Applied Acoustics最新文献_第3页

A rapid approach to urban traffic noise mapping with a generative adversarial network 利用生成式对抗网络快速绘制城市交通噪声地图的方法

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-13 DOI: 10.1016/j.apacoust.2024.110268

{"title":"A rapid approach to urban traffic noise mapping with a generative adversarial network","authors":"","doi":"10.1016/j.apacoust.2024.110268","DOIUrl":"10.1016/j.apacoust.2024.110268","url":null,"abstract":"<div><p>With rapid urbanisation and the accompanying increase in traffic density, traffic noise has become a major concern in urban planning. However, traditional grid noise mapping methods have limitations in terms of time consumption, software costs, and a lack of parameter integration interfaces. These limitations hinder their ability to meet the need for iterative updates and rapid performance feedback in the early design stages of street-scale urban planning. Herein, we developed a rapid urban traffic noise mapping technique that leverages generative adversarial networks (GANs) as a surrogate model. This approach enables the rapid assessment of urban traffic noise distribution by using urban elements such as roads and buildings as the input. The mean values for the mean squared error (RMSE) and structural similarity index (SSIM) are 0.3024 dB(A) and 0.8528, respectively, for the validation dataset. The trained model is integrated into Grasshopper as a tool, facilitating the rapid generation of traffic noise maps. This integration allows urban designers and planners, even those without expertise in acoustics, to easily anticipate changes in acoustics impacts caused by design in the early design stages.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229825","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

Compact acoustic metamaterials based on azimuthal labyrinthine channels for broadband low-frequency soundproofing and ventilation 用于宽带低频隔音和通风的基于方位迷宫通道的紧凑型声超材料

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-13 DOI: 10.1016/j.apacoust.2024.110273

引用次数: 0

An auditory selective attention brain-computer interface system based on auditory steady-state response 基于听觉稳态响应的听觉选择性注意脑机接口系统

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-13 DOI: 10.1016/j.apacoust.2024.110291

{"title":"An auditory selective attention brain-computer interface system based on auditory steady-state response","authors":"","doi":"10.1016/j.apacoust.2024.110291","DOIUrl":"10.1016/j.apacoust.2024.110291","url":null,"abstract":"<div><p>Auditory steady-state response (ASSR) is a brain steady-state response induced by periodic sound signals, which can be used to build an auditory brain-computer interface (BCI), thereby providing a pathway for visually impaired patients to communicate with the outside world. Most of existing ASSR-based BCI studies use linear discriminant classifier (LDA) and spatial coherence to detect ASSRs. Therefore, there is an urgent need for efficient electroencephalogram (EEG) decoding methods to improve the performance of ASSR-based BCI systems. In this study, we elicited ASSRs using sinusoidal amplitude modulated (SAM) tones that simultaneously delivered different modulation frequencies (i.e., 37 Hz for the left channel and 43 Hz for the right channel). Subjects were asked to focus their attention on the auditory stimulation on one side according to the auditory cue. Filter bank common spatial pattern (FBCSP) algorithm was innovatively introduced to detect the ASSRs. Offline results showed that the brain region with strong ASSRs was the central forehead area, and when subjects paid attention to the auditory stimulation at 37 Hz or 43 Hz, the ASSR response of 37 Hz or 43 Hz on the corresponding side would be enhanced compared to the no attention condition. Online results obtained from twelve healthy subjects showed that the mean recognition accuracy of the proposed ASSR-based BCI system achieved a mean accuracy of 82.22 ± 3.11 %. Moreover, the present study further verified that weak auditory stimuli with low stimulus intensity (i.e., 40 dB SPL) could also be used to build ASSR-based BCIs, and achieved an online mean accuracy of 78.89 ± 2.54 %. These results verified that the FBCSP algorithm could be used for detecting ASSRs and the feasibility of the proposed ASSR-based BCI system, providing a great idea for building a high-speed ASSR-based BCI system.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142171596","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

Frequency modulation of an aerodynamic whistle-based bat deterrent 基于空气动力哨声的蝙蝠威慑装置的频率调制

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-13 DOI: 10.1016/j.apacoust.2024.110276

引用次数: 0

Quantitative detection of axial defects in pipelines based on modified multi-mode total focusing method (MTFM) 基于改进的多模全聚焦法（MTFM）的管道轴向缺陷定量检测

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-12 DOI: 10.1016/j.apacoust.2024.110288

{"title":"Quantitative detection of axial defects in pipelines based on modified multi-mode total focusing method (MTFM)","authors":"","doi":"10.1016/j.apacoust.2024.110288","DOIUrl":"10.1016/j.apacoust.2024.110288","url":null,"abstract":"<div><p>The axial defects in pipelines are hard to detect effectively with the conventional multi-mode total focusing method (MTFM). The inner and outer curved surfaces of pipelines induce beam divergence, reducing focusing performance and introducing imaging distortion and errors. In this paper, the MTFM employed for inspecting flat plates is modified in consideration of the influences of pipe curvature on the ray paths of direct, half-skip and full-skip mode waves. The corresponding travel times are recalculated and used for performing delay-and-sum (DAS) beamforming, achieving the profile reconstruction and quantitative detection of axial defects. The simulation and experiments were implemented on the carbon steel pipeline with 100 mm outer radius and 20 mm wall thickness. The phased array (PA) probe with 32 elements and 5 MHz central frequency and the 55° curved wedge were adopted to detect the inner-wall axial defects in pipeline. The profiles of the planar defects with a length of 5 mm and orientation angles of −45°∼45° were well reconstructed by modified MTFM, and the measurement errors of flaw lengths, orientation angles and tip depths were no more than 16.6 %, 5.1° and 4.0 % after correction, respectively. Further simulated and experimental results indicate that the internal axial defects can also be detected and quantified by modified MTFM. Finally, the influences of pipe curvature on modified MTFM are discussed by simulation.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142171595","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 multi-channel active noise control system using deep learning-based method to estimate secondary path and normalized-clustered control strategy for vehicle interior engine noise 一种多通道主动噪声控制系统，采用基于深度学习的方法估计次要路径，并采用归一化聚类控制策略来控制车内发动机噪声

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-11 DOI: 10.1016/j.apacoust.2024.110263

{"title":"A multi-channel active noise control system using deep learning-based method to estimate secondary path and normalized-clustered control strategy for vehicle interior engine noise","authors":"","doi":"10.1016/j.apacoust.2024.110263","DOIUrl":"10.1016/j.apacoust.2024.110263","url":null,"abstract":"<div><p>Although the multi-channel active noise control (ANC) system based on the traditional clustered control strategy solves the problems of high algorithm complexity and fragile stability, the step size setting of each local controller relies on the trial-and-error method, which makes it difficult to trade-off the convergence speed and the steady-state error of the algorithm, and the secondary path estimation is susceptible to the interference of the dynamic environment. To solve the above problems, this study proposes an efficient multi-channel ANC system, which accurately estimates the secondary paths based on the deep learning prediction model and adopts a normalized-clustered control strategy to normalize the step size of the two-channel FxLMS algorithm of each local controller, which balances the system convergence speed and the steady-state error. A series of real-vehicle ANC experiments are conducted. The results show that under stationary conditions, the proposed control strategy control converges quickly and has better noise reduction performance than the traditional clustered control strategy. Under non-stationary conditions, after normalizing the step size of the local controller, the proposed control strategy can better balance the steady-state error and the convergence speed of the control strategy and improve the noise reduction tracking ability. Finally, it is verified that the proposed deep learning method can accurately estimate the secondary path after changes and ensure the noise reduction performance of the proposed control strategy.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169513","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

Radial velocity estimation method for a single hydrophone based on passive target line spectrum characteristics 基于被动目标线频谱特征的单个水听器径向速度估算方法

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-11 DOI: 10.1016/j.apacoust.2024.110266

{"title":"Radial velocity estimation method for a single hydrophone based on passive target line spectrum characteristics","authors":"","doi":"10.1016/j.apacoust.2024.110266","DOIUrl":"10.1016/j.apacoust.2024.110266","url":null,"abstract":"<div><p>Passive radial velocity estimation based on a single hydrophone has a wide range of applications in engineering, and can be used in small underwater platforms such as submerged buoys and underwater gliders. The conventional passive radial velocity estimation method based on a single hydrophone has poor performance due to the influence of noise. In this paper, the time delay coherence coefficient (TDCC) of passive target line spectrum is derived based on a single hydrophone. Further, the radial velocity can be obtained by the time delay required by the phase change of TDCC for one period. Based on the characteristics that the line spectrum phase is stable and the noise phase is random, coherent averaging (CA) is applied to suppress noise. The use of CA greatly reduces the influence of noise on TDCC and efficiently improves the accuracy of radial velocity estimation. The performance and system error of the proposed CA-TDCC method are analyzed through a series of simulations. Finally, the CA-TDCC method is used to process SwellEx-96 data, and the relative error of radial velocity estimation is less than 10%, which verifies the effectiveness of this method in practical applications.</p><p>Abbreviation: CA, Coherent averaging; SNRs, Signal-to-noise ratios; TDCC, Time delay coherence coefficient; TMA, Target motion analysis.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169512","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

Asynchronous localization of dynamic node through underwater acoustic sensor networks 通过水下声学传感器网络对动态节点进行异步定位

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-10 DOI: 10.1016/j.apacoust.2024.110275

{"title":"Asynchronous localization of dynamic node through underwater acoustic sensor networks","authors":"","doi":"10.1016/j.apacoust.2024.110275","DOIUrl":"10.1016/j.apacoust.2024.110275","url":null,"abstract":"<div><p>In most cases, the operation of underwater acoustic sensor networks (UASNs) relies on accurate sensor location information. However, UASNs present more challenges than terrestrial sensor networks, such as the propagation speed variation with depth (i.e., stratification effect), asynchronous clock, node mobility, etc. In this paper, an efficient method of asynchronous localization is proposed by taking into account the stratification effect and node mobility. Firstly, a network is constructed that consists of surface buoys, AUVs, and target sensors. Secondly, an iterative least squares (LS) method is developed to locate AUV by establishing the relationship between propagation delay and location estimation. Thirdly, the passive mobility velocity of AUV is used to develop and solve the mobility model of the target sensors. Then, with the support of AUV, an asynchronous localization method is developed to estimate the target position, which improves the localization accuracy through motion and stratification compensation strategies. Moreover, the proposed method is validated through Cramer Rao lower bound (CRLB) analysis. Finally, simulation is performed to show that the proposed method is more efficient in reducing the estimation errors.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003682X24004262/pdfft?md5=33e72bd2c78779acf6eb3046a1b30b4d&pid=1-s2.0-S0003682X24004262-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162404","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

Bifunctional acoustic lossy coupler for broadband power splitting and absorption 用于宽带功率分配和吸收的双功能声学有损耦合器

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-10 DOI: 10.1016/j.apacoust.2024.110274

{"title":"Bifunctional acoustic lossy coupler for broadband power splitting and absorption","authors":"","doi":"10.1016/j.apacoust.2024.110274","DOIUrl":"10.1016/j.apacoust.2024.110274","url":null,"abstract":"<div><p>In this work, we propose a bifunctional acoustic lossy coupler for broadband power splitting and absorption. Following the three-level system in quantum physics, the three-waveguide (WG) acoustic system is proposed to obtain efficient energy transfer behaviors. Given the agreement in form between Schr <span><math><mover><mi>o</mi><mo>¨</mo></mover></math></span> dinger equation and coupled mode equation, the time-dependent external fields are mapped into space-varying coupling actions between adjacent WGs. The propagation paths of the incident waves can be predicted by Schr <span><math><mover><mi>o</mi><mo>¨</mo></mover></math></span> dinger-like equation, which are verified by numerical simulations and experimental measurements. Owing to the different responses to lossy medium in WG B for WG A incidence and WG C incidence, the acoustic coupler can be considered as a broadband power splitter and muffler by selecting different input ports. Meanwhile, according to the reversibility of acoustic path, a switchable acoustic logic gate with functions of “OR” and “XOR” is constructed as well by taking advantage of the lossless adiabatic coupler, and the function can be controlled conveniently by reversing the phase of input waves from WG A or C. Our work provides a new scheme for the design of bifunctional acoustic coupler, which may have a profound impact on the development of non-resonance acoustic high-performance devices.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162385","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

Correction of a strong seat-dip in the Teatro Argentino of la Plata in Argentina 纠正阿根廷拉普拉塔阿根廷剧院座位大幅减少的现象

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2024-09-10 DOI: 10.1016/j.apacoust.2024.110284

{"title":"Correction of a strong seat-dip in the Teatro Argentino of la Plata in Argentina","authors":"","doi":"10.1016/j.apacoust.2024.110284","DOIUrl":"10.1016/j.apacoust.2024.110284","url":null,"abstract":"<div><p>The acoustic quality of the new Teatro Argentino de la Plata received various unfavourable comments from musicians, critics and the general audience after its inauguration in 1999. The lack of bass frequencies, low sensation of envelopment, a <em>flat sound</em>—i.e., a sound that seems to come only from the front and does not surround the listener—and a strong seat-dip on the main floor were highlighted. After carrying out acoustical measurements and developing a digital model of the hall, the analysis showed, on the main floor level, a deficit of acoustical energy in the first 100 ms after the direct sound and insufficient lateral energy. To correct those problems a new acoustical canopy, made with a distributed array of rectangular panels, was placed over the pit. The situation improved substantially, but there was still a minor seat-dip in the stalls. A restauration was undertaken in 2016, which included the replacement of the seats, and it was seen as an opportunity to further fix the residual seat-dip problem. This paper briefly describes the action of the new canopy related to the seat-dip and the criteria for choosing the new seat model.</p></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003682X24004353/pdfft?md5=6e686a56e26a3004c2585f5a7923bfca&pid=1-s2.0-S0003682X24004353-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162402","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