Pub Date : 2025-09-09DOI: 10.1134/S1063771024601900
V. V. Bezotvetnykh, A. A. Golov, A. A. Tagiltsev, Yu. N. Morgunov
The article is devoted to determining the optimal parameters of sounding signals of a hydroacoustic system for monitoring temperature regimes of seawater areas on a thousand-kilometer scale. The results of modeling the noise immunity of complex signals of various durations and resolutions are presented. The results of modeling and full-scale tests on a 1073-km-long acoustic path in the Sea of Japan are presented. The influence of the waveguide impulse response on the noise immunity of signals with different resolutions is shown. Preferred sequences of sounding signals have been determined.
{"title":"On the Criteria for Selecting the Parameters of Sounding Signals for a Hydroacoustic System for Temperature Monitoring of Water Areas of the Sea of Japan","authors":"V. V. Bezotvetnykh, A. A. Golov, A. A. Tagiltsev, Yu. N. Morgunov","doi":"10.1134/S1063771024601900","DOIUrl":"10.1134/S1063771024601900","url":null,"abstract":"<div><p>The article is devoted to determining the optimal parameters of sounding signals of a hydroacoustic system for monitoring temperature regimes of seawater areas on a thousand-kilometer scale. The results of modeling the noise immunity of complex signals of various durations and resolutions are presented. The results of modeling and full-scale tests on a 1073-km-long acoustic path in the Sea of Japan are presented. The influence of the waveguide impulse response on the noise immunity of signals with different resolutions is shown. Preferred sequences of sounding signals have been determined.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"392 - 400"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771024603200
A. S. Koigerov, V. R. Reut
The results of the development of high-quality resonators based on surface transverse waves (STW) are reported. It is shown that the use of contemporary computational packages (COMSOL Multiphysics), as well as the improvement and development of already known calculation methods (modified model of coupled modes), make it possible to efficiently and quickly perform the calculation of STW devices. The results of comparing the theoretical and experimental characteristics of the transmission coefficient of a two-port STW resonator are presented. It is demonstrated that, using optical lithography, it is possible to manufacture high-quality resonators at frequencies of 0.5–2.5 GHz. Typical values for the unloaded Q-factor of 500-MHz resonators are 27 000–29 000. The results of measurements for a two-port STW resonator included into a 500-MHz low-noise self-oscillator model are reported to demonstrate phase noise at a level of –148.7 and –183.5 dBn/Hz at an offset of 1 kHz and 1 MHz, respectively, from the carrier frequency and a jitter of 2.8 fs. The self-oscillators based on STW resonators with a low level of phase noise and a small jitter can be demanded in the areas where it is critically necessary to provide a maximum dynamic range of digital signal processing ducts.
{"title":"High-Quality STW Resonators: Calculation Methods and Application in Self-Oscillators","authors":"A. S. Koigerov, V. R. Reut","doi":"10.1134/S1063771024603200","DOIUrl":"10.1134/S1063771024603200","url":null,"abstract":"<p>The results of the development of high-quality resonators based on surface transverse waves (STW) are reported. It is shown that the use of contemporary computational packages (COMSOL Multiphysics), as well as the improvement and development of already known calculation methods (modified model of coupled modes), make it possible to efficiently and quickly perform the calculation of STW devices. The results of comparing the theoretical and experimental characteristics of the transmission coefficient of a two-port STW resonator are presented. It is demonstrated that, using optical lithography, it is possible to manufacture high-quality resonators at frequencies of 0.5–2.5 GHz. Typical values for the unloaded Q-factor of 500-MHz resonators are 27 000–29 000. The results of measurements for a two-port STW resonator included into a 500-MHz low-noise self-oscillator model are reported to demonstrate phase noise at a level of –148.7 and –183.5 dBn/Hz at an offset of 1 kHz and 1 MHz, respectively, from the carrier frequency and a jitter of 2.8 fs. The self-oscillators based on STW resonators with a low level of phase noise and a small jitter can be demanded in the areas where it is critically necessary to provide a maximum dynamic range of digital signal processing ducts.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"357 - 367"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063771024603200.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771024602541
V. F. Kopiev, P. N. Kazanskii, V. A. Kopiev, I. A. Moralev, I. V. Pankratov
An experimental study of the effect of high-frequency surface barrier discharge plasma actuators on flow-induced cavity tonal noise has been carried out. Tonal noise reduction in the far field is demonstrated using two approaches: excitation of artificial waves corresponding to high-frequency modes and flow stabilization using a plasma actuator in a feedback loop. It is shown that the stabilizing feedback loop makes it possible to significantly ( up to 10 dB) suppress the fundamental tone without excitation of higher-frequency oscillations. It is shown that these plasma actuators can reduce flow cavity noise within the range of velocities (up to 60 m/s) typical of aircraft landing approach
{"title":"Active Control of Flow-Induced Cavity Noise Using a Plasma Actuator","authors":"V. F. Kopiev, P. N. Kazanskii, V. A. Kopiev, I. A. Moralev, I. V. Pankratov","doi":"10.1134/S1063771024602541","DOIUrl":"10.1134/S1063771024602541","url":null,"abstract":"<div><p>An experimental study of the effect of high-frequency surface barrier discharge plasma actuators on flow-induced cavity tonal noise has been carried out. Tonal noise reduction in the far field is demonstrated using two approaches: excitation of artificial waves corresponding to high-frequency modes and flow stabilization using a plasma actuator in a feedback loop. It is shown that the stabilizing feedback loop makes it possible to significantly ( up to 10 dB) suppress the fundamental tone without excitation of higher-frequency oscillations. It is shown that these plasma actuators can reduce flow cavity noise within the range of velocities (up to 60 m/s) typical of aircraft landing approach</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"434 - 441"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771024601973
V. I. Erofeev, E. E. Lisenkova
The article considers a self-consistent problem on the dynamic behavior of a deformable system consisting of a two-dimensional elastic guide (subsystem 1) and a one-dimensional elastic object moving continuously along it (subsystem 2). Local and global energy and wave momentum change laws are presented for the case when the Lagrangians of the contacting subsystems depend on generalized coordinates and their derivatives lower than the second order with respect to all the spatiotemporal variables. The conditions of radiation in the considered class of systems are discussed. A comparative analysis of both dispersion and energy characteristics of bending waves propagating in plates is carried out for two different models. The critical velocities of a constant load moving along these plates are found. The dependence of critical velocities on the rigidity coefficient of an elastic base and the physicomechanical properties of a plate is established. The principal possibility of converting the energy of two-dimensional elastic guide oscillations into the energy of the translational motion of a one-dimensional object is demonstrated. The wave pressure force expressed in a universal form through the two-dimensional system Lagrangian acts as a mediator of such conversion. The dependence of the coefficient of wave energy conversion into the energy of the translational motion of an absolutely rigid fastening on its motion velocity and two-dimensional system parameters is constructed.
{"title":"Energy and Momentum Change Laws for Two-Dimensional Elastic Systems with Moving Objects","authors":"V. I. Erofeev, E. E. Lisenkova","doi":"10.1134/S1063771024601973","DOIUrl":"10.1134/S1063771024601973","url":null,"abstract":"<p>The article considers a self-consistent problem on the dynamic behavior of a deformable system consisting of a two-dimensional elastic guide (subsystem 1) and a one-dimensional elastic object moving continuously along it (subsystem 2). Local and global energy and wave momentum change laws are presented for the case when the Lagrangians of the contacting subsystems depend on generalized coordinates and their derivatives lower than the second order with respect to all the spatiotemporal variables. The conditions of radiation in the considered class of systems are discussed. A comparative analysis of both dispersion and energy characteristics of bending waves propagating in plates is carried out for two different models. The critical velocities of a constant load moving along these plates are found. The dependence of critical velocities on the rigidity coefficient of an elastic base and the physicomechanical properties of a plate is established. The principal possibility of converting the energy of two-dimensional elastic guide oscillations into the energy of the translational motion of a one-dimensional object is demonstrated. The wave pressure force expressed in a universal form through the two-dimensional system Lagrangian acts as a mediator of such conversion. The dependence of the coefficient of wave energy conversion into the energy of the translational motion of an absolutely rigid fastening on its motion velocity and two-dimensional system parameters is constructed.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"301 - 311"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771024602474
Li Yicen, Li Rongguang, Sun Ling, Chen Sixun, Cheng Zhiqiang
This study derives the relationship between ultrasonic velocity and stress in orthogonal fiber-reinforced composites under biaxial stress conditions. By calibrating the stress coefficients in two directions, the stress values in the composite plate can be obtained using two time-of-flight measurements. The calibration of stress coefficients requires determining the first critical incident angle. Thus, micromechanics methods were used to calculate the stiffness matrix of the composite material, which was then input into a finite element model to simulate the ultrasonic velocity in the orthogonal composite material. This process determined the incident angle capable of exciting the critical refracted longitudinal wave, namely the first critical incident angle. Rectangular specimens of orthogonal composites were manufactured from glass fiber-reinforced composite plates with bidirectional layup, and uniaxial tensile tests were conducted to verify the accuracy of the first critical incident angle and to calibrate the stress coefficients. It was found that the normal stress in the fiber direction results in a decrease in the ultrasonic velocity in both the fiber and perpendicular directions. To verify the accuracy of ultrasonic stress measurement, uniaxial tensile specimens with a central hexagonal area under biaxial stress conditions and standard biaxial tensile specimens were specially designed. The experimental results for both specimens showed that the ultrasonic stress measurement results were in good agreement with the stress measured using strain gauges, confirming the accuracy and practicality of the ultrasonic stress measurement method.
{"title":"Stress Measurement of Orthogonal Fiber-Reinforced Composites under Biaxial Stress Conditions Based on Critically Refracted Longitudinal Wave Method","authors":"Li Yicen, Li Rongguang, Sun Ling, Chen Sixun, Cheng Zhiqiang","doi":"10.1134/S1063771024602474","DOIUrl":"10.1134/S1063771024602474","url":null,"abstract":"<p>This study derives the relationship between ultrasonic velocity and stress in orthogonal fiber-reinforced composites under biaxial stress conditions. By calibrating the stress coefficients in two directions, the stress values in the composite plate can be obtained using two time-of-flight measurements. The calibration of stress coefficients requires determining the first critical incident angle. Thus, micromechanics methods were used to calculate the stiffness matrix of the composite material, which was then input into a finite element model to simulate the ultrasonic velocity in the orthogonal composite material. This process determined the incident angle capable of exciting the critical refracted longitudinal wave, namely the first critical incident angle. Rectangular specimens of orthogonal composites were manufactured from glass fiber-reinforced composite plates with bidirectional layup, and uniaxial tensile tests were conducted to verify the accuracy of the first critical incident angle and to calibrate the stress coefficients. It was found that the normal stress in the fiber direction results in a decrease in the ultrasonic velocity in both the fiber and perpendicular directions. To verify the accuracy of ultrasonic stress measurement, uniaxial tensile specimens with a central hexagonal area under biaxial stress conditions and standard biaxial tensile specimens were specially designed. The experimental results for both specimens showed that the ultrasonic stress measurement results were in good agreement with the stress measured using strain gauges, confirming the accuracy and practicality of the ultrasonic stress measurement method<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"368 - 377"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771024601857
O. P. Bychkov, M. A. Demyanov
The article presents the results of using a previously developed method for three-dimensional localization of acoustic sources based on data from asynchronous measurements with a multimicrophone array from various positions, adapted for dipole-type sources characteristic of airframe noise. The article consists of two parts. In the first, the developed method was verified using the example of localization of test dipole sources. Sources with different orientations of the dipole moment with respect to the edges of the microphone array are considered. Based on the results of localizing test sources, it is shown that a dihedral array, the faces of which are parallel to the dipole moment of the source, allows more accurate identification of a dipole source in three-dimensional space compared to the general case. In the second part, the method is used to construct three-dimensional noise-source localization maps of a small-scale high-lift wing model with imitation of extended landing gear, which has a complex structure of dipole sources with various amplitudes and directions. The obtained volumetric localization maps in various frequency bands were analyzed by comparing such localization with test cases, and the possibility of localizing sources in this case was shown.
{"title":"On the Possibility of Three-Dimensional Localization of Airframe Noise Sources Using Sequential Asynchronous Microphone Array Measurements","authors":"O. P. Bychkov, M. A. Demyanov","doi":"10.1134/S1063771024601857","DOIUrl":"10.1134/S1063771024601857","url":null,"abstract":"<div><p>The article presents the results of using a previously developed method for three-dimensional localization of acoustic sources based on data from asynchronous measurements with a multimicrophone array from various positions, adapted for dipole-type sources characteristic of airframe noise. The article consists of two parts. In the first, the developed method was verified using the example of localization of test dipole sources. Sources with different orientations of the dipole moment with respect to the edges of the microphone array are considered. Based on the results of localizing test sources, it is shown that a dihedral array, the faces of which are parallel to the dipole moment of the source, allows more accurate identification of a dipole source in three-dimensional space compared to the general case. In the second part, the method is used to construct three-dimensional noise-source localization maps of a small-scale high-lift wing model with imitation of extended landing gear, which has a complex structure of dipole sources with various amplitudes and directions. The obtained volumetric localization maps in various frequency bands were analyzed by comparing such localization with test cases, and the possibility of localizing sources in this case was shown.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"422 - 433"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771025600032
Bingqing Luan, Changjin Shao, Feiyu Liu, Zhenqing Yang
This paper investigates the feasibility of utilizing a closed four-branch resonant as a concentration sensor during the transportation of natural gas mixed with H2. Accurate detection of changes in H2 concentration is critical to ensuring pipeline operational safety, as an increase in H2 content can lead to delayed fractures or localized cracks within the pipeline. By carefully tuning the parameters of the four-branch closed resonator sensor, this study significantly improves its performance metrics. Specifically, the figure of merit reaches 4.93 × 105, the quality factor is 8.96 × 105, and the concentration detection limit is as low as 1.01 × 10–7. In addition, the device’s simple design and superior performance make it particularly suitable for applications in biosensing, air quality monitoring, and the detection of oxygen and harmful gases.
{"title":"Optimization of a H2 Blending Concentration Sensor in Natural Gas Utilizing a Four-Branch Closed Resonator","authors":"Bingqing Luan, Changjin Shao, Feiyu Liu, Zhenqing Yang","doi":"10.1134/S1063771025600032","DOIUrl":"10.1134/S1063771025600032","url":null,"abstract":"<p>This paper investigates the feasibility of utilizing a closed four-branch resonant as a concentration sensor during the transportation of natural gas mixed with H<sub>2</sub>. Accurate detection of changes in H<sub>2</sub> concentration is critical to ensuring pipeline operational safety, as an increase in H<sub>2</sub> content can lead to delayed fractures or localized cracks within the pipeline. By carefully tuning the parameters of the four-branch closed resonator sensor, this study significantly improves its performance metrics. Specifically, the figure of merit reaches 4.93 × 10<sup>5</sup>, the quality factor is 8.96 × 10<sup>5</sup>, and the concentration detection limit is as low as 1.01 × 10<sup>–7</sup>. In addition, the device’s simple design and superior performance make it particularly suitable for applications in biosensing, air quality monitoring, and the detection of oxygen and harmful gases<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"378 - 391"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S106377102560038X
D. D. Sidorov, V. G. Petnikov
The impact of seabed characteristics on the accuracy in determining the distance between a sound source and receiver located underwater was studied by numerical experiments. Experimental data on bottom parameters and the sound speed profile in the water layer in the (hydrological) summer and winter in the shallow-water part of the Kara Sea were used. In the latter case, the effect of ice cover was taken into account. It has been found that the main error in determining the distance in the 1–10 km interval is associated with the multimode (multiray) nature of the acoustic wave propagation in the sound channel between the water surface and bottom. It has been demonstrated that this error decreases to several meters in summer and with a waterlike bottom, when the sound speeds in the water layer and bottom are close to each other. It has been noted that horizontal refraction of acoustic waves caused by the transverse inhomogeneity of the bottom also leads to errors in determining distance, although to a lesser extent.
{"title":"Effect of Bottom Properties in Acoustic Distance Measurement on the Shallow-Water Arctic Shelf","authors":"D. D. Sidorov, V. G. Petnikov","doi":"10.1134/S106377102560038X","DOIUrl":"10.1134/S106377102560038X","url":null,"abstract":"<div><p>The impact of seabed characteristics on the accuracy in determining the distance between a sound source and receiver located underwater was studied by numerical experiments. Experimental data on bottom parameters and the sound speed profile in the water layer in the (hydrological) summer and winter in the shallow-water part of the Kara Sea were used. In the latter case, the effect of ice cover was taken into account. It has been found that the main error in determining the distance in the 1–10 km interval is associated with the multimode (multiray) nature of the acoustic wave propagation in the sound channel between the water surface and bottom. It has been demonstrated that this error decreases to several meters in summer and with a waterlike bottom, when the sound speeds in the water layer and bottom are close to each other. It has been noted that horizontal refraction of acoustic waves caused by the transverse inhomogeneity of the bottom also leads to errors in determining distance, although to a lesser extent.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"413 - 421"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771025600494
R. A. Zhostkov, D. A. Zharkov
The sensitivity of the amplitude on the surface of a surface acoustic wave (SAW) to a change in the elastic parameters of a layered half-space with a gradual change in its elastic parameters along the horizontal is considered. Cases of wave transition from a single-layer system to a single-layer system and from a multilayer to a multilayer system are analyzed with the example of a five-layer system with an independent change in the longitudinal and transverse wave velocities in the layers. It is shown that the properties of the reference medium affect the resulting frequency dependences of the relative amplitude. The sensitivity of the wave amplitude to local changes in the parameters in a multilayer system varies significantly depending on the frequency. In the case of a constant Poisson ratio, the mechanism of amplitude variation on the surface is demonstrated based on an analysis of the surface wave profile.
{"title":"Sensitivity of the Amplitude of a Rayleigh-Type Wave on a Surface to Changes in the Parameters of an Inhomogeneous Medium","authors":"R. A. Zhostkov, D. A. Zharkov","doi":"10.1134/S1063771025600494","DOIUrl":"10.1134/S1063771025600494","url":null,"abstract":"<div><p>The sensitivity of the amplitude on the surface of a surface acoustic wave (SAW) to a change in the elastic parameters of a layered half-space with a gradual change in its elastic parameters along the horizontal is considered. Cases of wave transition from a single-layer system to a single-layer system and from a multilayer to a multilayer system are analyzed with the example of a five-layer system with an independent change in the longitudinal and transverse wave velocities in the layers. It is shown that the properties of the reference medium affect the resulting frequency dependences of the relative amplitude. The sensitivity of the wave amplitude to local changes in the parameters in a multilayer system varies significantly depending on the frequency. In the case of a constant Poisson ratio, the mechanism of amplitude variation on the surface is demonstrated based on an analysis of the surface wave profile.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"442 - 452"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-09DOI: 10.1134/S1063771024602577
A. M. Lunichkin, I. G. Andreeva, L. G. Zaitseva, E. A. Ogorodnikova
The study tested the hypothesis that speech changes in noise (the Lombard effect) may have significant individual differences, including those due to the gender and age of the speakers. For this, the characteristics of Lombard speech were studied for 12 speakers (6 men, 6 women; age groups: 25–35 and 55–59 age). The study used recordings of speech consisting of disyllabic words with stressed vowel sounds [a], [i], [u] of Russian speech in silence and in multitalker noise at levels of 60 and 72 dB(A). Changes in the fundamental frequency (ΔF0) and intensity (ΔI) of the voice in noise compared to silence were determined. When comparing groups of men and women, significant differences in the change of F0 in noise of 60 dB are shown. Differences in vowel characteristics between the young and middle-aged speaker groups were found for ΔF0 and ΔI in 72 dB noise. Regardless of gender and age, two types of speakers were identified, differing in the ΔF0 and ΔI values at both noise levels. Type 1 speakers in multitalker noise increased F0 by 23 and 57 Hz, for levels of 60 and 72 dB, respectively, and type 2 speakers, by 16 and 23 Hz. At two levels of noise masking, the voice intensity of type 1 speakers increased by 8 and 16 dB; the voice intensity of type 2 speakers, by 6 and 10 dB. The obtained differences may be determined by the greater influence of voluntary control, with an increase in the noise level in type 2 speakers we have identified.
{"title":"Individual Differences in Auditory Feedback Control of Speech in Noise","authors":"A. M. Lunichkin, I. G. Andreeva, L. G. Zaitseva, E. A. Ogorodnikova","doi":"10.1134/S1063771024602577","DOIUrl":"10.1134/S1063771024602577","url":null,"abstract":"<div><p>The study tested the hypothesis that speech changes in noise (the Lombard effect) may have significant individual differences, including those due to the gender and age of the speakers. For this, the characteristics of Lombard speech were studied for 12 speakers (6 men, 6 women; age groups: 25–35 and 55–59 age). The study used recordings of speech consisting of disyllabic words with stressed vowel sounds [<i>a</i>], [<i>i</i>], [<i>u</i>] of Russian speech in silence and in multitalker noise at levels of 60 and 72 dB(A). Changes in the fundamental frequency (Δ<i>F</i>0) and intensity (Δ<i>I</i>) of the voice in noise compared to silence were determined. When comparing groups of men and women, significant differences in the change of <i>F</i>0 in noise of 60 dB are shown. Differences in vowel characteristics between the young and middle-aged speaker groups were found for Δ<i>F</i>0 and Δ<i>I</i> in 72 dB noise. Regardless of gender and age, two types of speakers were identified, differing in the Δ<i>F</i>0 and Δ<i>I</i> values at both noise levels. Type 1 speakers in multitalker noise increased <i>F</i>0 by 23 and 57 Hz, for levels of 60 and 72 dB, respectively, and type 2 speakers, by 16 and 23 Hz. At two levels of noise masking, the voice intensity of type 1 speakers increased by 8 and 16 dB; the voice intensity of type 2 speakers, by 6 and 10 dB. The obtained differences may be determined by the greater influence of voluntary control, with an increase in the noise level in type 2 speakers we have identified.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"467 - 478"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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