Relevant bibliographies by topics / Phase-frequency response

Academic literature on the topic 'Phase-frequency response'

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Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Phase-frequency response"

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Isaev, Alexander E., and Bulat I. Khatamtaev. "Determination of the hydrophone phase-frequency response by its amplitude-frequency response." Izmeritel`naya Tekhnika, no. 7 (2021): 48–53. http://dx.doi.org/10.32446/0368-1025it.2021-7-48-53.

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One of the tasks of the COOMET 786/RU/19 pilot comparisons is to check the correctness of the hydrophone model proposed in VNIIFTRI, consisting of an advance line and a minimum-phase part, including the effect of sound diffraction and resonance properties of the active element. This model makes it possible to use the Hilbert transform to obtain the phase-frequency response from the amplitude-frequency response as well as for inverse operation. The results of measuring experiments performed using facilities of the State Primary Standard GET 55-2017 are presented. For many practical tasks, it is not necessary to obtain the phase-frequency response for an acoustic center of the receiver. It is enough to determine the shape of the phase-frequency response using much less laborious methods. The question of which of the characteristics is expedient to determine during calibration - for an acoustic center, or for a point on the surface of an active element, deserves a discussion among specialists performing acoustic measurements.
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Isaev, A. E., and B. I. Khatamtaev. "Determination of the Hydrophone Phase-Frequency Response by its Amplitude-Frequency Response." Measurement Techniques 64, no. 7 (October 2021): 580–85. http://dx.doi.org/10.1007/s11018-021-01974-6.

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Polzin, Jason A., Richard Frayne, Thomas M. Grist, and Charles A. Mistretta. "Frequency response of multi-phase segmentedk-space phase-contrast." Magnetic Resonance in Medicine 35, no. 5 (May 1996): 755–62. http://dx.doi.org/10.1002/mrm.1910350517.

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Ganguly, Vasishta, and Tony L. Schmitz. "Phase correction for frequency response function measurements." Precision Engineering 38, no. 2 (April 2014): 409–13. http://dx.doi.org/10.1016/j.precisioneng.2013.12.007.

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Sato, Takuso, and Suksang Chang. "Frequency response of a micro-particle phase conjugator." Applied Optics 24, no. 17 (September 1, 1985): 2744. http://dx.doi.org/10.1364/ao.24.002744.

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Sarkar, B. C., M. Nandi, A. Hati, and S. Sarkar. "Noise response of tri-state phase frequency detector." Electronics Letters 33, no. 9 (1997): 744. http://dx.doi.org/10.1049/el:19970532.

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Van Dyke, Katlyn B., Rachel Lieberman, Alessandro Presacco, and Samira Anderson. "Development of Phase Locking and Frequency Representation in the Infant Frequency-Following Response." Journal of Speech, Language, and Hearing Research 60, no. 9 (September 18, 2017): 2740–51. http://dx.doi.org/10.1044/2017_jslhr-h-16-0263.

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Purpose This study investigates the development of phase locking and frequency representation in infants using the frequency-following response to consonant–vowel syllables. Method The frequency-following response was recorded in 56 infants and 15 young adults to 2 speech syllables (/ba/ and /ga/), which were presented in randomized order to the right ear. Signal-to-noise ratio and F sp analyses were used to verify that individual responses were present above the noise floor. Thirty-six and 39 infants met these criteria for the /ba/ or /ga/ syllables, respectively, and 31 infants met the criteria for both syllables. Data were analyzed to obtain measures of phase-locking strength and spectral magnitudes. Results Phase-locking strength to the fine structure in the consonant–vowel transition was higher in young adults than in infants, but phase locking was equivalent at the fundamental frequency between infants and adults. However, frequency representation of the fundamental frequency was higher in older infants than in either the younger infants or adults. Conclusion Although spectral amplitudes changed during the first year of life, no changes were found with respect to phase locking to the stimulus envelope. These findings demonstrate the feasibility of obtaining these measures of phase locking and fundamental pitch strength in infants as young as 2 months of age.
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Grzegorczyk, D. S., and G. Carta. "Frequency response of liquid-phase adsorption on polymeric adsorbents." Chemical Engineering Science 52, no. 10 (May 1997): 1589–608. http://dx.doi.org/10.1016/s0009-2509(96)00513-1.

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Yang, Changxi, Katuo Seta, and Yong Zhu. "Spatial-frequency response of photorefractive phase conjugators with Ce:BaTiO_3." Applied Optics 37, no. 2 (January 10, 1998): 352. http://dx.doi.org/10.1364/ao.37.000352.

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Unstead, P. A., and I. M. MacLeod. "Synthesis of continuous-time minimum-phase frequency response specifications." International Journal of Control 74, no. 6 (January 2001): 571–85. http://dx.doi.org/10.1080/00207170010017833.

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Dissertations / Theses on the topic "Phase-frequency response"

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Jordi, Robin Guy. "Batch frequency response techniques in gas phase adsorption applications /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16290.pdf.

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Edin, Hans. "Partial Discharges Studied with Variable Frequency of the Applied Voltage." Doctoral thesis, KTH, Elektrotekniska system, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3207.

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This thesis concerns partial discharge (PD) diagnostics withvariable frequency of applied voltage in the frequency range 1mHz - 400 Hz. The exploration of a new type of spectroscopythat combines partial discharge analysis and dielectricresponse is demonstrated. A question addressed is if and howthe PD activity varies with the frequency of the appliedvoltage. The nature of an existing frequency dependence couldbe useful in the classification of different defects and tojudge the degree of progressive ageing. A Variable-Frequency Phase Resolved Partial DischargeAnalysis (VF-PRPDA) technique is developed for the appliedvoltage frequency range 1 mHz - 400 Hz. The VF-PRPDA techniqueis combined with a system for high voltage dielectricspectroscopy that allows simultaneous measurements. TheVF-PRPDA technique is used for studying the frequencydependence of PD. The PD activity is for example measured byintegrated measures like total charge per cycle and totalnumber of discharges per cycle. Statistical measures like mean,standard deviation, skewness, kurtosis etc. are applied tomeasure the frequency dependence of the phasedistributions. High voltage dielectric spectroscopy is supplemented withharmonic analysis for studying non-linear dielectric responsecurrents. The VF-PRPDA technique is demonstrated on defined objectslike point-plane gaps and artificial voids, but also on aninsulated stator bar and a paper insulated cable. Surfacedischarges on insulating surfaces are studied in an environmentwith a controlled relative humidity and temperature. Theadsorption of moisture on the insulating surface alters thesurface conductivity of the surface and the frequencydependence of the PD activity. The influence of temperature upon the PD activity is studiedfor a oil paper insulated cable. The results of the measurements show that the partialdischarge activity in general is frequency dependent over thefrequency range 1 mHz - 400 Hz. The reasons behind thefrequency dependence are linked to surface- and bulk-conducting mechanisms, frequency dependent field distributionsand statistical effects of the supply of start electrons. An algorithm is developed that relates the phase resolved PDcurrent measured with the PRPDA technique to the non-linearcurrent measured with dielectric spectroscopy. The algorithm isexperimentally verified by simultaneous measurements of PRPDAand dielectric spectroscopy on defined objects. The resultsexplain the contribution of PD to the apparent capacitance andloss. Moreover, the harmonics of the fundamental currentcomponent yield information about, for example, polaritydependent discharge sources. Keywords:diagnostic methods, partial discharges, phaseresolved, variable frequency, dielectric spectroscopy,dielectric response, harmonics, insulation
QC 20100527
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Hord, Kyle A. "MODELING AND VALIDATION OF A SYNCHRONOUS-MACHINE/CONTROLLED-RECTIFIER SYSTEM." UKnowledge, 2014. http://uknowledge.uky.edu/ece_etds/42.

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The hardware validation of a novel average-value model (AVM) for the simulation of a synchronous-generator/controlled rectifier system is presented herein. The generator is characterized using genetic algorithm techniques to fit standstill frequency response (SSFR) measurements to q and d-axis equivalent circuits representing the generator in the rotor reference frame. The generator parameters form the basis of a detailed model of the system, from which algebraic functions defining the parametric AVM are derived. The average-value model is compared to the physical system for a variety of loading and operating conditions including step load change, change in delay angle, and external closed-loop control, validating the model accuracy for steady-state and transient operation.
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Шевчук, Богдан Михайлович, and Bohdan Shevchuk. "Вимірювач амплітудно-частотної характеристики чотириполюсника апаратно-програмний." Bachelor's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35557.

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В роботі проведено аналіз методів вимірювання амплітудно-частотної характеристики чотириполюсників. Розроблено схему електричну структурну вимірювача. Запропоновано канал комунікації з комп’ютером через порт. Управління роботою вимірювача здійснюється мікроконтролером. Розроблено схему електричну принципову та проведено розрахунки її каскадів. Технічні характеристики вимірювача: Діапазон робочих частот 0…50 МГц; Діапазон частот, обмежений чистотою спектру сигналу 0…33 МГц; Діапазон вимірюваного рівня сигналу в логарифмічному масштабі 0…-83дБ; Мінімальний крок переналаштування 1 Гц; Відношення сигнал/шум 105 дБ. Параметри вимірювача відповідають заявленим в технічному завданні.
The analysis of methods of measurement of amplitude-frequency characteristic of fourpoles is carried out in the work. The scheme of the electric structural meter is developed. A communication channel with a computer through the port is offered. The meter is controlled by a microcontroller. The electric circuit diagram is developed and calculations of its cascades are carried out. Technical characteristics of the meter: Operating frequency range 0… 50 MHz; Frequency range limited by the purity of the signal spectrum 0… 33 MHz; The range of the measured signal level on a logarithmic scale 0… -83dB; Minimum reconfiguration step 1 Hz; The signal-to-noise ratio is 105 dB. The parameters of the meter correspond to those stated in the technical task.
Вступ 8 1 Основна частина 9 1.1 Аналіз технічного завдання 9 1.2 Проектування схемотехнічне 10 1.3 Розробка і розрахунок структурної схеми 10 1.4 Розрахунок схеми електричної принципов 11 1.5 Проектування програмне 37 1.6 Розробка алгоритму роботи мікроконтролера 37 1.7 Вибір і обґрунтування елементної бази 40 1.8 Розробка компоновки і конструкції друкованого вузла 42 2 Безпека життєдіяльності, основи охорони праці 44 2.1 Моделі безпеки життєдіяльності 44 2.2 Джерела електромагнітного випромінювання 46 Висновки 51 Список використаних джерел 52 Додатки 53
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Cheng, Holden. "Phase anomalies and plateaus in auditory nerve fiber responses to high-frequency tones." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/34114.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.
Includes bibliographical references (leaves 39-40).
Phase reversals and phase plateaus have been found in studies that measure motion of the basilar membrane (BM) at the base of the cochlea in response to high-level sounds above the characteristic frequency (CF). In contrast, such patterns have not been found in responses of auditory-nerve fibers (ANF) from the base of the cochlea, primarily because these ANFs do not have synchronized responses to high-frequency tones. We sought counterparts to the BM responses in auditory nerve fibers (ANF) by using a new method that extracts phase information from beat-producing multi-tone stimuli. The method can determine the relative phases of ANF responses to high-frequency tones by measuring the phases of low-frequency beats and from these beats, reconstructing the relative phases of the original tone response. We also used amplitude modulated (AM) tones at high sound levels. The data collected suggest that the new beat-producing phase-analysis method is effective at tip and tail regions of the ANF tuning curves. However, this method has low success in measurements at frequencies above CF due to low signal-to-noise ratios and large distortion products in the ANF responses. AM tones, however, were more successful and showed significant evidence of a phase plateau at high levels and at frequencies well above the fiber's CF.
(cont.) Thus this plateau response appears to be present in ANF firings as well as BM motion. ANF responses to multi-tone stimuli presented above CF and at moderate level resulted in an anomalous negative group delay. Presuming that the multi-tone method yields a valid picture of the original high frequency phase responses we speculate that the anomaly is produced by complex interactions among two or more response components at the above-CF region of the ANF tuning curve.
by Holden Cheng.
S.M.
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Slavíček, Ondřej. "Dynamické charakteristiky běžně používaných snímačů tlaku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254445.

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This thesis deals with the dynamic properties of electric pressure transducers. These are properties that are reflected in the measurement of rapid, time-dependent processes. They could be described in two ways. Either by using amplitude and phase frequency response characteristics, or just one particular value. Natural frequency, cutoff frequency or time constant. These parameters indicate the extreme values for the use of measuring devices in the measurement of time-dependent processes. In this work will be described procedures for determining these parameters.
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Підгурська, Тетяна Вікторівна. "Двосмугові фільтри на діелектричних резонаторах з вищими типами коливань." Doctoral thesis, Київ, 2016. https://ela.kpi.ua/handle/123456789/15382.

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У роботі досліджена актуальна задача проектування двосмугових фільтрів на діелектричних резонаторах з вищими типами коливань, що полягає в розробці математичних моделей та нових конструкцій, що забезпечують необхідні електричні параметри за мінімальної кількості елементів зв’язку. Запропоновано використання вищого робочого типу коливання ДР з більш високою добротністю разом із нижчим для побудови двосмугового фільтра; спосіб побудови двосмугових фільтрів на прямокутних ДР, який відрізняється тим, що за рахунок використання видовжених форм ДР з робочими коливаннями TE11δ та TE12δ дозволяє забезпечити приблизно однакові коефіцієнти зв’язку в обох робочих смугах пропускання; спрощений спосіб розрахунку коефіцієнтів зв’язку ДР на основі напруженості магнітного поля; отримано нові аналітичні вирази для розрахунку коефіцієнта взаємного зв'язку між резонаторами; розроблені математичні моделі двосмугових багаторезонаторних фільтрів на «дипольному» та «квадрупольному» типах коливань прямокутних ДР; запропоновано нові конструкції двосмугових багаторезонаторних фільтрів, які відрізняються тим, що мають мінімальну кількість елементів зв'язку.
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Sripakagorn, Paiboon. "Frequency and phase response of a resonantly-coupled alpha Stirling cooler." Thesis, 1997. http://hdl.handle.net/1957/34518.

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A resonantly-coupled ��-Stirling (RCAS) cooler was designed and constructed. Tests on air and helium were performed with constant driving displacement over a range of frequencies. The effects of changing driving amplitude and charged pressure were studied. The use of stainless steel bellows in place of pistons eliminated the problem of piston seals and relaxed the construction tolerances. The fatigue life of the bellow is, however, a problem. The experimental optimization based on Taguchi methods was performed on regenerator mass, regenerator wire diameter, vibrating mass, and damping coefficient. Driven by a voice coil actuator, the characteristic phase shift of the Stirling cycle cooler was demonstrated where the hot-end displacement led the cold-end displacement. The 90�� phase shift was selected as the natural frequency. The pressure-volume diagrams for each working space were plotted and the indicated powers were determined. The compression powers in the hot and cold-ends show maximum values near the natural frequency. The mechanisms are different. At the hot-end where the displacement was kept constant, operation near the natural frequency gave a maximum pressure ratio and also maximized the compression power. The phase shifts in the cold-end were, however, relatively constant. The maximum pressure ratio and amplitude gave the maximum expansion power near the natural frequency. The expansion powers in the cold-end as indicators of cooling potential were approximately 2-4 watts for the air case, and 3-7 watts for the helium case. In both air and helium tests, the value of the parasitic losses reached 12 watts. The temperature difference developed across the regenerator is considered an indication of the cooling capacity. Good correlations were found between the indicated cooling capacity in the expansion space and the temperature difference. For a given size of cooler, the use of helium offered higher cooling capacity due to smaller pressure drop loss and smaller amplitude ratio. Higher cooling performance was also attained from helium at elevated pressures.
Graduation date: 1998
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蕭天岳. "A Study of Transient Response and Phase Noise of PLL Frequency Synthesizer." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/10758407112898307009.

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Wu, Kai-Di. "Joint Estimation of I/Q Imbalance, Carrier Frequency offset, Phase Noise, and Channel Response for Broadband Communication Systems." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2107200812000700.

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Books on the topic "Phase-frequency response"

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Tripathi, Ajay. Fast response three phase fixed frequency static power supply. 1995.

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Sripakagorn, Paiboon. Frequency and phase response of a resonantly-coupled alpha Stirling cooler. 1997.

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Pfurtscheller, Gert, and Fernando Lopes da Silva. EEG Event-Related Desynchronization and Event-Related Synchronization. Edited by Donald L. Schomer and Fernando H. Lopes da Silva. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190228484.003.0040.

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Event-related desynchronization (ERD) reflects a decrease of oscillatory activity related to internally or externally paced events. The increase of rhythmic activity is called event-related synchronization (ERS). They represent dynamical states of thalamocortical networks associated with cortical information-processing changes. This chapter discusses differences between ERD/ERS and evoked response potentials and methodologies for quantifying ERD/ERS and selecting frequency bands. It covers the interpretation of ERD/ERS in the alpha and beta bands and theta ERS and alpha ERD in behavioral tasks. ERD/ERS in scalp and subdural recordings, in various frequency bands, is discussed. Also presented is the modulation of alpha and beta rhythms by 0.1-Hz oscillations in the resting state and phase-coupling of the latter with slow changes of prefrontal hemodynamic signals (HbO2), blood pressure oscillations, and heart rate interval variations in the resting state and in relation to behavioral motor tasks. Potential uses of ERD-based strategies in stroke patients are discussed.
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Book chapters on the topic "Phase-frequency response"

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Silvester, Peter. "Frequency and Phase Response Plotting." In Electric Circuits, 293–356. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-10540-3_6.

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Fink, Christian G., Victoria Booth, and Michal Zochowski. "Effects of the Frequency Dependence of Phase Response Curves on Network Synchronization." In Phase Response Curves in Neuroscience, 475–87. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0739-3_19.

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Narins, Peter M., and Otto Gleich. "Phase Response of Low-Frequency Cochlear Ganglion Cells in the Starling." In Auditory Frequency Selectivity, 209–16. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2247-4_24.

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Zeberg, Hugo, Nathan W. Gouwens, Kunichika Tsumoto, Takashi Tateno, Kazuyuki Aihara, and Hugh P. C. Robinson. "Phase-Resetting Analysis of Gamma-Frequency Synchronization of Cortical Fast-Spiking Interneurons Using Synaptic-like Conductance Injection." In Phase Response Curves in Neuroscience, 489–509. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0739-3_20.

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Garrett, Steven L. "Attenuation of Sound." In Understanding Acoustics, 673–98. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_14.

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Abstract We will capitalize on our understanding of thermoviscous loss to develop an understanding of the attenuation of sound waves in fluids that are not influenced by proximity to solid surfaces. Such dissipation mechanisms are particularly important at very high frequencies and short distances (for ultrasound) or very low frequencies over geological distances (for infrasound). The Standard Linear Model of viscoelasticity introduced the nondimensional frequency, ωτR, that controlled the medium’s elastic (in-phase) and dissipative (quadrature) responses. Those response curves were “universal” in the sense that causality linked the elastic and dissipative responses through the Kramers-Kronig relations. That relaxation-time perspective is essential for attenuation of sound in media that can be characterized by one or more relaxation times related to those internal degrees of freedom that make their equation of state a function of frequency. Examples of these relaxation-time effects include the rate of collisions between different molecular species in a gas (e.g., nitrogen and water vapor in air), the pressure dependence of ionic association-dissociation of dissolved salts in sea water (e.g., MgSO4 and H3BO3), and evaporation-condensation effects when a fluid is oscillating about equilibrium with its vapor (e.g., fog droplets in air or gas bubbles in liquids).
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Solomentsev, K. Yu, V. I. Lachin, D. A. Plotnikov, V. E. Chumakov, A. E. Titov, A. A. Khovpachev, I. G. Balaban, and E. V. Shilin. "Compensation Method for Calculating the Amplitude and Phase of Sine Signals and Its Practical Applications in Measuring of Frequency Response of Analog Devices." In Informatics and Cybernetics in Intelligent Systems, 508–18. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77448-6_50.

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Stephens, Donald R. "Stability and Frequency Response of Digital Loops." In Phase-Locked Loops for Wireless Communications, 215–37. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5717-3_8.

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Hazzard, Kaden Richard Alan. "Radio-Frequency Spectra at Finite Temperature, Fluctuation-Response Relations, and Proposed Applications." In Quantum Phase Transitions in Cold Atoms and Low Temperature Solids, 63–84. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-8179-0_6.

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Müller, Florian, Gaëtan Abeloos, Erhan Ferhatoglu, Maren Scheel, Matthew R. W. Brake, Paolo Tiso, Ludovic Renson, and Malte Krack. "Comparison Between Control-Based Continuation and Phase-Locked Loop Methods for the Identification of Backbone Curves and Nonlinear Frequency Responses." In Nonlinear Structures & Systems, Volume 1, 75–78. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47626-7_11.

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Milic, Ljiljana. "Frequency-Reponse Masking Techniques." In Multirate Filtering for Digital Signal Processing, 295–315. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-178-0.ch010.

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The initial concept of the frequency-response masking technique was introduced by Neuvo, Cheng-Yu and Mitra (1984). It was shown that the complexity of a linear phase FIR filter can be considerably reduced by using the cascade connection of an interpolated FIR (IFIR) filter and a properly designed FIR filter. The IFIR filter transfer function is obtained by replacing the unit delay z-1 with the delay block z-M, where M is an integer. In this way, the frequency response of the IFIR filter is made periodic. The FIR filter in the cascade is used to eliminate (mask) the images from the IFIR filter frequency response. Two years later, Lim (1986) proposed a complete approach for the application of frequency-response masking technique in designing narrow-band and arbitrary-band linear phase FIR filters. It was shown that the approach given in (Lim, 1986) results in a linear phase FIR filter with a small fraction of nonzero coefficients, and thus is suitable for implementing sharp filters with arbitrary bandwidths. The arithmetic complexity is considerably smaller in comparison with the arithmetic complexity of an optimal FIR filter having the equivalent frequency response. This approach is applied later to IIR filters by Johansson and Wanhammar (1997, 2000). The overall filter is composed of an IIR periodic model filter and its complementary periodic filter, and FIR linearphase masking filters. In this way, the arbitrary-band filter can be designed. For a narrowband filter, the cascade of a periodic filter and masking filter can be used. The frequency-response masking approach is suitable for digital filters with sharp transition bands. Compared to the classical single-filter design, this technique offers the advantage of lower coefficients’ sensitivity, higher computation speed and lower power consumption. Recently, the application of frequency-response masking approach has been extended to filter banks to achieve a sharp band-separation with reduced computational complexity (Furtado, Diniz, Netto, and Saramäki, T. 2005; Rosenbaum, Lövenborg, and Johansson, 2007). In this chapter, we review the frequency-response masking techniques for narrow-band and arbitrary bandwidth IIR filters. We demonstrate through examples that very selective characteristics can be obtained using relatively low-order sub-filters. In this way, stable, low-sensitive filters are obtained.
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Conference papers on the topic "Phase-frequency response"

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Rodrigues, J. X., and K. R. Pai. "Modified linear phase frequency response masking FIR filter." In Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis. IEEE, 2005. http://dx.doi.org/10.1109/ispa.2005.195451.

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Ukhina, Hanna, Ivan Afanasyev, Valerii Sytnikov, Oleg Streltsov, and Pavel Stupen. "The Phase-Frequency Response Influence on the Tunable Frequency-Dependent Component Coefficients." In 2020 IEEE 5th International Symposium on Smart and Wireless Systems within the Conferences on Intelligent Data Acquisition and Advanced Computing Systems (IDAACS-SWS). IEEE, 2020. http://dx.doi.org/10.1109/idaacs-sws50031.2020.9297065.

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Erro, Maria J., Alayn Loayssa, Santiago Tainta, Ruben Hernandez, David Benito, Maria J. Garde, and Miguel A. Muriel. "Phase Reconstruction for the Frequency Response Measurement of FBGs." In 2007 IEEE International Symposium on Intelligent Signal Processing. IEEE, 2007. http://dx.doi.org/10.1109/wisp.2007.4447596.

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Chaouche, Moustafa Sahnoune, Samir Moulahoum, and Hamza Houassine. "Three phase transformer modelling by frequency response analysis measurement." In 2017 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF). IEEE, 2017. http://dx.doi.org/10.1109/isef.2017.8090727.

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Huiqing, Pan, Zeng Hao, Qiu Duyu, Tian Shulin, and Ye Peng. "Optimal design of adjustable frequency response linear-phase filters." In 2013 IEEE 11th International Conference on Electronic Measurement & Instruments (ICEMI). IEEE, 2013. http://dx.doi.org/10.1109/icemi.2013.6743092.

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Cortés, Claudia L., and Neil Guerrero González. "Fast Deep Learning based Multicarrier Phase Response Estimation in Non-Flat Frequency Response Channels." In Signal Processing in Photonic Communications. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/sppcom.2020.spth2i.2.

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Lin, Ching Shun, and Yi Hen Chen. "Phase compensation for multichannel low-frequency response using minimax approximation." In 2012 International Conference on Audio, Language and Image Processing (ICALIP). IEEE, 2012. http://dx.doi.org/10.1109/icalip.2012.6376608.

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Gao, Zhishan, and Jinbang Chen. "Calibration of frequency response function for a phase-shifted interferometer." In International Topical Symposium on Advanced Optical Manufacturing and Testing Technology, edited by Li Yang, Harvey M. Pollicove, Qiming Xin, and James C. Wyant. SPIE, 2000. http://dx.doi.org/10.1117/12.402837.

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Sudarshanam, Venkatapura S., and Richard O. Claus. "Cylindrical PVF2 film based fiber optic phase modulator: phase-shift nonlinearity and frequency response." In Fibers '92, edited by Richard O. Claus and Robert S. Rogowski. SPIE, 1993. http://dx.doi.org/10.1117/12.141324.

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Liang, Xiaodong, Ahmed El-Kadri, John Stevens, and Rotimi Adedun. "Frequency response analysis for phase-shifting transformers in oil field facilities." In 2013 IEEE/IAS 49th Industrial & Commercial Power Systems Technical Conference (I&CPS). IEEE, 2013. http://dx.doi.org/10.1109/icps.2013.6547343.

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Reports on the topic "Phase-frequency response"

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Miller, N. W., M. Shao, S. Pajic, and R. D'Aquila. Western Wind and Solar Integration Study Phase 3 – Frequency Response and Transient Stability. Office of Scientific and Technical Information (OSTI), December 2014. http://dx.doi.org/10.2172/1167065.

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McKinney, Jason D., and John Diehl. Measurement of Chromatic Dispersion using the Baseband Radio-Frequency Response of a Phase-Modulated Analog Optical Link Employing a Reference Fiber. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada472284.

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Taucher, Jan, and Markus Schartau. Report on parameterizing seasonal response patterns in primary- and net community production to ocean alkalinization. OceanNETs, November 2021. http://dx.doi.org/10.3289/oceannets_d5.2.

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We applied a 1-D plankton ecosystem-biogeochemical model to assess the impacts of ocean alkalinity enhancement (OAE) on seasonal changes in biogeochemistry and plankton dynamics. Depending on deployment scenarios, OAE should theoretically have variable effects on pH and seawater pCO2, which might in turn affect (a) plankton growth conditions and (b) the efficiency of carbon dioxide removal (CDR) via OAE. Thus, a major focus of our work is how different magnitudes and temporal frequencies of OAE might affect seasonal response patterns of net primary productivity (NPP), ecosystem functioning and biogeochemical cycling. With our study we aimed at identifying a parameterization of how magnitude and frequency of OAE affect net growth rates, so that these effects could be employed for Earth System Modell applications. So far we learned that a meaningful response parameterization has to resolve positive and negative anomalies that covary with temporal shifts. As to the intricacy of the response patterns, the derivation of such parameterization is work in progress. However, our study readily provides valuable insights to how OAE can alter plankton dynamics and biogeochemistry. Our modelling study first focuses at a local site where time series data are available (European Station for Time series in the Ocean Canary Islands ESTOC), including measurements of pH, concentrations of total alkalinity, dissolved inorganic carbon (DIC), chlorophyll-a and dissolved inorganic nitrogen (DIN). These observational data were made available by Andres Cianca (personal communication, PLOCAN, Spain), Melchor Gonzalez and Magdalena Santana Casiano (personal communication, Universidad de Las Palmas de Gran Canaria). The choice of this location was underpinned by the fact that the first OAE mesocosm experiment was conducted on the Canary Island Gran Canaria, which will facilitate synthesizing our modelling approach with experimental findings. For our simulations at the ESTOC site in the Subtropical North Atlantic we found distinct, non-linear responses of NPP to different temporal modes of alkalinity deployment. In particular, phytoplankton bloom patterns displayed pronounced temporal phase shifts and changes in their amplitude. Notably, our simulations suggest that OAE can have a slightly stimulating effect on NPP, which is however variable, depending on the magnitude of OAE and the temporal mode of alkalinity addition. Furthermore, we find that increasing alkalinity perturbations can lead to a shift in phytoplankton community composition (towards coccolithophores), which even persists after OAE has stopped. In terms of CDR, we found that a decrease in efficiency with increasing magnitude of alkalinity addition, as well as substantial differences related to the timing of addition. Altogether, our results suggest that annual OAE during the right season (i.e. physical and biological conditions), could be a reasonable compromise in terms of logistical feasibility, efficiency of CDR and side-effects on marine biota. With respect to transferability to global models, the complex, non-linear responses of biological processes to OAE identified in our simulations do not allow for simple parameterizations that can easily adapted. Dedicated future work is required to transfer the observed responses at small spatiotemporal scales to the coarser resolution of global models.
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