Journal of the Acoustical Society of America最新文献_第10页

All we know about anechoic chambers. 我们只知道消声室。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034775

Michael Vorländer

引用次数: 0

A combined noise source model based on vertical coherence to quantify the proportions of two types of noise power. 基于垂直相干的组合噪声源模型，量化了两种噪声功率的比例。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034786

Xuefeng Liu, Qi Li, Rui Tang, Yilin Wang, Dajing Shang, Zhenxing Zhao

{"title":"A combined noise source model based on vertical coherence to quantify the proportions of two types of noise power.","authors":"Xuefeng Liu, Qi Li, Rui Tang, Yilin Wang, Dajing Shang, Zhenxing Zhao","doi":"10.1121/10.0034786","DOIUrl":"https://doi.org/10.1121/10.0034786","url":null,"abstract":"With the vigorous development of maritime trade, the frequency band from 100 to 1500 Hz of shallow-sea ambient noise is not only affected by surface wind-induced noise but also the contribution of ship noise. Shallow-sea ambient noise can be described by a linear combination of surface wind-induced noise sources and ship noise sources. By using the correspondence between the real part of the vertical coherence and vertical energy flux, this work establishes a combined noise source model based on vertical coherence. A 64-element vertical array is used to measure the ocean ambient noise 103 m deep in an area of the South China Sea. Two scenarios, one dominated by surface wind-induced noise and one dominated by wind-induced noise and ship noise, are selected for investigation. By comparing the theoretical and measured values, the accuracy of the model proposed in this paper and its ability to remove the ship noise reliably are verified. This approach can be used to quantify the proportion of ship noise power in shallow-sea low-frequency environments and evaluate the contributions of wind-induced noise and ship noise at different times.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 1","pages":"84-100"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142950631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Modeling dispersion of circumferential waves in underwater targets with spectral methods. 用光谱方法模拟水下目标中周波的色散。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034794

Jianwei Dong, Xiukun Li, Ge Yu

引用次数: 0

Typicality analysis on statistical shape model-based average head and its head-related transfer functions. 基于统计形状模型的平均头部及其头部相关传递函数的典型性分析。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034746

Yewei Wang, Guangzheng Yu

{"title":"Typicality analysis on statistical shape model-based average head and its head-related transfer functions.","authors":"Yewei Wang, Guangzheng Yu","doi":"10.1121/10.0034746","DOIUrl":"https://doi.org/10.1121/10.0034746","url":null,"abstract":"In acoustics, an artificial head generally comprises two pinnae and occasionally a torso, which are useful for recording binaural signals and acquiring head-related transfer functions (HRTFs). Currently, most artificial heads are designed based on the anthropometric parameters of specific populations. However, anthropometric parameters do not accurately express head surface shapes, and thus, typical HRTFs are difficult to generate. Thus, this study presents a statistical shape model-based average head of 100 Chinese adults and comprehensively presents its repeatable design process. Furthermore, to validate the representativeness of the statistical shape model-based average head in terms of the head surface shape features and acoustical characteristics, its anthropometric parameters are compared with those of the 100 subjects. Moreover, the representativeness of statistical shape model-based average head's HRTFs is verified through the typical HRTFs clustered from the entire HRTF database. Owing to the clear and concise design process, the proposed method can be easily applied and promoted to a new population.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 1","pages":"57-69"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142950692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

A low-frequency broadband ring transducer driven by the flextensional structure. 一种弯曲结构驱动的低频宽带环形换能器。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034843

Xuejian Xia, Yu Lan, Tianfang Zhou

{"title":"A low-frequency broadband ring transducer driven by the flextensional structure.","authors":"Xuejian Xia, Yu Lan, Tianfang Zhou","doi":"10.1121/10.0034843","DOIUrl":"https://doi.org/10.1121/10.0034843","url":null,"abstract":"The flextensional transducer (FT) is a typical low-frequency transmitting transducer that is capable of high-power operation due to its capacity for displacement amplification. This article uses the structural configuration of the class IV FT as the basis for designing a ring transducer, which is a circular structure comprising a multitude of class IV flextensional structures as well as circular acoustic radiation structures. The flextensional structure drives the circular acoustic radiation structure, which in turn generates sound waves at low frequencies. It concurrently enhances the intensity of the sound source. Moreover, the acoustic radiation structure is designed to operate with two resonances that can be coupled with each other to extend the bandwidth of the transducer. A finite element model of the low-frequency broadband ring transducer was developed, and its structural parameters were optimized to achieve the optimal bandwidth. The optimization of the transducer was followed by the fabrication of its prototype, which was then used to evaluate its underwater acoustic performance. The results of measurements showed that the proposed transducer could successfully couple two modes of vibrations to yield an in-band fluctuation of approximately 12 dB in the range of frequencies of 540 to 1580 Hz.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 1","pages":"203-214"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142983960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Direct utilisation of impulse response data in reduction index assessment without intermediate reverberation time estimation (L). 在减少指数评估中直接利用脉冲响应数据，而不需要估计中间混响时间(L)。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034867

Jens Forssén

引用次数: 0

Underwater sound propagation over a layered seabed with weak shear rigiditya). 具有弱剪切刚度的层状海床上的水声传播。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034864

Oleg A Godin

{"title":"Underwater sound propagation over a layered seabed with weak shear rigiditya).","authors":"Oleg A Godin","doi":"10.1121/10.0034864","DOIUrl":"https://doi.org/10.1121/10.0034864","url":null,"abstract":"The shear wave speed is often small compared to the compressional wave speed in the top part of the seabed, where acoustic normal modes penetrate. In sediments with weak but finite shear rigidity, the strongest conversion from compressional to shear waves occurs at interfaces within the sediment. Shear wave generation at such interfaces and interference within sediment layers lead to first-order perturbations in the normal mode phase speed and contributions to sound attenuation, which vary rapidly with frequency. Weak shear rigidity is shown to lead to unexpectedly strong mode group speed perturbations that retain finite magnitudes for very small shear speeds in range-independent waveguides. Variation of the waveguide parameters with range affects shear-induced attenuation and mode travel time perturbations in a different manner, depending on whether shear wave interference conditions vary appreciably along the propagation path. In horizontally inhomogeneous ocean, weak shear magnifies the horizontal refraction of adiabatic normal modes due to sloping intra-sediment interfaces. In contrast to normal modes, attenuation of lateral waves with range is insensitive to weak shear. Concurrent measurements of normal mode and lateral wave attenuation can be potentially used to identify and separate the contributions of dissipation and shear waves into observed sound attenuation.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 1","pages":"314-327"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143007462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Reconstruction of reverberant sound fields over large spatial domains. 大空间域上混响声场的重建。

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034833

Antonio Figueroa-Duran, Efren Fernandez-Grande

{"title":"Reconstruction of reverberant sound fields over large spatial domains.","authors":"Antonio Figueroa-Duran, Efren Fernandez-Grande","doi":"10.1121/10.0034833","DOIUrl":"https://doi.org/10.1121/10.0034833","url":null,"abstract":"Characterising acoustic fields in rooms is challenging due to the complexity of data acquisition. Sound field reconstruction methods aim at predicting the acoustic quantities at positions where no data are available, incorporating generalisable physical priors of the sound in a room. This study introduces a model that exploits the general time structure of the room impulse response, where a wave-based expansion addresses the direct sound and early reflections, localising their apparent origin, and kernel methods are applied to the late part. This late energy is considered to follow a sinc-like spatial correlation, in accordance with the random wave field theory. Synthesised pressure points, which follow the observed statistics of the sound field, are introduced to enable extrapolation over large distances. The model is evaluated experimentally in a lecture room and an auditorium, demonstrating a successful reconstruction of the sound field across a 5 m aperture using three microphone arrays of only 4.2 cm radius each. These results indicate that the proposed methodology enables volumetric extrapolation over several orders of magnitude, which is significant in the context of navigable sound field reproduction, \"6-degrees of freedom\" spatial audio and sound field analysis in rooms.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 1","pages":"180-190"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142978929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Similitude laws for the vibroacoustic response of fluid-loaded plates under a turbulent boundary layer excitation.

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034868

Xavier Plouseau-Guédé, Alain Berry, Laurent Maxit, Valentin Meyer

引用次数: 0

Mode-informed complex-valued neural processes for matched field processing.

IF 2.1 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-01-01 DOI: 10.1121/10.0034856

Yining Liu, Wei Gao, Desheng Chen, Lijun Xu

{"title":"Mode-informed complex-valued neural processes for matched field processing.","authors":"Yining Liu, Wei Gao, Desheng Chen, Lijun Xu","doi":"10.1121/10.0034856","DOIUrl":"https://doi.org/10.1121/10.0034856","url":null,"abstract":"A complex-valued neural process method, combined with modal depth functions (MDFs) of the ocean waveguide, is proposed to reconstruct the acoustic field. Neural networks are used to describe complex Gaussian processes, modeling the distribution of the acoustic field at different depths. The network parameters are optimized through a meta-learning strategy, preventing overfitting under small sample conditions (sample size equals the number of array elements) and mitigating the slow reconstruction speed of Gaussian processes (GPs), while denoising and interpolating sparsely distributed acoustic field data, generating dense field data for virtual receiver arrays. The predicted field is then integrated with the matched field processing (MFP) method for passive source localization. Validation on the SWellEx-96 waveguide shows significant improvements in localization performance and reduces sidelobes of ambiguity surface compared to traditional MFP and GP-based MFP. Moreover, the proposed kernel based on MDFs outperforms the Gaussian kernel in describing ocean waveguide characteristics. Because of the feature representation of multi-modal mapping, this kernel enhances acoustic field prediction performance and improves the accuracy and robustness of MFP. Simulated and real data are used to verify the validity.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 1","pages":"493-508"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143023741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0