three senior speech therapists. Results When comparing preoperative and 1-year postoperative MRI during phonation we found a significant reduction of the median velopharyngeal distance from 4 to 0 mm ( p = .011), and a significant reduction of the median velopharyngeal gap area from 42 to 34 mm2 ( p = .038). Nasal turbulence improved significantly ( p = .011). Hypernasality/hyponasality and audible nasal emission did not change significantly. Conclusions Autologous fat transplantation to the velopharynx resulted in a significant reduction of the velopharyngeal distance and the velopharyngeal gap area during phonation, as measured by MRI. This was in accordance with a significant improvement in nasal turbulence. However, hypernasality and audible nasal emission did not change significantly and could not be correlated to the MRI findings.

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