Journal articles on the topic 'Psychoacoustics/hearing science'
To see the other types of publications on this topic, follow the link: Psychoacoustics/hearing science.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 21 journal articles for your research on the topic 'Psychoacoustics/hearing science.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Jo, Hyeryeong, Hyekyung Kong, Suyeon Shin, Mikyung Lee, Kwangjae Kim, Hyungoo Lee, Soohyun Ahn, and Kyoungwon Lee. "Comparison of Preferred Real-Ear Insertion Gain between Open- and Closed-Canal Fitting Hearing Aids." Audiology and Speech Research 17, no. 2 (April 30, 2021): 180–86. http://dx.doi.org/10.21848/asr.200087.
Full textAbstract:
Purpose: To calculate the real-ear insertion gain (REIG) according to the types of hearing aids, we evaluated the preferred REIGs of Korean hearing-impaired listeners and psychoacoustic differences between open-canal fitting (OF) and closed-canal fitting (CF).Methods: The subjects with sensorineural hearing loss were divided into OF group (4 monaural fittings, 15 binaural fittings with 34 ears), and CF group (8 monaural fittings, 13 binaural fittings with 34 ears). There were no statistical differences in hearing threshold level (HTL) at each octave frequencies, word recognition score (WRS) and Korean Adaptation of the International Outcome Inventory for Hearing Aids (K-IOI-HA) between the two groups. When there was no need for further electroacoustic adjustment of the hearing aid, sharpness and occlusion of amplified sound, clarity of sentence, and loudness of noise were evaluated based on the everyday experience. And REIGs with international speech test signal and WRS in sound-treated room were measured.Results: Preferred REIG for HTL was low for OF compared to CF in 0.5 kHz and 0.75 kHz at input SPL of 55 dB, 0.5 kHz at 60 dB SPL, 0.25 kHz and 0.5 kHz at 80 dB SPL. However, there were no differences in aided WRS and psychoacoustics between the two groups.Conclusion: In this study, the preferred REIG of OF and CF groups showed a difference under 0.75 kHz although there were no psychoacoustic differences between the two groups. Therefore, the results of this study should be considered when formulating Korean-type hearing aid fitting formula.
2
Zahorik, Pavel, Shae D. Morgan, and Christian E. Stilp. "Graduate training opportunities in the hearing sciences at the University of Louisville." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A125. http://dx.doi.org/10.1121/10.0015764.
Full textAbstract:
The University of Louisville currently offers two branches of training opportunities for students interested in pursuing graduate training in the hearing sciences: A Ph.D. degree in experimental psychology with concentration in hearing science, and a clinical doctorate in audiology (Au.D.). The Ph.D. degree program offers mentored research training in areas such as psychoacoustics, speech perception, spatial hearing, and multisensory perception, and guarantees students four years of funding (tuition plus stipend). The Au.D. program is a 4-year program designed to provide students with the academic and clinical background necessary to enter audiologic practice. Both programs are affiliated with the Heuser Hearing Institute, which, along with the University of Louisville, provides laboratory facilities and clinical populations for both research and training. An accelerated Au.D./Ph.D. training program that integrates key components of both programs for training of students interested in clinically based research is under development. Additional information is available at: http://louisville.edu/medicine/degrees/audiology and https://louisville.edu/psychology/graduate/experimental.
3
Darwin, C. J. "Listening to speech in the presence of other sounds." Philosophical Transactions of the Royal Society B: Biological Sciences 363, no. 1493 (September 7, 2007): 1011–21. http://dx.doi.org/10.1098/rstb.2007.2156.
Full textAbstract:
Although most research on the perception of speech has been conducted with speech presented without any competing sounds, we almost always listen to speech against a background of other sounds which we are adept at ignoring. Nevertheless, such additional irrelevant sounds can cause severe problems for speech recognition algorithms and for the hard of hearing as well as posing a challenge to theories of speech perception. A variety of different problems are created by the presence of additional sound sources: detection of features that are partially masked, allocation of detected features to the appropriate sound sources and recognition of sounds on the basis of partial information. The separation of sounds is arousing substantial attention in psychoacoustics and in computer science. An effective solution to the problem of separating sounds would have important practical applications.
4
van de Par, Steven, Stephan D. Ewert, Lubos Hladek, Christoph Kirsch, Julia Schütze, Josep Llorca-Bofí, Giso Grimm, Maartje M. E. Hendrikse, Birger Kollmeier, and Bernhard U. Seeber. "Auditory-visual scenes for hearing research." Acta Acustica 6 (2022): 55. http://dx.doi.org/10.1051/aacus/2022032.
Full textAbstract:
While experimentation with synthetic stimuli in abstracted listening situations has a long standing and successful history in hearing research, an increased interest exists on closing the remaining gap towards real-life listening by replicating situations with high ecological validity in the lab. This is important for understanding the underlying auditory mechanisms and their relevance in real-life situations as well as for developing and evaluating increasingly sophisticated algorithms for hearing assistance. A range of ‘classical’ stimuli and paradigms have evolved to de-facto standards in psychoacoustics, which are simplistic and can be easily reproduced across laboratories. While they ideally allow for across laboratory comparisons and reproducible research, they, however, lack the acoustic stimulus complexity and the availability of visual information as observed in everyday life communication and listening situations. This contribution aims to provide and establish an extendable set of complex auditory-visual scenes for hearing research that allow for ecologically valid testing in realistic scenes while also supporting reproducibility and comparability of scientific results. Three virtual environments are provided (underground station, pub, living room), consisting of a detailed visual model, an acoustic geometry model with acoustic surface properties as well as a set of acoustic measurements in the respective real-world environments. The current data set enables i) audio–visual research in a reproducible set of environments, ii) comparison of room acoustic simulation methods with “ground truth” acoustic measurements, iii) a condensation point for future extensions and contributions for developments towards standardized test cases for ecologically valid hearing research in complex scenes.
5
Guan, Shane, and Tiffini Brookens. "The Use of Psychoacoustics in Marine Mammal Conservation in the United States: From Science to Management and Policy." Journal of Marine Science and Engineering 9, no. 5 (May 8, 2021): 507. http://dx.doi.org/10.3390/jmse9050507.
Full textAbstract:
Underwater sound generated from human activities has been long recognized to cause adverse effects on marine mammals, ranging from auditory masking to behavioral disturbance to hearing impairment. In certain instances, underwater sound has led to physical injuries and mortalities. Research efforts to assess these impacts began approximately four decades ago with behavioral observations of large whales exposed to seismic surveys and rapidly progressed into the diverse field that today includes studies of behavioral, auditory, and physiological responses of marine mammals exposed to anthropogenic sound. Findings from those studies have informed the manner in which impact assessments have been and currently are conducted by regulatory agencies in the United States. They also have led to additional questions and identified information needed to understand more holistically the impacts of underwater sound, such as population- and species-level effects, long-term, chronic, and cumulative effects, and effects on taxa for which little or no information is known. Despite progress, the regulatory community has been slow to incorporate the best available science in marine mammal management and policy and often has relied on outdated and overly simplified methods in its impact assessments. To implement conservation measures effectively, regulatory agencies must be willing to adapt their regulatory scheme to ensure that the best available scientific information is incorporated accordingly.
6
Green, John T. "Sir James William Longman Beament. 17 November 1921 — 10 March 2005." Biographical Memoirs of Fellows of the Royal Society 52 (January 2006): 15–27. http://dx.doi.org/10.1098/rsbm.2006.0003.
Full textAbstract:
There were two dominant scientific passions in Jimmie Beament's life: insect physiology and the mechanism of hearing (and psychoacoustics). These accompanied his other passions – his family, music, and Queen's College, Cambridge. Throughout his career, Jimmie's research field remained very much his own, covering permeability and respiration in insects, orientation of lipids, the resistance of insect eggs to desiccation and to insecticides; and latterly the surface adhesion of pollen and the interaction of plant surfaces with rain. Jimmie never had time for research that needed the newest, biggest or most expensive bits of kit. Rather he preferred to choose problems that had never been solved because the means of attacking the problem did not exist. Thus Jimmie (with collaborators such as R. H. J. Brown & K. E. Machin) designed and built innovative, specialized equipment – he was a precision engineer as well as a scientist. Every strand of his life reflected his extraordinary energy and his desire always to move onwards. As in his science, so in his artistic life: from acting to music, first writing revues then as a performer; followed by serious composition and significant works on the theory of hearing and instruments. Above all Jimmie was a polymath – one of an increasingly rare breed of scientists who have a broad understanding of science … and more.
7
Tavana, Hamed, Masoume Rouzbahani, Seyyed Jalal Sameni, and Mohammad Maarefvand. "Examination of Speech Signals’ Intensity Reconstruction Through Evaluation of the Frequency Responses of Behind-the-ear Hearing Aids Fitted With NAL-NL2 and DSLi/o v5 Prescription Formulas." Function and Disability Journal 3, no. 1 (December 30, 2020): 83–90. http://dx.doi.org/10.32598/fdj.3.12.
Full textAbstract:
Background & Objectives: The widespread prevalence of hearing loss can leave restrictive impacts on the acoustic and psychoacoustic hearing components, language and speech development, education, and employment of those with hearing impairments. On the other hand, given that hearing aids are the most commonly used devices to help auditory rehabilitation, and speech is the most essential human interaction signal, the examination of hearing aid’s frequency responses and the capability of intensity reconstruction of speech signals according to the existing standards are of utmost importance. The present study was conducted to compare hearing aid’s performance with two prescription formulas, at three input intensity levels, and two hearing loss configurations. Methods: Using the FRYE FP35 analyzer, the present study examined two Phonak Bolero B50 hearing aids fitted with two prescription formulas (NAL-NL2 and DSLi/o v5) for two degrees of hearing loss (mild to moderately severe and moderately severe to severe) presented with intensity-filtered ISTS speech signals at three input intensities (50, 65, and 80 dB SPL). Results: The DSLi/o v5 formula prescribed higher average gain and intensity reconstruction for both hearing loss degrees and at all three input intensities compared with the NAL-NL2 formula. Conclusion: Depending on the purpose of gain prescription, whether the loudness is important or speech intelligibility, the choice of an appropriate fitting formula can be affected.
8
Kastelein, Ronald A., Lean Helder-Hoek, Linde N. Defillet, Laura Van Acoleyen, Léonie A. E. Huijser, and John M. Terhune. "Temporary Hearing Threshold Shift in California Sea Lions (Zalophus californianus) Due to One-Sixth-Octave Noise Bands Centered at 0.6 and 1 kHz." Aquatic Mammals 48, no. 3 (May 15, 2022): 248–65. http://dx.doi.org/10.1578/am.48.3.2022.248.
Full textAbstract:
To determine the frequency-dependent susceptibility of California sea lions (Zalophus californianus) to noise-induced temporary hearing threshold shift (TTS), one of two subjects were exposed for 60 minutes to two continuous one-sixth-octave noise bands (NBs) as fatiguing sounds: one centered at 0.6 kHz, at sound pressure levels (SPLs) of 168 to 174 dB re 1 µPa (sound exposure levels [SELs] of 204 to 210 dB re 1 µPa2s), or one centered at 1 kHz, at SPLs of 144 to 159 dB re 1 µPa (SELs of 180 to 195 dB re 1 µPa2s). Using a psychoacoustic technique, TTSs were quantified at 0.6, 0.85, 1, 1.2, 1.4, and 2 kHz (at the center frequency of each NB, half an octave higher, and one octave higher). When significant TTS occurred, higher SELs resulted in greater TTSs. In the sea lion that was tested 1 to 4 minutes after exposure to the fatiguing sounds, the largest TTSs occurred when the hearing test frequency was half an octave higher than the center frequency of the two fatiguing sounds. The highest TTS levels elicited were 8.7 dB at 0.85 kHz and 9.6 dB at 1.4 kHz. When their hearing was tested at the same time after the fatiguing sounds stopped, initial TTSs and hearing recovery patterns were similar in both sea lions. These findings will contribute to the protection of hearing of species in the Otariidae family from anthropogenic noise by facilitating the development of an evidence-based underwater sound weighting function.
9
Kastelein, Ronald A., Lean Helder-Hoek, Linde N. Defillet, Femke Kuiphof, Léonie A. E. Huijser, and John M. Terhune. "Temporary Hearing Threshold Shift in California Sea Lions (Zalophus californianus) Due to One-Sixth-Octave Noise Bands Centered at 8 and 16 kHz: Effect of Duty Cycle and Testing the Equal-Energy Hypothesis." Aquatic Mammals 48, no. 1 (January 15, 2022): 36–58. http://dx.doi.org/10.1578/am.48.1.2022.36.
Full textAbstract:
To determine the frequency-dependent susceptibility of California sea lions (Zalophus californianus) to noise-induced temporary hearing threshold shift (TTS), two subjects were exposed for 60 min to two fatiguing sounds: continuous one-sixth-octave noise bands (NBs) centered at 8 kHz (at sound exposure levels [SELs] of 166 to 190 dB re 1 µPa2s) and at 16 kHz (at SELs of 183 to 207 dB re 1 µPa2s). Using a psychoacoustic technique, TTSs were quantified at 8, 11.3, 16, 22.4, and 32 kHz (at the center frequency of each NB, half an octave higher, and one octave higher). For both NBs, higher SELs resulted in greater TTSs. In the SEL ranges that were tested, the largest TTSs occurred when the hearing test frequency was half an octave higher than the frequency of the fatiguing sound. When their hearing was tested at the same time after the fatiguing sounds stopped, initial TTSs and hearing recovery patterns were similar in both sea lions. The effect of fatiguing sound duty cycle on TTS was investigated with the 8 kHz NB, using 1,600 ms signals at a mean sound pressure level (SPL) of 154 dB re 1 µPa. Duty cycle reduction from 100 to 90% resulted in a large decrease in TTS; no TTS was observed at duty cycles ≤ 30%. The equal-energy hypothesis was tested with the 8 kHz NB and found to hold true: five combinations of SPL and exposure duration all resulting in a 182 dB SEL produced similar initial TTSs in both sea lions. These findings will contribute to the protection of otariid hearing from anthropogenic noise by facilitating the development of evidence-based underwater sound weighting functions. Our results also show that the introduction of short inter-pulse intervals to underwater sounds aids in the protection of otariid hearing by allowing recovery to take place.
10
Plesch, Johannes, Benjamin P. Ernst, Sebastian Strieth, and Tobias Rader. "A psychoacoustic application for the adjustment of electrical hearing thresholds in cochlear implant patients." PLOS ONE 14, no. 10 (October 11, 2019): e0223625. http://dx.doi.org/10.1371/journal.pone.0223625.
Full text
11
Konarczak–Stachowiak, Agnieszka. "Wybrane metody rehabilitacji dziecka z zaburzeniami słuchu i mowy." Kultura-Społeczeństwo-Edukacja 10, no. 2 (December 15, 2016): 305–14. http://dx.doi.org/10.14746/kse.2016.10.23.
Full textAbstract:
Music therapy and choreotherapy are two extensive term. They do not apply only music, movement and therapy, but they include a lot of modern science, for example: psychology, music psychology, psychotherapy, psychiatry, medicine, pedagogy, special pedagogy, music education, physic education, audiology, acoustics, psychoacoustic, speech therapy, sociology, music philosophy, musicology and diffrent kind of therapy by art and movement. Therefore sound therapy and movement therapy is trans–disciplinary. It is unique thing like music and natural thing like movement. Basic kind of movement with music in therapy and rehabilitation: dance, recreation with music and movement, gymnastic with music and physical improvisation. The effectiveness of methods that use sound and movement in hearing and speech therapy is due to fact that: music and speech include rhythm, melody, tempo, volume, articulation, timbre, phrasing, accents etc.; speech development can coincide with motor development. The movement is main form child’s development. Disorders in the motor development of the child have a direct or indirect impact on the development of the child’s speech. When we teach our child motor development, also we support the development of speech, becouse the brain has one point that connect these two features. Music and movement activities with elements of music therapy, choreotherapy and rhythm therapy trains sense of rhythm, hearing and music memory and it is very important for harmonious and quiet growing up child’s – on a intellectual, physical, emotional and social plane, because of it all of processes that work in adult organism are improved. Main objective of the activities is develop different skills, attitudes and habits.
12
Cucis, P. A., C. Berger-Vachon, R. Hermann, H. Thaï-Van, S. Gallego, and E. Truy. "Cochlear Implant: Effect of the Number of Channel and Frequency Selectivity on Speech Understanding in Noise Preliminary Results in Simulation with Normal-Hearing Subjects." Modelling, Measurement and Control C 81, no. 1-4 (December 31, 2020): 17–23. http://dx.doi.org/10.18280/mmc_c.811-404.
Full textAbstract:
The cochlear implant is the most successful implantable device for the rehabilitation of profound deafness. However, in some cases, the electrical stimulation delivered by the electrode can spread inside the cochlea creating overlap and interaction between frequency channels. By using channel-selection algorithms like the “nofm” coding-strategy, channel interaction can be reduced. This paper describes the preliminary results of experiments conducted with normal hearing subjects (n = 9). Using a vocoder, the present study simulated the hearing through a cochlear implant. Speech understanding in noise was measured by varying the number of selected channels (“nofm”: 4, 8, 12 and 16of20) and the degree of simulated channel interaction (“Low”, “Medium”, “High”). Also, with the vocoder, we evaluated the impact of simulated channel interaction on frequency selectivity by measuring psychoacoustic tuning curves. The results showed a significant average effect of the signal-to-noise ratio (p < 0.0001), the degree of channel interaction (p < 0.0001) and the number of selected channels, (p = 0.029). The highest degree of channel interaction significantly decreases intelligibility as well as frequency selectivity. These results underline the importance of measuring channel interaction for cochlear implanted patients to have a prognostic test and to adjust fitting methods in consequence. The next step of this project will be to transpose these experiments to implant users, to support our results.
13
Baumgartner, Robert, and Piotr Majdak. "Decision making in auditory externalization perception: model predictions for static conditions." Acta Acustica 5 (2021): 59. http://dx.doi.org/10.1051/aacus/2021053.
Full textAbstract:
Under natural conditions, listeners perceptually attribute sounds to external objects in their environment. This core function of perceptual inference is often distorted when sounds are produced via hearing devices such as headphones or hearing aids, resulting in sources being perceived unrealistically close or even inside the head. Psychoacoustic studies suggest a mixed role of various monaural and interaural cues contributing to the externalization process. We developed a model framework for perceptual externalization able to probe the contribution of cue-specific expectation errors and to contrast dynamic versus static strategies for combining those errors within static listening environments. Effects of reverberation and visual information were not considered. The model was applied to various acoustic distortions as tested under various spatially static conditions in five previous experiments. Most accurate predictions were obtained for the combination of monaural and interaural spectral cues with a fixed relative weighting (approximately 60% of monaural and 40% of interaural). That model version was able to reproduce the externalization rating of the five experiments with an average error of 12% (relative to the full rating scale). Further, our results suggest that auditory externalization in spatially static listening situations underlies a fixed weighting of monaural and interaural spectral cues, rather than a dynamic selection of those auditory cues.
14
Fishbein, Adam R., William J. Idsardi, Gregory F. Ball, and Robert J. Dooling. "Sound sequences in birdsong: how much do birds really care?" Philosophical Transactions of the Royal Society B: Biological Sciences 375, no. 1789 (November 18, 2019): 20190044. http://dx.doi.org/10.1098/rstb.2019.0044.
Full textAbstract:
The complex and melodic nature of many birds' songs has raised interest in potential parallels between avian vocal sequences and human speech. The similarities between birdsong and speech in production and learning are well established, but surprisingly little is known about how birds perceive song sequences. One popular laboratory songbird, the zebra finch ( Taeniopygia guttata ), has recently attracted attention as an avian model for human speech, in part because the male learns to produce the individual elements in its song motif in a fixed sequence. But psychoacoustic evidence shows that adult zebra finches are relatively insensitive to the sequential features of song syllables. Instead, zebra finches and other birds seem to be exquisitely sensitive to the acoustic details of individual syllables to a degree that is beyond human hearing capacity. Based on these findings, we present a finite-state model of zebra finch perception of song syllable sequences and discuss the rich informational capacity of their vocal system. Furthermore, we highlight the abilities of budgerigars ( Melopsittacus undulatus ), a parrot species, to hear sequential features better than zebra finches and suggest that neurophysiological investigations comparing these species could prove fruitful for uncovering neural mechanisms for auditory sequence perception in human speech. This article is part of the theme issue ‘What can animal communication teach us about human language?’
15
Paté, Arthur, Nicolas Côté, Charles Croënne, Jérôme Vasseur, and Anne-Christine Hladky-Hennion. "Perception of loudness changes induced by a phononic crystal in specific frequency bands." Acta Acustica 6 (2022): 42. http://dx.doi.org/10.1051/aacus/2022037.
Full textAbstract:
To study the influence of classical phononic crystal (PC) structures on the acoustical characteristics of a sound source, a combined acoustics/perceptual analysis is conducted on a PC specially designed to exhibit several spectral and wave vector properties in different audible frequency ranges. The properties, confirmed by both numerical calculations and experiments, consist in both partial and absolute band gaps, as well as a negative refraction band. A psychoacoustic feature, namely the loudness in third-octave bands, is estimated from numerical simulations of the acoustic field behind the crystal. Additional perceptual tests are conducted to evaluate the efficiency of the PC slab. In the frequency range of the band gaps, sound stimuli filtered by the PC’s impulse response are perceived as softer than stimuli resulting from a free-field propagation (FF), they also are perceived as equally (or close to equally) loud than sounds attenuated by a free-standing rigid wall (FS). In the frequency range of the focalization (negative refraction), PC sound stimuli sound louder than both FS and FF sound stimuli. The possibility of designing an efficient sound barrier based on the considered PC is finally discussed.
16
Wang, Qiaochu, Wang Hongwei, Junli Cai, and Lin Zhang. "The multi-dimensional perceptions of office staff and non-office staff about metro noise in commercial spaces." Acta Acustica 6 (2022): 15. http://dx.doi.org/10.1051/aacus/2022014.
Full textAbstract:
Indoor acoustic environment has become a critical factor in architectural design, and some researchers argued that the reactions from people of varied age, gender, etc. to indoor noise should be considered. While the office staff along metro lines get used to frequent metro noise, their metro noise perceptions, which are supposed to be different from non-office staff, need to be clearly examined. Based on on-site physical measurements and questionnaire surveys, this study aims to analyze the multi-dimensional perceptions (annoyance, dissatisfaction and unpleasantness) of office staff and non-office staff about metro noise in the underground commercial spaces of a high-rise building. The results indicate that due to lower adaptability and tolerance to metro noise, the non-office staff were more sensitive to the change of metro noise than the office staff, and compared with the office staff, the non-office staff expressed obviously more intense multi-dimensional negative moods under the same metro noise environments. Furthermore, for the non-office staff, their annoyance and dissatisfaction ratings due to metro noise correlated well with A-weighted equivalent sound pressure level (LAeq) and maximum A sound pressure level (LAFmax). Among the psychoacoustic measures, loudness and sharpness mainly influenced their annoyance and dissatisfaction perceptions.
17
Herrmann, Sven, and Mathias Dietz. "Model-based selection of most informative diagnostic tests and test parameters." Acta Acustica 5 (2021): 51. http://dx.doi.org/10.1051/aacus/2021043.
Full textAbstract:
Given the complexity of most brain and body processes, it is often not possible to relate experimental data from an individual to the underlying subject-specific physiology or pathology. Computer simulations of these processes have been suggested to assist in establishing such a relation. However, the aforementioned complexity and required simulation accuracy impose considerable challenges. To date, the best-case scenario is varying the model parameters to fit previously recorded experimental data. Confidence intervals can be given in the units of the data, but usually not for the model parameters that are the ultimate interest of the diagnosis. We propose a likelihood-based fitting procedure, operating in the model-parameter space and providing confidence intervals for the parameters under diagnosis. The procedure is capable of running parallel to the measurement, and can adaptively set test parameters to the values that are expected to provide the most diagnostic information. Using the pre-defined acceptable confidence interval, the experiment continues until the goal is reached. As an example, the approach was tested with a simplistic three-parameter auditory model and a psychoacoustic binaural tone in a noise-detection experiment. For a given number of trials, the model-based measurement steering provided 80% more information.
18
McGrew, Kathleen A., Sarah E. Crowell, Jonathan L. Fiely, Alicia M. Berlin, Glenn H. Olsen, Jennifer James, Heather Hopkins, and Christopher K. Williams. "Underwater hearing in sea ducks with applications for reducing gillnet bycatch through acoustic deterrence." Journal of Experimental Biology 225, no. 20 (October 15, 2022). http://dx.doi.org/10.1242/jeb.243953.
Full textAbstract:
ABSTRACT As diving foragers, sea ducks are vulnerable to underwater anthropogenic activity, including ships, underwater construction, seismic surveys and gillnet fisheries. Bycatch in gillnets is a contributing source of mortality for sea ducks, killing hundreds of thousands of individuals annually. We researched underwater hearing in sea duck species to increase knowledge of underwater avian acoustic sensitivity and to assist with possible development of gillnet bycatch mitigation strategies that include auditory deterrent devices. We used both psychoacoustic and electrophysiological techniques to investigate underwater duck hearing in several species including the long-tailed duck (Clangula hyemalis), surf scoter (Melanitta perspicillata) and common eider (Somateria mollissima). Psychoacoustic results demonstrated that all species tested share a common range of maximum auditory sensitivity of 1.0–3.0 kHz, with the long-tailed ducks and common eiders at the high end of that range (2.96 kHz), and surf scoters at the low end (1.0 kHz). In addition, our electrophysiological results from 4 surf scoters and 2 long-tailed ducks, while only tested at 0.5, 1 and 2 kHz, generally agree with the audiogram shape from our psychoacoustic testing. The results from this study are applicable to the development of effective acoustic deterrent devices or pingers in the 2–3 kHz range to deter sea ducks from anthropogenic threats.
19
Simões, Pierangela Nota, Debora Lüders, Maria Renata José, Guilherme Romanelli, Valéria Lüders, Rosane Sampaio Santos, and Cristiano Miranda de Araújo. "Musical Perception Assessment of People With Hearing Impairment: A Systematic Review and Meta-Analysis." American Journal of Audiology, March 30, 2021, 1–16. http://dx.doi.org/10.1044/2021_aja-20-00146.
Full textAbstract:
Purpose People with hearing impairment (HI) face numerous challenges that can be minimized with the use of hearing aids and cochlear implants. Despite technological advances in these assistive hearing devices, musical perception remains difficult for these people. Tests and protocols developed to assess the musical perception of this audience were the target of this systematic review, whose objective was to investigate how assessments of musical perception in people with HI are carried out. Method Searches for primary articles were carried out in the PubMed/MEDLINE, Scopus, Web of Science, Latin American and Caribbean Health Sciences Literature, and ASHAWire databases. Search results were managed using EndNote X9 software, and analysis was performed according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) Statement. Results The 16 cross-sectional included studies analyzed music perception data from people with HI compared to a control group of participants with normal hearing. Among these, four studies were selected to be included in a meta-analysis, performed with timbre and melody. Variability was observed in the tests and between the levels of auditory perception skills analyzed in relation to the components of music. With respect to the tests, sound stimuli generated by synthesizers were the most used stimuli; with the exception of timbre evaluation, the most frequent test environment was a booth with sound attenuation, and the average intensity for presenting sound stimuli was 70 dB SPL. The most evaluated sound component was pitch, followed by rhythm and timbre, with a pattern of responses based on adaptive and psychoacoustic methods. Conclusions The heterogeneity of the musical parameters and the auditory abilities evaluated by the tests is a fact that can compromise evidence found in this area of study. It is worth considering the quality of samples that were recorded with real musical instruments and digitized afterward, in comparison with synthesized samples that do not seem to accurately represent real instruments. The need to minimize semantic parallelism that involves the auditory skills and elements of music involved in the assessment of musical perception is highlighted.
20
"The psychophysics of concurrent sound segregation." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 336, no. 1278 (June 29, 1992): 347–55. http://dx.doi.org/10.1098/rstb.1992.0068.
Full textAbstract:
To perceptually separate concurrent complex sounds, normally hearing listeners simultaneously combine information across a wide range of frequency components. Three psychoacoustical experiments are described which investigate different forms of this across-frequency processing. The first two experiments investigate the role of coherence of frequency modulation (FM) between widely separated frequency components of a complex sound.
21
Smalt, Christopher J., Jenna A. Sugai, Elouise A. Koops, Kelly N. Jahn, Kenneth E. Hancock, and Daniel B. Polley. "Automatic identification of tinnitus malingering based on overt and covert behavioral responses during psychoacoustic testing." npj Digital Medicine 5, no. 1 (August 29, 2022). http://dx.doi.org/10.1038/s41746-022-00675-w.
Full textAbstract:
AbstractTinnitus, or ringing in the ears, is a prevalent condition that imposes a substantial health and financial burden on the patient and to society. The diagnosis of tinnitus, like pain, relies on patient self-report, which can complicate the distinction between actual and fraudulent claims. Here, we combined tablet-based self-directed hearing assessments with neural network classifiers to automatically differentiate participants with tinnitus (N = 24) from a malingering cohort, who were instructed to feign an imagined tinnitus percept (N = 28). We identified clear differences between the groups, both in their overt reporting of tinnitus features, but also covert differences in their fingertip movement trajectories on the tablet surface as they performed the reporting assay. Using only 10 min of data, we achieved 81% accuracy classifying patients and malingerers (ROC AUC = 0.88) with leave-one-out cross validation. Quantitative, automated measurements of tinnitus salience could improve clinical outcome assays and more accurately determine tinnitus incidence.