Applied Acoustics最新文献_第9页

Effects of multi-divisional driving using a linear array transducer on microbubble backscattering

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-17 DOI: 10.1016/j.apacoust.2024.110482

Junsyou Kanashima , Junseok An , Naohiro Sugita , Tadahiko Shinshi

{"title":"Effects of multi-divisional driving using a linear array transducer on microbubble backscattering","authors":"Junsyou Kanashima , Junseok An , Naohiro Sugita , Tadahiko Shinshi","doi":"10.1016/j.apacoust.2024.110482","DOIUrl":"10.1016/j.apacoust.2024.110482","url":null,"abstract":"<div><div>Contrast-enhanced ultrasound imaging (CEUS) employs ultrasound contrast agents (UCAs) for diagnostic purposes. Despite its effectiveness in lesion detection, the low signal-to-noise ratio (SNR) limits its utility in deep tissue and small vessel imaging. To address this limitation, we propose a novel driving method for a linear array transducer to improve the backscattering property from microbubbles. This method involves dividing array elements into two or three segments and driving them in opposite phases between adjacent segments, referred to in this paper as 2-division and 3-division driving, respectively. To assess the effectiveness of this driving method, we experimentally define and study the backscattering coefficient of microbubbles. Additionally, we conduct dynamic simulations of microbubble behavior to validate the experimental results. The microbubbles were sonicated at 1.38 MHz while varying the inter-bubble distance (IBD). The results from both experiments and simulations demonstrate that 3-division driving yields the highest backscattering coefficient across all IBD values. This suggests that multidivisional driving could enhance deep tissue and small vessel imaging.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110482"},"PeriodicalIF":3.4,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095380","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

Design of the Wiener gain in noisy and reverberant environments

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-16 DOI: 10.1016/j.apacoust.2024.110491

Qian Xiang , Jingdong Chen , Jacob Benesty , Tao Lei , Chao Pan

引用次数: 0

Manipulation of submicron particles in fluid using microbubbles in microporous arrays as seeds

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-16 DOI: 10.1016/j.apacoust.2024.110426

Shenggeng Wang , Zhenyu Wang , Guoping Tang , Xinjian Zhu , Zengtao Yang , Qingli Zhou

{"title":"Manipulation of submicron particles in fluid using microbubbles in microporous arrays as seeds","authors":"Shenggeng Wang , Zhenyu Wang , Guoping Tang , Xinjian Zhu , Zengtao Yang , Qingli Zhou","doi":"10.1016/j.apacoust.2024.110426","DOIUrl":"10.1016/j.apacoust.2024.110426","url":null,"abstract":"<div><div>Existing bubble-acoustic microstreaming is merely capable of handling micron-sized particles. In this study, microbubbles confined in microporous arrays were used as seeds to manipulate submicron particles in fluid. To understand the working principle, a theory of governing equations of particle motion in bubble-acoustic microfluidics was built. A three-dimensional finite element model was developed to study the formation mechanism of submicron particles (r = 400 nm) in an acoustic streaming field. As follows, an experimental study is performed to verify the theory. In the experiments, bulk acoustic waves with a frequency of 830KHz is used to excite microbubble oscillations in microporous arrays. Microbubbles, oscillating in large aperture microporous arrays (30um and 40um) as seeds, have an unstable effect on capturing and pumping submicron particles(r = 400 nm). When the diameter of micropores is reduced to 15um, the microbubbles can capture a large number of submicron particles efficiently. Furthermore, the efficiency of trapping submicron particles is nearly ten times higher than that of using solid particles as seeds. The wavelength of acoustic waves is four orders of magnitude larger than the size of the submicron particles. The results showed that low-frequency bubble-acoustic microfluidic devices could provide a simple and cost-effective solution for effective and uniform manipulation of submicron biological particles.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110426"},"PeriodicalIF":3.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095878","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

Implementation of minimum output variance filtered reference least mean square algorithm with optimal time-varying penalty factor estimate to overcome output saturation

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-16 DOI: 10.1016/j.apacoust.2024.110473

Junwei Ji , Dongyuan Shi , Xiaoyi Shen , Zhengding Luo , Woon-Seng Gan

{"title":"Implementation of minimum output variance filtered reference least mean square algorithm with optimal time-varying penalty factor estimate to overcome output saturation","authors":"Junwei Ji , Dongyuan Shi , Xiaoyi Shen , Zhengding Luo , Woon-Seng Gan","doi":"10.1016/j.apacoust.2024.110473","DOIUrl":"10.1016/j.apacoust.2024.110473","url":null,"abstract":"<div><div>The minimum output variance filtered reference least mean square (MOV-FxLMS) algorithm can effectively prevent the instability of active noise control (ANC) systems caused by the output saturation of the secondary source. The penalty factor, a critical parameter in MOV-FxLMS algorithm, is usually determined by trial and error, and its inaccurate estimate degrades algorithm's performance. Previous studies prove that estimating the optimal penalty factor requires prior knowledge of the disturbance. In practice, the penalty factor varies with the acoustic environment and primary source. Hence, this paper proposes an optimal time-varying penalty factor estimate method, which can track the variation of the disturbance and primary noise and assist the MOV-FxLMS algorithm in achieving the optimal control with output constraint. Moreover, the proposed algorithm also efficiently reduces computations and storage capacity requirements compared to other algorithms. The numerical simulation not only demonstrates that the proposed algorithm can react to noise variations but also reduces the influence of uncorrelated signals at the error sensor. Furthermore, the real-time experiment on a noise duct demonstrates the effectiveness of the proposed algorithm for the output saturation problem, exhibiting practical significance.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110473"},"PeriodicalIF":3.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095377","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

Low complexity DOA estimation based on weighted noise component subtraction for smart-home application

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-16 DOI: 10.1016/j.apacoust.2024.110490

Haixin Guan , Shaowei Ding , Wei Dai , Xiaobin Tan , Yanhua Long , Jiaen Liang

{"title":"Low complexity DOA estimation based on weighted noise component subtraction for smart-home application","authors":"Haixin Guan , Shaowei Ding , Wei Dai , Xiaobin Tan , Yanhua Long , Jiaen Liang","doi":"10.1016/j.apacoust.2024.110490","DOIUrl":"10.1016/j.apacoust.2024.110490","url":null,"abstract":"<div><div>In smart home applications, accurate direction of arrival (DOA) estimation of sound sources is essential for beamforming and product interaction features. However, domestic environments often suffer from reverberation, noise, and interference, making DOA estimation challenging, especially when human voices interfere. This paper proposes a lightweight, noise-and-interference-resistant DOA method based on the SRP-PHAT algorithm. By leveraging spectral subtraction and the wake-up-to-recognize process, the method estimates the noise SRP-PHAT spectrum during non-wake periods. It then derives the mixed SRP-PHAT spectrum and subtracts the noise component to obtain a clean SRP-PHAT spectrum. Recognizing the sparsity and uneven energy distribution of speech signals, the method uses timestamps from the wake word engine to estimate the target source mask and apply weighting to the clean SRP-PHAT spectrum. Extensive experiments on simulated and real-recorded data show that this method significantly enhances DOA performance in complex scenarios.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110490"},"PeriodicalIF":3.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095880","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

SepLocNet: Multi-speaker localization with separation-guided TDOA estimation in wireless acoustic sensor networks

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-16 DOI: 10.1016/j.apacoust.2024.110488

Xudong Dang , Adrian Herzog , Srikanth Raj Chetupalli , Emanuël A.P. Habets , Hongwei Liu

{"title":"SepLocNet: Multi-speaker localization with separation-guided TDOA estimation in wireless acoustic sensor networks","authors":"Xudong Dang , Adrian Herzog , Srikanth Raj Chetupalli , Emanuël A.P. Habets , Hongwei Liu","doi":"10.1016/j.apacoust.2024.110488","DOIUrl":"10.1016/j.apacoust.2024.110488","url":null,"abstract":"<div><div>Time difference of arrival (TDOA)-based multi-speaker localization allows three-dimensional localization using a low-cost wireless acoustic sensor network (WASN). However, two obstacles hinder accurate localization of multiple speakers. Firstly, the performance of existing multi-speaker TDOA estimation methods suffers from reverberation and noise. Secondly, the correct association of TDOA estimates and speakers across multiple sensor nodes needs to be solved. To address these issues, we develop a hybrid approach that combines the excellent performance of deep learning-based TDOA estimation with the interpretability of signal processing-based TDOA association, referred to as SepLocNet. In each node of a WASN, a speech separation-guided algorithm is used to accurately estimate multi-speaker TDOAs and construct auxiliary association features in reverberant noisy environments. In the fusion center, the similarity of the auxiliary association features is exploited to readily define the cost of associating TDOA estimates from multiple nodes to the same speaker. With these association costs, an efficient algorithm is derived to solve the TDOA association problem based on difference of convex functions programming. Finally, the locations of multiple speakers are readily estimated by imposing a well-established single-source localization method on the estimated TDOA associations. Experimental results show the proposed SepLocNet achieves much higher accuracy in terms of multi-speaker TDOA estimation and position estimation than existing signal processing-based algorithms. Moreover, the computational time at the fusion center is comparable.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110488"},"PeriodicalIF":3.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095879","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

Exploring the effect of target correlation on binaural speech intelligibility for quasi-anechoic and reverberated conditions

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-15 DOI: 10.1016/j.apacoust.2024.110494

Nicola Prodi, Chiara Visentin, Matteo Pellegatti

{"title":"Exploring the effect of target correlation on binaural speech intelligibility for quasi-anechoic and reverberated conditions","authors":"Nicola Prodi, Chiara Visentin, Matteo Pellegatti","doi":"10.1016/j.apacoust.2024.110494","DOIUrl":"10.1016/j.apacoust.2024.110494","url":null,"abstract":"<div><div>The transmission of the signal from a speech source and of the noise from one or multiple maskers can be fully described by the binaural impulse responses, which include all of the physical factors that are known to be relevant for speech intelligibility. In particular, binaural speech intelligibility outperforms monaural performance when dissimilarities of interaural levels and time delays can be detected at the ears. While a rich literature has investigated the role of masker’s impulse responses and in particular how its correlation, besides level and time discrepancies, can modulate speech intelligibility, a similar detailed investigation for the target source cannot be found in the previous works. This work reviews the knowledge achieved so far on the topic and sets listening tests in quasi-anechoic and reverberated scenarios to examine the mechanisms by which target correlation might influence binaural speech intelligibility. It is found that target correlation can be singled out as a factor directly or indirectly in the listening tests; the indication given by the experiments is coherent with the previous interpretations of unmasking phenomena and with the idea that target correlation is supportive to the extraction of binaural timing cues that contribute to binaural performance.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110494"},"PeriodicalIF":3.4,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095877","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

Theoretical modeling of Helmholtz-type acoustic metasurface for enhanced photoacoustic detection in liquids

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-14 DOI: 10.1016/j.apacoust.2024.110485

Qinhao Lin , Da Gao , Yongdu Ruan , Boao Jin , Shaobo Wang , Chong Li , Ruimin Chen , Junhui Shi

{"title":"Theoretical modeling of Helmholtz-type acoustic metasurface for enhanced photoacoustic detection in liquids","authors":"Qinhao Lin , Da Gao , Yongdu Ruan , Boao Jin , Shaobo Wang , Chong Li , Ruimin Chen , Junhui Shi","doi":"10.1016/j.apacoust.2024.110485","DOIUrl":"10.1016/j.apacoust.2024.110485","url":null,"abstract":"<div><div>Impedance mismatch at the aqueous-gaseous interface poses a fundamental challenge for photoacoustic detection in liquid media, limiting applications in health monitoring, such as continuous blood glucose monitoring. Our previous work demonstrated a Helmholtz-type acoustic metasurface (HAM), consisting of a perforated plate with a subwavelength air layer, could substantially enhance acoustic transmission from water to air, thereby improving the liquid detection sensitivity of photoacoustic spectroscopy. However, the traditional theory of Helmholtz resonators proves unsuitable for analyzing HAMs due to the extremely narrow air layer, where near-field effects dominate. Accordingly, this work presents an analytical model for the transmission coefficient of HAMs. The modal expansion method is utilized to account for evanescent wave components in the vicinity of both the inlet and outlet of the orifice. Thermal viscosity loss along the walls of the orifice and air layer is also incorporated via equivalent fluid theory. Numerical and experimental results validate the effectiveness of the proposed model in predicting the transmission coefficient of the HAM at the water–air interface. Furthermore, an analytical model is derived to evaluate the signal amplification factor of photoacoustic cells coupled with HAMs, which can provide theoretical guidance for the optimization and design of such systems.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110485"},"PeriodicalIF":3.4,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095373","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

Sound source localization based on three-element microphone array and RepMobileViT model

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-13 DOI: 10.1016/j.apacoust.2024.110480

Xiaoguang Wu, Rui Ni, Xingyue Cui, Tianwen Guo, Huadong Peng

{"title":"Sound source localization based on three-element microphone array and RepMobileViT model","authors":"Xiaoguang Wu, Rui Ni, Xingyue Cui, Tianwen Guo, Huadong Peng","doi":"10.1016/j.apacoust.2024.110480","DOIUrl":"10.1016/j.apacoust.2024.110480","url":null,"abstract":"<div><div>Traditional microphone array-based sound source localization methods typically begin with signal processing, where the source position is regarded as an estimated continuous value in a certain space. However, in some practical scenarios, such as conference rooms, source localization only needs to focus on some predefined areas, thus can be transformed into a deep learning classification problem. To solve the requirements of small size microphone arrays while maintaining the accuracy of source localization in reverberant environments, a feature extraction method based on sound intensity and an efficient lightweight model are proposed for the direction of arrival (DOA) estimation using a three-element microphone array. Firstly, two types of sound intensity feature spectrograms are designed to effectively extract sound source azimuth information under reverberant conditions. Secondly, the RepViT architecture is introduced into the MobileViT network to construct a new lightweight network, which estimates the source position with smaller parameters and faster speed. Finally, the sound intensity spectrogram is fed into the proposed model to estimate the DOA. Compared to existing methods, the proposed method exhibits more efficient and accurate performance in localizing with small arrays under simulated and real environments.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110480"},"PeriodicalIF":3.4,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095375","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

Stationary wavelet Filtering Cepstral coefficients (SWFCC) for robust speaker identification

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-12-12 DOI: 10.1016/j.apacoust.2024.110435

Ibrahim Missaoui , Zied Lachiri

引用次数: 0