Applied Acoustics最新文献_第3页

Study on the nonlinear interaction characteristics between rail cracks and ultrasonic based on finite element-spectral element coupling method 基于有限元-谱元耦合方法的钢轨裂缝与超声波非线性相互作用特性研究

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-15 DOI: 10.1016/j.apacoust.2025.110703

Zhiqiang Xue , Yude Xu , Meng Hu , Xiaoteng Zhu

引用次数: 0

Practical spatial acoustic measurements in performance halls with a reduced virtual orchestra 实际空间声学测量在演出大厅与减少虚拟乐团

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-15 DOI: 10.1016/j.apacoust.2025.110740

Henrik Möller, Jukka Pätynen

{"title":"Practical spatial acoustic measurements in performance halls with a reduced virtual orchestra","authors":"Henrik Möller, Jukka Pätynen","doi":"10.1016/j.apacoust.2025.110740","DOIUrl":"10.1016/j.apacoust.2025.110740","url":null,"abstract":"<div><div>The Virtual Orchestra has previously been used to measure room acoustic conditions of major concert halls, with the aims of objective comparisons and subjective evaluations through auralization, and to characterize and investigate specific problems in halls.</div><div>The idea is to simulate an actual orchestra on stage with an array of loudspeakers and then measure the spatial impulse response in the hall with multiple source positions. This approach gives a more complete picture of the acoustic projection and reflection paths between the stage and the audience than traditional measurements with a single omnidirectional loudspeaker in few positions.</div><div>However, the originally proposed system requires over 24 loudspeakers and is therefore not very convenient for consultants to use from the practical perspective.</div><div>In this paper a scaled-down version of the measurement system is presented. This system uses a total of 8 loudspeakers and the spatial impulse response is recorded by a standard A-format microphone. The comparison to the original system is presented with spatial analysis results, and the study is accompanied by examples of results and findings achieved with practical measurements in halls.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110740"},"PeriodicalIF":3.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834244","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

Two-dimensional wave structure analysis of SH-like guided waves in finite cross-section waveguide 有限截面波导中sh型导波的二维波结构分析

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-14 DOI: 10.1016/j.apacoust.2025.110724

Guofu Zhai , Songtao Hu , Zhichao Li , Xiuzhong Gong , Chao Lu

{"title":"Two-dimensional wave structure analysis of SH-like guided waves in finite cross-section waveguide","authors":"Guofu Zhai , Songtao Hu , Zhichao Li , Xiuzhong Gong , Chao Lu","doi":"10.1016/j.apacoust.2025.110724","DOIUrl":"10.1016/j.apacoust.2025.110724","url":null,"abstract":"<div><div>Finite cross-section components are widely used in infrastructure construction, such as rail and flat steel. The traditional infinite plate theory cannot describe the wave structures in the finite cross-section waveguide. In this study, the wave structures of the SH-like guided waves are analyzed theoretically, which show that there are two-dimensional wave structures in the finite cross-section waveguide. Based on wave finite element method (WFEM) and displacement constraints, the dispersion curve for SH-like guided wave in a rectangular plate is obtained. The two-dimensional wave structures of SH-like guided waves are calculated, and the particle vibrations of different SH-like guided wave modes are analyzed. The excitation method of different modes was designed by using multiple periodic-permanent-magnet electromagnetic acoustic transducers (PPM EMATs). Four modes of SH-like guided waves are generated, and the frequency-wavenumber domain analysis of the experimental signals is carried out to verify dispersion curves of different modes. Results show that some 2DFFT results of experimental signals are offset from the dispersion curves, and some of them agree well with the dispersion curves. Further studies show that the offset of the 2DFFT results is due to the strong Lamb wave generated by the three-dimensional deformation, and the coupling of Lamb wave and SH-like guided waves forms a coupled wave with multiple vibration directions. These findings provide a basis for understanding the wave structures in finite cross-section waveguides and using SH-like guided waves to detect finite cross-section components.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825464","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

Objective and subjective acoustic assessment of music halls with passive variable systems: a case of Bilkent Music Hall 被动变量系统音乐厅的客观与主观声学评价：以比尔肯特音乐厅为例

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-14 DOI: 10.1016/j.apacoust.2025.110720

Aslı Altun , Zühre Sü Gül

{"title":"Objective and subjective acoustic assessment of music halls with passive variable systems: a case of Bilkent Music Hall","authors":"Aslı Altun , Zühre Sü Gül","doi":"10.1016/j.apacoust.2025.110720","DOIUrl":"10.1016/j.apacoust.2025.110720","url":null,"abstract":"<div><div>In concert halls, the need for variable acoustics arises from the diverse requirements of different musical performances. Previous research suggests that incorporating passive variable acoustic solutions can help venues adapt to various musical needs. This research explores the challenges and potentials of passive variable techniques in symphonic music halls, focusing on Bilkent Music Hall in Ankara − the main venue for Bilkent Symphony Orchestra (BSO) and an early example of variable acoustic systems in Türkiye. Acoustical field measurements were conducted within the hall to test different configurations of passive variable system. Later, subjective data is gathered through questionnaires and online surveys conducted with BSO members, faculty and students from the Bilkent Music Conservatory. Excessive low-frequency absorption is identified as a major acoustical problem of the hall. Thus, the final step involves acoustical simulations to evaluate a proposed design intervention aimed at improving acoustical comfort for different music performances. The hall’s existing variable acoustic system is investigated across a variety of musical performances, including chamber music, orchestral music, orchestral music with choir and vocal accompaniment, solo recitals, and occasional speech-oriented activities. This analysis provides valuable insights into musicians’ acoustical experiences and preferences regarding the music hall. The objective and subjective findings are then compared with precedent cases from around the world with variable acoustics systems.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110720"},"PeriodicalIF":3.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825770","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

Enhancing long-distance speech signals using PDMA speech enhancement system 利用PDMA语音增强系统增强远距离语音信号

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-14 DOI: 10.1016/j.apacoust.2025.110736

Tao Zhang, Rongze Xia, Heng Wang, MD Sazzad Hossen, Yanzhang Geng

{"title":"Enhancing long-distance speech signals using PDMA speech enhancement system","authors":"Tao Zhang, Rongze Xia, Heng Wang, MD Sazzad Hossen, Yanzhang Geng","doi":"10.1016/j.apacoust.2025.110736","DOIUrl":"10.1016/j.apacoust.2025.110736","url":null,"abstract":"<div><div>In long-distance scenarios, the energy of speech signals rapidly attenuates with increasing propagation distance. Traditional acquisition devices alone find it challenging to capture weak speech signals. Even when acoustic amplification is used, the low signal-to-noise ratio (SNR) renders traditional speech enhancement methods ineffective. To address this challenge, this paper proposes a speech enhancement system that integrates both acquisition hardware and back-end algorithms. Specifically, the hardware module of the system consists of a parabolic reflector designed to amplify the sound pressure and a differential microphone array aimed at suppressing noise interference. Complementing this, the algorithmic component employs a deep-learning-based Generative Filter Summation Network (GfsNet), which effectively integrates signals captured from these two hardware modalities, thereby significantly improving speech quality. Simulation and comparative experimental results show that the proposed algorithm can achieve 8.43 dB SNR gain in part of the test for the presence of multiple noise interference sources in the long-distance scene from 10 meters to 80 meters. The Speech quality (PESQ) is improved to 3.12, and the intelligibility (STOI) is improved to 0.57 under the best conditions. The proposed system shows excellent enhancement results in complex and multiple noise source environments.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110736"},"PeriodicalIF":3.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829659","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

Tyre/road noise modelling through equivalent monopoles: source strengths identification based on experimental acoustic transfer functions 基于等效单极子的轮胎/道路噪声建模：基于实验声学传递函数的声源强度识别

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-12 DOI: 10.1016/j.apacoust.2025.110719

Samanta Dallasta , Luca Rapino , Francesco Ripamonti , Simone Baro , Roberto Corradi

{"title":"Tyre/road noise modelling through equivalent monopoles: source strengths identification based on experimental acoustic transfer functions","authors":"Samanta Dallasta , Luca Rapino , Francesco Ripamonti , Simone Baro , Roberto Corradi","doi":"10.1016/j.apacoust.2025.110719","DOIUrl":"10.1016/j.apacoust.2025.110719","url":null,"abstract":"<div><div>At typical driving speeds, the primary source of vehicle exterior noise is the interaction between the tyre and the road. The introduction of tyre noise regulations has led to a growing interest in developing tyre designs that reduce the emitted noise. In this context, this paper presents an experimental approach to modelling tyre/road noise through equivalent monopole sources. The equivalent monopoles are synthesized from tyre rolling noise measurements conducted on a test rig equipped with a road replica in a semi-anechoic chamber. Additionally, acoustic transfer functions are evaluated using an omnidirectional acoustic source that allows an accurate representation of the test environment. The experimental setup and measurement procedure are described. The synthesized monopoles are used to evaluate the noise radiated by the rolling tyre at additional locations to validate the methodology. The approach is tested on four sets of tyres to assess its applicability to different tyre structures, sizes and tread patterns. Finally, the effectiveness of the equivalent source model in evaluating the relative noise levels of different tyre sets is determined by comparison with the experimental measurements.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110719"},"PeriodicalIF":3.4,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820975","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

Experimental and theoretical analysis for improvement of heavy-weight impact sound insulation of dry-type double floor structure using heavy/soft impact source 采用重/软冲击源改善干式双层结构重冲击隔声性能的实验与理论分析

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-12 DOI: 10.1016/j.apacoust.2025.110723

Da Cao , Yu Aida , Naohisa Inoue , Tetsuya Sakuma

{"title":"Experimental and theoretical analysis for improvement of heavy-weight impact sound insulation of dry-type double floor structure using heavy/soft impact source","authors":"Da Cao , Yu Aida , Naohisa Inoue , Tetsuya Sakuma","doi":"10.1016/j.apacoust.2025.110723","DOIUrl":"10.1016/j.apacoust.2025.110723","url":null,"abstract":"<div><div>The dry-type double floor structure is commonly installed in Japanese apartments. However, the heavy-weight impact sound insulation is often deteriorated due to the resonance effect of the air layer between the floor panels and the concrete slab. This study introduces a theoretical 3-degree-of-freedom (3-DOF) model to investigate the improvement of impact sound insulation for the double floor structure using rubber ball. First, a SDOF model for the collision of rubber ball is proposed that can reproduce the impact force exposure level accurately. Then, an experimental analysis is conducted using a specimen with particle board and support legs to obtain the support leg stiffness. It is validated that the proposed model for support legs can reproduce their transfer force characteristics accurately. Finally, the parametric study is performed to investigate the effects of varying support leg stiffness, air layer thickness, and floor panel density on the improvement of heavy-weight impact sound insulation. The results can be used to optimize the double floor structures to achieve better sound environment in residential buildings.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110723"},"PeriodicalIF":3.4,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823697","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 extended iterative filtering and composite multiscale fractional-order Boltzmann-Shannon interaction entropy for rolling bearing fault diagnosis 基于扩展迭代滤波和复合多尺度分数阶Boltzmann-Shannon交互熵的滚动轴承故障诊断

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-11 DOI: 10.1016/j.apacoust.2025.110699

Youming Wang, Kai Zhu, Xianzhi Wang, Gaige Chen

{"title":"An extended iterative filtering and composite multiscale fractional-order Boltzmann-Shannon interaction entropy for rolling bearing fault diagnosis","authors":"Youming Wang, Kai Zhu, Xianzhi Wang, Gaige Chen","doi":"10.1016/j.apacoust.2025.110699","DOIUrl":"10.1016/j.apacoust.2025.110699","url":null,"abstract":"<div><div>Feature extraction remains a challenging task in bearing fault diagnosis due to the presence of nonlinearity, nonstationarity, and noise interference. To address this issue, an extended iterative filtering and composite multiscale fractional-order Boltzmann-Shannon interaction entropy (EIF-CMFBSIE) are proposed for for rolling bearing fault diagnosis in complex environments. First, an EIF method is proposed to decompose the vibration signal into multiple intrinsic mode functions (IMFs) by extending the lengths of both ends of the signal through waveform matching. Second, multi-scale coarse-graining is applied to each IMF, fractional-order Boltzmann-Shannon interaction entropy (FBISE) is computed for each coarse-grained sequence by incorporating fractional-order parameters, and CMFBSIE is obtained through composite averaging to construct a multi-dimensional fault feature set. Next, the joint approximate diagonalization of eigenmatrices (JADE) method is employed to eliminate redundant information and fuse the fault features. The fused feature sets are then input into the kernel extreme learning machine (KELM) classifier for multi-fault identification. The proposed EIF-CMFBSIE method demonstrates excellent performance in analyzing the nonlinear dynamic complexity and irregularity of vibration signals in noisy environments. In the fault diagnosis tests based on three bearing simulation test benches, compared with the existing five fault diagnosis methods, the recognition accuracy of EIF-CMFBSIE is increased by 13.33%, and there is a significant advantage in computational efficiency, in which the EIF shortens the decomposition time by 65–96% compared with the existing methods. The experimental results indicate that the method can not only accurately identify different fault types and the degree of faults, but also has a short calculation time and better overall performance.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110699"},"PeriodicalIF":3.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817603","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-frequency bandgap broadening of single-phase shuriken-like acoustic metastructure through coupling design for sound insulation 通过隔声耦合设计实现单相疏形声元结构低频带隙展宽

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-10 DOI: 10.1016/j.apacoust.2025.110725

Dongxu Guo , Xiaolong Zhang , Ruilan Tian , Luqi Chen

{"title":"Low-frequency bandgap broadening of single-phase shuriken-like acoustic metastructure through coupling design for sound insulation","authors":"Dongxu Guo , Xiaolong Zhang , Ruilan Tian , Luqi Chen","doi":"10.1016/j.apacoust.2025.110725","DOIUrl":"10.1016/j.apacoust.2025.110725","url":null,"abstract":"<div><div>Sound insulation has long been a prosperous subject with practical interest because it can reduce severe noise from moving vehicles. In this study, a single-phase shuriken-like acoustic metamaterial (SSAM) is proposed to broaden the low-frequency bandgap through gradient coupling design. Based on Bloch's theorem and finite element simulation method, the dispersion relation and transmission are studied, and the influence of structural geometric parameters on bandgap is investigated. The widest bandgap can reach 197.55 Hz, and the lowest frequency can be reduced to 54.96 Hz. Several combinations of metastructures with low-frequency continuous bandgap are constructed by gradient and hybrid coupling design for the SSAM structures. The calculated transmission in the frequency range of 1 to 10000 Hz showed an excellent increase in effective and perfect attenuation width. The influence of geometric configuration and parameters on the trend of the bandgap is qualitatively analyzed by combining the local resonance mechanism and an effective mass-spring system. The insertion loss (<em>IL</em>) of SSAM is obtained through numerical simulation, which is verified by the experiment. The experimental results show that the SSAM exhibits a high-pitched <em>IL</em> value of 24.9 dB at 870 Hz. These results indicate that the proposed SSAM configuration with distributed masses and periodical arrangement can realize a good broadband sound transmission loss (<em>TL</em>) by decreasing the opening frequencies of bandgaps. The proposed strategy of single-phase structural coupling designs facilitates the use of large-scale low-frequency noise canceling efficiently, promoting its potential engineering application. This work provides a new and effective method for generating wide bandgaps of honeycomb structures in complex low-frequency noise environments.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110725"},"PeriodicalIF":3.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817601","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

Circular statistics vector for improving phase shift migration imaging of wrinkles in composites using ultrasonic array 圆形统计矢量改进复合材料褶皱超声阵列相移偏移成像

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-04-10 DOI: 10.1016/j.apacoust.2025.110727

Haiyan Zhang , Shuqian Liu , Hui Zhang , Yiting Chen , Jinfeng Si , Ma Shiwei , Qi Zhu

{"title":"Circular statistics vector for improving phase shift migration imaging of wrinkles in composites using ultrasonic array","authors":"Haiyan Zhang , Shuqian Liu , Hui Zhang , Yiting Chen , Jinfeng Si , Ma Shiwei , Qi Zhu","doi":"10.1016/j.apacoust.2025.110727","DOIUrl":"10.1016/j.apacoust.2025.110727","url":null,"abstract":"<div><div>Multilayer composites are essential for aerospace, automotive industry and medical devices, but subtle wrinkles inside will significantly impair its mechanical performance. The phase shift migration (PSM) algorithm is well-suited for imaging defects in multilayer composites due to its layer-by-layer wavefield extrapolation technique. However, it performs poorly for ultrasonic detection of wrinkles in composites because weak wrinkle echo signals are mixed and superimposed with the interlayer reflections, mechanical noise and multiple reflection waves. Based on the motivation, an imaging method of circular statistics vector factor weighted PSM (CSVF-PSM) is proposed. Firstly, the instantaneous phase of the received signal is extracted using the Hilbert transform. The cosine and sine components of the phase are abstracted into circular statistical vector (CSV). Secondly, the CSV factor (CSVF) in the frequency domain is constructed to characterize the phase distribution consistency at any pixel, which is multiplied by the original frequency domain matrix of PSM in the initial wavefield. Finally, by wavefield extrapolation, the wavefield at each layer is corrected with CSVF to obtain more accurate wavefield at different depths. The experimental results indicate that CSVF-PSM significantly improves computation efficiency compared to the conventional time-domain total focusing method (TFM) algorithm, with an improvement of at least 8.67 times. Besides, compared to PSM and sign coherence factor weighted phase shift migration (SCF-PSM), the CSVF-PSM improves the imaging clarity and texture contrast for subtle wrinkles, with the error less than 10% for the wrinkle angle detection.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"236 ","pages":"Article 110727"},"PeriodicalIF":3.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817602","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