Applied Acoustics最新文献_第2页

Acoustic eigenvalue estimation using Rayleigh quotient iteration with a sparse matrix pencil

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-31 DOI: 10.1016/j.apacoust.2025.110573

Albert G. Prinn , Emanuël A.P. Habets

引用次数: 0

MFF-Net: A multi-scale feature fusion network for birdsong classification

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-31 DOI: 10.1016/j.apacoust.2025.110561

Hongfang Zhou , Kangyun Zheng , Wenjing Zhu , Jiahao Tong , Chenhui Cao , Heng Pan , Junhuai Li

{"title":"MFF-Net: A multi-scale feature fusion network for birdsong classification","authors":"Hongfang Zhou , Kangyun Zheng , Wenjing Zhu , Jiahao Tong , Chenhui Cao , Heng Pan , Junhuai Li","doi":"10.1016/j.apacoust.2025.110561","DOIUrl":"10.1016/j.apacoust.2025.110561","url":null,"abstract":"<div><div>In this paper, we propose a novel birdsong classification network, MFF-Net(Multi-scale Feature Fusion Network), which enhances classification performance through multi-scale feature fusion. The network is composed of four components. The first one is a multi-scale feature extraction module that extracts different scale features from the original sound. The second one is a feature fusion module utilizing a channel attention mechanism to integrate these features effectively. The third one is a feature replacement module designed to replace low-weight features and enhance feature representation. And the fourth one is a classifier module that performs birdsong classification. The proposed method was evaluated on two publicly available birdsong datasets and an urban sound dataset(Urbansound8k) to test its generalization performance. Experimental results showed that MFF-Net achieved a classification accuracy of 96.83 % on the BirdCLEF-13 dataset and demonstrated good generalization performance on the urban sound dataset (UrbanSound8k), achieving competitive results. These results highlight the robustness and effectiveness of MFF-Net in noisy and diverse environments.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"232 ","pages":"Article 110561"},"PeriodicalIF":3.4,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143261701","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

Deconvolution of the modal phase velocity spectrum for source depth estimation in shallow water

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-31 DOI: 10.1016/j.apacoust.2025.110566

Duo Zhai, Fenghua Li, Bo Zhang, Wen Li, Dai Liu

{"title":"Deconvolution of the modal phase velocity spectrum for source depth estimation in shallow water","authors":"Duo Zhai, Fenghua Li, Bo Zhang, Wen Li, Dai Liu","doi":"10.1016/j.apacoust.2025.110566","DOIUrl":"10.1016/j.apacoust.2025.110566","url":null,"abstract":"<div><div>The modal energies have been used to estimate source depth in shallow water. The performance of source depth estimation based on mode filtering would be severely impacted if the aperture of the horizontal array is not sufficient, given the closeness of modes in the wavenumber domain. In this paper, we use the fact that the phase velocity spectrum of the source does not truly represent the modal energy distribution, but rather one that is convolved with the array response functions. Thus, the source depth is estimated by deconvoluting the phase velocity spectrum. During the deconvolution, modal energy ratios are selected from the replica field, and an iterative process is used to search for phase velocities of modes to minimize the residual error between the measured and reconstructed phase velocity spectra. Simulation results demonstrate that the proposed method provides better performance with relatively small apertures and low signal-to-noise ratios compared to the maximum a posteriori filter. Real data collected from a horizontal array on the seafloor confirms that the proposed method is capable of accurately estimating source depth in a shallow water environment.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"232 ","pages":"Article 110566"},"PeriodicalIF":3.4,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143261702","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

Noise exposure and auditory risk from air-filled balloon bursts

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-31 DOI: 10.1016/j.apacoust.2025.110568

Luis Gomez-Agustina , Antonella Bevilacqua , Pedro Vazquez-Barrera

{"title":"Noise exposure and auditory risk from air-filled balloon bursts","authors":"Luis Gomez-Agustina , Antonella Bevilacqua , Pedro Vazquez-Barrera","doi":"10.1016/j.apacoust.2025.110568","DOIUrl":"10.1016/j.apacoust.2025.110568","url":null,"abstract":"<div><div>Latex party balloons filled with air are widely used in a variety of activities including acoustic measurements, educational demonstrations, and leisure. In acoustic research and professional practice, the burst of the balloon is employed as an impulse sound source to obtain room acoustic parameters. Due to its presumed harmless appearance and leisure connotations, acoustic practitioners and lay users often inflate and pop balloons unprotected and unsuspectingly without being aware of the serious auditory risk that those bursts may entail to their hearing health. This research investigates for the first time the noise exposure from popping air-filled latex balloons for a range of likely settings and assesses the risks of hearing damage against a range of relevant international occupational health regulations. Twenty-seven representative exposure scenarios involving peak sound pressure level measurements from three balloon sizes’ bursts were taken at three exposure distances in three different rooms. Results were analysed to estimate unprotected and protected exposure, auditory risks, critical distances, and an estimated permissible number of unprotected burst events. It was found that the exposure of an unprotected person holding and puncturing balloons of two commonly used sizes exceeded various regulatory exposure limits and carried a risk of permanent hearing damage. Wearing standardised hearing protection would reduce the exceeded exposure to eliminate the risk. The exposure of unprotected persons standing at 3 m or further from any balloon size burst was well below regulatory limits and the risk of hearing damage was small. It is expected that the findings, insights and safety guidance provided will help to raise awareness, change attitudes and practices of users. This will reduce the risk of hearing damage and aid professionals to comply with applicable occupational health and safety regulations.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"232 ","pages":"Article 110568"},"PeriodicalIF":3.4,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143261658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Underwater acoustic classification using wavelet scattering transform and convolutional neural network with limited dataset

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-31 DOI: 10.1016/j.apacoust.2025.110564

Yongxiang Liu , Biqi Zhang , Fantong Kong , Biao Wang , Chengming Luo , Lin Ma

{"title":"Underwater acoustic classification using wavelet scattering transform and convolutional neural network with limited dataset","authors":"Yongxiang Liu , Biqi Zhang , Fantong Kong , Biao Wang , Chengming Luo , Lin Ma","doi":"10.1016/j.apacoust.2025.110564","DOIUrl":"10.1016/j.apacoust.2025.110564","url":null,"abstract":"<div><div>Underwater acoustic signal classification plays a pivotal role in maritime applications, requiring accurately identifying various acoustic sources in complex underwater environments. While deep learning has substantially enhanced performance in this domain, its success is often contingent on hand-crafted input features and intricate network architectures. The paper presents a novel method for classifying underwater acoustic signals by integrating the Wavelet Scattering Transform (WST) with Attention-augmented Convolutional Neural Networks (CNNs). The WST, based on wavelet analysis, effectively extracts multiscale features while retaining crucial time-frequency information, offering translation invariance and reducing the dependency on large training datasets. Furthermore, incorporating ResNet-18 with an attention mechanism improves extracted features by capturing richer semantic information, even from limited training data. The method was evaluated on the ShipsEar dataset, utilizing only 8.5% of samples for training, 1.5% for validation, and the remaining 90% for testing. Our approach achieved a classification accuracy of 0.93, surpassing the traditional Mel spectrogram with ResNet-18 by 9.8%. These results underscore the effectiveness of the proposed method in handling challenging underwater acoustic environments with limited training data.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"232 ","pages":"Article 110564"},"PeriodicalIF":3.4,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143261696","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

Multi-gradient acoustic black hole metamaterial for near-perfect sound Attenuation: Theory, simulation and experiments

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-25 DOI: 10.1016/j.apacoust.2025.110546

Xinhao Zhang , Mingjing Geng , Caiyou Zhao , Yajun Cao , Ping Wang

{"title":"Multi-gradient acoustic black hole metamaterial for near-perfect sound Attenuation: Theory, simulation and experiments","authors":"Xinhao Zhang , Mingjing Geng , Caiyou Zhao , Yajun Cao , Ping Wang","doi":"10.1016/j.apacoust.2025.110546","DOIUrl":"10.1016/j.apacoust.2025.110546","url":null,"abstract":"<div><div>A multi-gradient acoustic black hole metamaterial module (MABHM) based on a genetic algorithm-neural network (NN-GA) is optimally designed for near-perfect sound attenuation of sub-wavelength metamaterial structures. Simulation results show that the absorption coefficient of the MABHM is up to more than 0.9 in the range of 300 Hz-20 kHz, and the MABHM has a good absorption effect for sound waves with different incident angles. The complex acoustic impedance of the MABHM has a phase loop approximating near the (1,0) coordinates. It is proved that the impedance matching effect is the key to realizing near-perfect sound absorption. The sound transmission loss curves of MABHM with different perforation ratios are the same, and the sound insulation at frequencies above 200 Hz reaches more than 35.0 dB. The experimental results of sound absorption coefficient and sound transmission loss are consistent with the simulation results. MABHM has the advantages of low-frequency broadband sound absorption and insulation, which can be used to realize nearly perfect noise reduction.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110546"},"PeriodicalIF":3.4,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095399","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

Research on the effect of auditory and visual environmental factors on patients’ waiting experience in healthcare

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-25 DOI: 10.1016/j.apacoust.2025.110540

Tianfu Zhou, Qin Wei, Kun Liu

{"title":"Research on the effect of auditory and visual environmental factors on patients’ waiting experience in healthcare","authors":"Tianfu Zhou, Qin Wei, Kun Liu","doi":"10.1016/j.apacoust.2025.110540","DOIUrl":"10.1016/j.apacoust.2025.110540","url":null,"abstract":"<div><h3>Background</h3><div>Implementing visual and auditory stimuli is recognized as an effective strategy to improve patients’ waiting experiences. However, the impact of window size and sound category on psychological responses has received scant attention. Besides, there is a lack of audio-visual interaction research in healthcare settings.</div></div><div><h3>Objectives</h3><div>This experimental study investigated the main and interactive effects of window size and sound category on occupants’ emotional state, environmental evaluation, and perceived waiting time.</div></div><div><h3>Methods</h3><div>In this study, a between-subjects laboratory experiment was conducted utilizing virtual reality. A total of 387 subjects were randomly assigned to one of 16 experiment conditions, which were combinations of four different window size scenarios and 4 distinct sound categories, to test the effects of window size and sound type as well as their interactions.</div></div><div><h3>Results</h3><div>The statistical findings indicated that both the visual factor (the window size) and the auditory factor (the sound category) exert statistically significant influences on psychological indicators. Moreover, a significant interaction effect between the visual and auditory factors was observed on subjects’ emotional states. Notably, mechanical sound was found to counteract the restorative effects of window, whereas increasing window size in anthropogenic sound can lead to enhanced emotional benefits.</div></div><div><h3>Conclusions</h3><div>The study provides insight into the role of window size and sound category in affecting occupants’ waiting experience, emphasizing the interactive effects between visual and auditory elements. It is anticipated that the research will contribute to the multisensory literature and provide evidence-based guidance for the design of restorative waiting environments.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110540"},"PeriodicalIF":3.4,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095403","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

Analysing the bayan drum; its tuning, and its bols from a musical standpoint

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-24 DOI: 10.1016/j.apacoust.2025.110536

Sreerag Ashok, Nachiketa Tiwari

{"title":"Analysing the bayan drum; its tuning, and its bols from a musical standpoint","authors":"Sreerag Ashok, Nachiketa Tiwari","doi":"10.1016/j.apacoust.2025.110536","DOIUrl":"10.1016/j.apacoust.2025.110536","url":null,"abstract":"<div><div>The Indian tabla is a pair of drums; the <em>bayan</em> played with the left hand, and the <em>dayan</em> played with the right hand. The <em>bayan</em> is often played in ways such that its pitch changes during a performance. Past research on the <em>bayan</em> is limited and has primarily focused on the eigenmodes and eigenvalues of the drum’s membrane, and the harmonicity of the drum. What has not been explored is the nature of its <em>bols</em> (musical sounds) and how they relate to the drum’s design and its playing technique. There is also a need to understand the acoustical basis underlying its tuning process, which can often be a time-consuming exercise. We have attempted to fill such gaps by conducting a detailed experimental study of the <em>bayan</em>. Towards such a goal, we have captured the displacement of the <em>bayan</em> membrane and the resulting audio signal of musical <em>bols</em> emanating from the <em>bayan</em>. For capturing membrane displacements, we employed two stereoscopically arranged high-speed cameras and the Digital Image Correlation (DIC) techniques along with a high-speed data acquisition system. Our investigations revealed how the presence of asymmetry in membrane tension can result in frequency splitting around the second harmonic frequency, the variation of corresponding peak amplitudes due to the rotation of striking position, and the phenomenon of degenerate modes around the third harmonic frequency. We also found a correlation between the playing technique of the /ɡʰe/ <em>bol</em>, its decay time and the extent of variation in the <em>bayan</em>’s lowest frequency. Our work also revealed linkages between several other spectral features of the /ɡaː/ and /ɡʰe/ <em>bols</em> and the tabla’s structure and its playing technique. All such understandings can help us design a better <em>bayan</em> and a detuning detector, which can speed up the <em>bayan</em> tuning process.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110536"},"PeriodicalIF":3.4,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095404","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 Synchronized Filter-s Least Mean Square (SFsLMS) algorithm for multi-channel ANC in aviation noise suppression

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-23 DOI: 10.1016/j.apacoust.2025.110552

Mossalam Khamis, Sheng Zhang, Saeed Ibrahim

{"title":"A Synchronized Filter-s Least Mean Square (SFsLMS) algorithm for multi-channel ANC in aviation noise suppression","authors":"Mossalam Khamis, Sheng Zhang, Saeed Ibrahim","doi":"10.1016/j.apacoust.2025.110552","DOIUrl":"10.1016/j.apacoust.2025.110552","url":null,"abstract":"<div><div>This paper presents a synchronized Filtered-s Least Mean Squares (SFsLMS) algorithm for multichannel Active Noise Control (ANC) systems aimed at mitigating aviation noise. The SFsLMS algorithm addresses signal delays inherent in aircraft environments, which degrade the performance of traditional ANC algorithms. Incorporating delay estimation into the adaptive filtering process ensures accurate alignment of input and reference signals, leading to improved convergence speed and stability. The results demonstrate that the SFsLMS algorithm significantly enhances noise cancellation performance in dynamic aviation noise conditions, offering a scalable and robust solution for real-time noise reduction in enclosed areas near airports. This advancement contributes to increased comfort and reduced noise pollution, highlighting the algorithm's potential for widespread application in aviation noise control systems. The evaluation is conducted using a <span><math><mo>(</mo><mn>2</mn><mo>×</mo><mn>4</mn><mo>×</mo><mn>4</mn><mo>)</mo></math></span> (ANC) system, with performance measured in terms of Averaged Noise Reduction (ANR). The results reveal a marked improvement in convergence speed and stability, as demonstrated by the rapid decrease and sustained low levels of ANR across all microphones.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110552"},"PeriodicalIF":3.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095405","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

An acoustic survey of Korean school classrooms: The necessity for Korean acoustic standards and design guideleines

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-01-22 DOI: 10.1016/j.apacoust.2025.110548

Young-Ji Choi

{"title":"An acoustic survey of Korean school classrooms: The necessity for Korean acoustic standards and design guideleines","authors":"Young-Ji Choi","doi":"10.1016/j.apacoust.2025.110548","DOIUrl":"10.1016/j.apacoust.2025.110548","url":null,"abstract":"<div><div>This paper presents the results of a recent noise and acoustic survey conducted in school classrooms in Korea. The objective of the survey was to provide information on the acoustic characteristics of classrooms in Korea and to emphasize the necessity of introducing acoustic standards for classrooms. The survey includes unoccupied data on the acoustic conditions and sound insulation performance in addition to occupied speech and noise levels in 16 classrooms in four schools with a range of student ages. None of the classrooms complied with the background noise level, reverberation time, and airborne sound insulation requirements aa defined in the ANSI and BB93 standards. All eight classrooms were found to meet the impact sound insulation requirements. A Gaussian mixture modelling analysis of the data from all 27 classes in the four schools revealed that the mean speech level was 65.1 dBA (s.d. = 5.2), the mean noise level was 50 dBA (s.d. = 6.1), and the difference between the speech and noise levels was 15.1 dBA (s.d. = 3.3). It was observed that the mean speech levels were higher in elementary school classrooms than in junior high, high, and special school classrooms, with a parallel trend evident in noise levels. The findings indicate a general trend of decreasing noise levels with increasing age of the students and decreasing numbers of students. A significant correlation was observed between speech and student activity noise levels, with a 0.71 dBA increase in speech levels for every 1 dBA in noise levels. Furthermore, the noise levels in the school classrooms were found to be closely related to the type of classroom activity. The predicted T<sub>30</sub> values for occupied conditions showed a statistically significant correlation with the noise levels and SNR values. A significant correlation was observed between the mean noise levels in classrooms and noise levels in corridors, indicating that the management of disruptive noise from adjacent spaces is essential to ensure optimal acoustics for speech in classrooms.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"231 ","pages":"Article 110548"},"PeriodicalIF":3.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095406","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