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Nonlinear fields of focused acoustic-vortex beams Appl. Acoust. (IF 3.4) Pub Date : 2024-04-10 Ge-pu Guo, Xiao-fei Li, Zhen-hua Chen, Ting-hui Meng, Yu-zhi Li, Qing-yu Ma
Benefiting from the excellent performance of energy focusing and orbital angular momentum (OAM) transferring, the focused acoustic-vortex (FAV) exhibits promising application potentials in particle manipulations. However, the harmonic impact on the mechanical, thermal and cavitation effects cannot be ignored when the peak pressure exceeds MPa level. Few studies on the calculation, analysis and application
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Least Mean Square/Fourth Adaptive algorithm for excision of ocular artifacts from EEG signals Appl. Acoust. (IF 3.4) Pub Date : 2024-04-10 Sridhar Chintala, Murla Bhumi Reddy, Srihari Gude, Damodar Reddy Edla, Banoth Ravi
Electroencephalogram (EEG) activities in the frontal area are profoundly influenced by non-cerebral activities such as electrooculogram (EOG) signals. In this work, we suggest the Least Mean Square-Fourth (LMS/F) adaptive method as a noise canceler to get rid of eye artifacts from raw EEG data. In this case, we make separate recordings of the reference signals such as the horizontal EOG and the vertical
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Helmholtz resonator coupled with circular membrane Appl. Acoust. (IF 3.4) Pub Date : 2024-04-10 Munhum Park, Kajornpop Toboonchuay, Pairoj Rattanangkul
The Helmholtz resonator is an old yet highly versatile model of various structures. The conventional form of this resonator with rigid surfaces has been extensively studied, and its characteristics are well understood. In many cases, however, the resonator consists of flexible surfaces that readily respond to the changes in the cavity volume, where recent examples include the base structures for acoustic
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Validating Thai translations of perceptual soundscape attributes: A non-Procrustean approach with a Procrustes projection Appl. Acoust. (IF 3.4) Pub Date : 2024-04-10 Karn N. Watcharasupat, Kenneth Ooi, Bhan Lam, Zhen-Ting Ong, Sureenate Jaratjarungkiat, Woon-Seng Gan
Measurement of a psychological construct across populations without a common linguistic medium often necessitates the development of multiple translations of the psychometric tool across multiple languages, dialects, or other population-specific variations. In this follow-up (Stage 2) study, a listening test using a shared set of 27 stimuli from the Soundscape Attribute Translation Project (SATP) was
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A physics-based PSO-BPNN model for civil aircraft noise assessment Appl. Acoust. (IF 3.4) Pub Date : 2024-04-09 Hao Feng, Yadong Zhou, Weili Zeng, Wentao Guo
With the increasingly severe problem of aircraft noise pollution around airports, it is urgent to explore accurate and effective aircraft noise assessment methods. This article proposes a physics-based PSO-BPNN model based on the European Civil Aviation Conference (ECAC) best practice model, backpropagation neural network (BPNN), and particle swarm optimization (PSO) to enrich the methodology system
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Characteristics of cross-correlation function for receivers at large depths and its application on broadband pulse source localization Appl. Acoust. (IF 3.4) Pub Date : 2024-04-08 Ziyang Li, Shengchun Piao
The characteristics of cross-correlation function for two receivers at different depths in deep sea are analyzed. For the receivers near the surface, peaks in the cross-correlation function are close to the main peak, which is difficult to be distinguished, and their positions change minor with variation in source range and depth. While at large depths, the peaks beyond the main peak are separate and
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Multipath DOA based MIMO beamforming receiver scheme for high-rate underwater acoustic communications Appl. Acoust. (IF 3.4) Pub Date : 2024-04-08 Tong Li, Feng Zhou, Lu Ma, Xinyu Liu, Muhammad Muzzammil
Underwater acoustic (UWA) channels exhibit a sparse multipath structure, with each path having its corresponding direction of arrival (DOA). Conventional MIMO receivers process received signals hydrophone by hydrophone, disregarding the angle domain information. This paper presents a MIMO beamforming receiver for UWA communications. The proposed method estimates DOAs of multipath signals firstly, then
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Underwater reverberation suppression method by the symmetry of signal and centrosymmetric arrays Appl. Acoust. (IF 3.4) Pub Date : 2024-04-08 Xingyuan Pei, Xiaochuan Ma, Xuan Li, Yubin Fu
Reverberation is a key limitation factor for improving sonar detection performance. In this paper, a novel method taking advantage of the symmetrical signal which is named Flip Array Conventional Beamforming method is proposed to suppress reverberation. First, in centrosymmetric arrays, the array-time-flipped snapshot matrix is constructed by rotating the temporal snapshot matrix of the centrosymmetric
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Improvement of broadband low-frequency sound absorption and energy absorbing of arched curve Helmholtz resonator with negative Poisson’s ratio Appl. Acoust. (IF 3.4) Pub Date : 2024-04-06 Weifan Kong, Tao Fu, Timon Rabczuk
A negative Poisson's ratio arc curve Helmholtz resonator structure is proposed to address the difficulty of achieving perfect low-frequency absorption in traditional absorbing structures at ultra-subwavelength scales for subaqueous low-frequency sound waves. The shape of the embedded tube is designed as a circular tube and a regular hexagonal tube, with the two shapes symmetrically distributed about
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The impact of outdoor soundscapes at nursing homes on physiological indicators in older adults Appl. Acoust. (IF 3.4) Pub Date : 2024-04-06 Xiaojie Long, Yuliang Lei, Norhayati Mahyuddin, Nazli Che Din
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Insert loss experiment and acoustic impedance theoretical study on the noise barrier with MPP-QRD top structure Appl. Acoust. (IF 3.4) Pub Date : 2024-04-05 Ming Qin, Junjie Wang, Qiyin Deng, Jun Cai
The effective edge processing is the key to the performance of noise barrier. To prevent the sound diffraction within the low-medium frequency range, the quadratic residue diffuser (QRD) was combined with microperforated panel (MPP) in this study. The impedance of MPP with different parameters and QRD structure with N = 7 was calculated respectively and the matching degree of the composite structure
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Personalized prediction of speech intelligibility for hearing-impaired listeners using a physiological model of the human ear Appl. Acoust. (IF 3.4) Pub Date : 2024-04-04 Yinxin Kou, Wei Chen, Jie Wang, Wen Liu, Shanguo Yang, Houguang Liu
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SDFIE-NET – A self-learning dual-feature fusion information capture expression method for birdsong recognition Appl. Acoust. (IF 3.4) Pub Date : 2024-04-04 Qin Zhang, Shipeng Hu, Lu Tang, Rui Deng, Choujun Yang, Guoxiong Zhou, Aibin Chen
Bird recognition is important for the monitoring of bird populations and the protection of ecosystems. Identifying birds through image forms can be difficult due to the complexity of natural environments. Song-based bird recognition allows for bird identification with only a small amount of background noise introduced, however, efficiently recognizing bird songs remains a challenging task. Based on
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Influences of parameters of film on acoustical absorption performance of copper film-copper fiber composite structure Appl. Acoust. (IF 3.4) Pub Date : 2024-04-04 Jiyang Zhang, Tingying Zhang, Hao Li, Ying Xu, Kean Chen
Fiber porous materials excel at sound absorption, but their effectiveness suffers at thin thicknesses. This study proposed a novel copper film-copper fiber porous material (FFM) structure to overcome this limitation. We designed a composite material with improved sound absorption, by coating a thin copper film onto an existing copper fiber matrix. This innovative approach enables effective sound absorption
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Analytical modeling of harmonically driven focused acoustic sources with experimental verification Appl. Acoust. (IF 3.4) Pub Date : 2024-04-04 Tomasz Zawada, Torsten Bove
Recently, a high intensity focused ultrasound (HIFU) is drawing a lot of attention from medical and non-medical fields due to its potential for extreme high pressure levels as well as ultra high spatial resolution. At the heart of every HIFU system is a focused ultrasound transducer, and its electrical and acoustic properties play a key role. During the transducer design phase, it is important to quickly
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Influence of virtual audio system on psychological restoration effects of soundscapes: Investigating water sounds of a Chinese classical garden Appl. Acoust. (IF 3.4) Pub Date : 2024-04-03 Xian Shi, Zhenyu Guo, Yuezhe Zhao
Various sound recording and reproduction methods were utilized to create virtual replicas of soundscapes and restoration effects of soundscapes were examined in studies. The reproduction quality of different virtual audio systems may impact the restoration effect of soundscapes. However, only a limited number of studies have conducted experiments to explore these influences. In this study, five water
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Parallel-coupled hierarchical and reconfigurable structure for broadband sound absorption Appl. Acoust. (IF 3.4) Pub Date : 2024-04-01 Zhongjian Mei, Yadong Lyu, Xiaodong Li, Xiaobin Cheng, Jun Yang
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Geometric optimisation of a multiple coiled-up resonator for broadband and octave band acoustic absorption Appl. Acoust. (IF 3.4) Pub Date : 2024-03-30 Cristina Marescotti, Francesco Pompoli
This study presents a comprehensive approach to designing sound absorption metamaterials, aiming to achieve broadband absorption capabilities while maintaining a compact thickness, starting from an exceptionally low frequency of 100 Hz. By employing a parallel arrangement of resonators with varying lengths, the proposed approach exploits the envelopes of absorption frequencies to realize broad-spectrum
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A PGC demodulation scheme based on the Lissajous ellipse fitting for homodyne interferometer without using second harmonic carrier signal Appl. Acoust. (IF 3.4) Pub Date : 2024-03-29 Lieshan Zhang, Wu Xiao, Wenjun Fang
This paper proposes a phase generated carrier (PGC) demodulation scheme for sinusoidal phase modulation interferometer (SPMI) that does not require a second harmonic carrier signal. In this scheme, an in-phase interference signal component with direct current (DC) bias is obtained by low-pass filtering the original interference signal, and a quadrature interference signal component is obtained by conventional
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Multipole transfer matrix model-based sparse Bayesian learning approach for sound source identification Appl. Acoust. (IF 3.4) Pub Date : 2024-03-29 Wei Pan, Long Wei, Daofang Feng, Youtai Shi, Yan Chen, Min Li
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Environmental Impact by Air Traffic: Assessing aircraft noise nearby Hong Kong International Airport Appl. Acoust. (IF 3.4) Pub Date : 2024-03-29 Chunhui Wu, Ngai Nam Thomas Chan, Stephane Redonnet
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Experimental study of the noise suppression of supersonic impinging jets with chevrons Appl. Acoust. (IF 3.4) Pub Date : 2024-03-27 Bao Chen, Weipeng Li, Fei Wu, Zhengwu Chen
Supersonic impinging jets may cause many adverse ground effects, including surface erosion, nonuniform surface heat transfer, lift loss, and acoustic loading. In this study, chevron nozzles are used to suppress the noise generation of supersonic impinging jets originated from a circular convergent nozzle with the jet Mach number of 1.2. An array of microphones is used to measure the far-field acoustic
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Quantification of impedance and mechanical properties of Zeonor using scanning acoustic microscopy Appl. Acoust. (IF 3.4) Pub Date : 2024-03-27 Shivam Ojha, Komal Agarwal, Amit Shelke, Anowarul Habib
This article explores the potential of Zeonor, a transparent cyclic olefin polymer, for applications in transparent acoustic/photo-acoustic transducers. Despite its widespread use in optics, microfluidics, medical devices, and electronics, Zeonor's acoustic properties remain understudied. To extend this, the current work employs scanning acoustic microscopy (SAM) to obtain its mechanical properties
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Experimental comparisons of speech transmission index prediction methods Appl. Acoust. (IF 3.4) Pub Date : 2024-03-27 Peisheng Zhu, Wanqi Tao, Fangshuo Mo, Xiaodong Lu, Hongchi Zhang
Good speech intelligibility is the primary goal of acoustic environment control in lecture rooms and auditoria. The speech transmission index (STI) is the primary objective evaluation metric for speech intelligibility. Therefore, accurate prediction of the STI during the design stage is important for acoustic environment control in lecture rooms and auditoria. Two types of STI prediction methods based
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An acoustic impedance design method for tubular structures with broadband sound insulations and efficient air ventilation Appl. Acoust. (IF 3.4) Pub Date : 2024-03-27 Ding-Kai Lin, Xi-Wen Xiao, Chieh-Cheng Yang, Sheng-Yu Ho, Li-Chih Chou, Che-Hsien Chiang, Jung-San Chen, Chien-Hao Liu
In this research, we proposed an acoustic impedance-based design method to increase the soundproofing bandwidths and maintain efficient air ventilation for tubular structures consisting of hollow air-flowing channels. This research has great potential to provide design guidelines based on an acoustic impedance model and even/odd mode analysis for hollow-tube ventilated devices containing resonance
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Performance study and improvement of space-folded metamaterial muffler for pipe under grazing flow Appl. Acoust. (IF 3.4) Pub Date : 2024-03-26 Dacheng Zhang, Xiaoming Su, Yumeng Sun, Yuanqing Luo, Xianming Sun, Changzheng Chen
A space-folded metamaterial muffler (SMM) for pipe noise attenuation was proposed in this paper, and an improved space-folded metamaterial muffler (ISMM) was formed by arranging wire meshes at the branch inlet. Under the absence of flow and grazing flow, analytical models of SMM and ISMM were developed based on the wave expansion method and Green's function, and correspondingly, the computational fluid
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“You don't sound well, you should take the day off”: Automatic detection of upper respiratory tract infections from speech using time-frequency domain deep convolutional neural network Appl. Acoust. (IF 3.4) Pub Date : 2024-03-26 Pankaj Warule, Siba Prasad Mishra, Suman Deb, Jarek Krajewski
The acoustic-prosodic qualities of a speech signal are influenced by various health-related factors, owing to their complex and intricate nature. In the speech and health domain, machine learning research is active and expanding, with a focus on devising paradigms to objectively extract and measure such effects. The field of biomedical engineering has great promise in the development of non-invasive
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An investigation on synergistic resonances of membrane-type acoustic metamaterial with multiple masses Appl. Acoust. (IF 3.4) Pub Date : 2024-03-23 Chenxv Du, Shichao Song, Honglei Bai, Jianing Wu, Kun Liu, Zhenbo Lu
Membrane-type acoustic metamaterials (MAM) represent a class of materials that are lightweight, compact, structurally simple, and simultaneously offer flexibility and moldability, all while demonstrating exceptional sound attenuation properties in the low-frequency range. As a continuation, this study focuses on membrane-based acoustic metamaterials with synergistic resonance of multiple loaded mass
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AUV instantaneous velocity estimation method based on azimuth and Doppler shift Appl. Acoust. (IF 3.4) Pub Date : 2024-03-22 Jin Fu, Qingyu Zhang, Nan Zou, Bin Qi, Jing Li
Autonomous underwater vehicle (AUV), as a new underwater operation platform, has been widely used in the field of ocean engineering. AUV underwater condition monitoring is an important guarantee for the safety and effective execution of AUV operations. To meet the requirement of real-time and high-precision underwater instantaneous velocity monitoring of AUV, this paper proposed an AUV instantaneous
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A non-invasive short range acoustic technique for liquid level measurement in containers Appl. Acoust. (IF 3.4) Pub Date : 2024-03-20 Rajendra P. Palanisamy, Luis A. Chavez, Alexa B. Hanson, George S. Goff, Alp T. Findikoglu
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E-DOCRNet: A multi-feature fusion network for dog bark identification Appl. Acoust. (IF 3.4) Pub Date : 2024-03-19 Rui Deng, Guoxiong Zhou, Lu Tang, Choujun Yang, Aibin Chen
Dog bark is the most commonly used communication method of dogs. Human ear has difficulty in distinguishing information in dog bark, while deep learning methods rises recognition accuracy and efficiency. However, there exists information loss during the process of feature extraction. Aiming at this problem, this paper proposed a lightweight multi-feature fusion network E-DOCRNet. The network is composed
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Metasurfaces for sound absorption over a broad range of wave incidence angles Appl. Acoust. (IF 3.4) Pub Date : 2024-03-18 Diana Maria Garza-Agudelo, Vicente Cutanda Henriquez, Cheol-Ho Jeong, Peter Risby Andersen, Martin Ibarias, José Sanchez-Dehesa, Frieder Lucklum
Control of reflected waves that meet surfaces from oblique directions is crucial, for instance, in closed spaces. Metasurfaces composed of Helmholtz resonators can be efficient and compact absorbers but have limited ability to achieve high absorption over a wide incidence angle range, especially when designed for high performance in the region approaching grazing incidence. In turn, sonic crystals
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Assessment of the sound reduction index provided by noise barriers with low sound insulation Appl. Acoust. (IF 3.4) Pub Date : 2024-03-16 Jaime Galiana Nieves, Rubén Picó, Romina Del Rey, Jesús Alba, Javier Redondo
In the realm of environmental noise control, the emergence of metamaterial-based acoustic barriers, such as sonic crystal noise barriers (SCNBs), represents a significant innovation due to their unique ability to manipulate sound waves. Despite their growing popularity, accurately assessing their efficacy remains a challenge. In one of the current standard methods, as outlined in EN 1793-2:2012, overestimates
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A multizone sound field reproduction method with constrained zone acoustic energy in the modal domain Appl. Acoust. (IF 3.4) Pub Date : 2024-03-16 Xin Wen, Haijun Wu, Yilong Fan, Weikang Jiang
Multizone sound field reproduction for synthesizing desired sound fields has various applications. The modal matching-based method can obtain global modal coefficients to accurately reproduce the desired sound field. However, the transformation of the global modal coefficients into the loudspeaker weights for reproduction is susceptible to the ill-conditioned transformation matrix that caused by loudspeaker
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Freeze-cast porous Al2O3/MgO ceramics as potential acoustic sound absorption Appl. Acoust. (IF 3.4) Pub Date : 2024-03-14 T.S. da N. Guenka, M.R. Machado, A.M.A. Silva, M.A.A. Nunes
In acoustic engineering and architecture, materials called acoustic absorbers are widely used. There are currently numerous options for such materials, and many more are being researched. This study is conducted on porous ceramics produced via the freeze-casting process to propose new solutions with unique properties, like resistance to harsh environments. The freeze-casting method allows for the controlled
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Efficient modelling of surface roughness effects in additively manufactured materials Appl. Acoust. (IF 3.4) Pub Date : 2024-03-14 Agnieszka Ciochon, John Kennedy
3D printing defects are often used to explain the mismatch between numerical predictions and experimental results of additively manufactured acoustic materials. Although they are often perceived as desirable, as in most cases, they improve the absorptive behaviour of the system, occurring gains are unplanned and uncontrollable. Among different 3D printing inaccuracies, surface roughness provides additional
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Investigating the dispersion characteristics of symmetric and asymmetric modes in rails: A theoretical and experimental study Appl. Acoust. (IF 3.4) Pub Date : 2024-03-14 Xicheng Feng, Ping Wang, Jingmang Xu, Chenyang Hu, Yao Qian
The propagation law of ultrasonic guided waves in waveguide structures is determined by their dispersion characteristics, and the number of guided waves in symmetric and antisymmetric modes in rails is significant, so the dispersion characteristics are very complex. In order to study the dispersion characteristics of symmetric and antisymmetric modes in rails, this paper derives the wave equation based
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Experimental investigation of vibro-acoustic noise analysis in the switched reluctance motor through transient model-based multiphysics analysis for electric vehicles applications Appl. Acoust. (IF 3.4) Pub Date : 2024-03-13 Pemmareddy Saiteja, Bragadeshwaran Ashok
The SR motor is acquiring popularity due to its dynamic characteristics such as higher power, torque, and efficiency. Even though, Vibro-acoustic noise is a significant issue in SR motors, which are caused by radial electromagnetic forces. This research adopted a novel methodology to investigate the various vibro-acoustic noise sources to enhance the performance of real-time SR motors. This methodology
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A machine learning approach for predicting the Johnson-Champoux-Allard parameters of a fibrous porous material Appl. Acoust. (IF 3.4) Pub Date : 2024-03-12 Wei Yi, Jingwen Guo, Teng Zhou, Hanbo Jiang, Yi Fang
Porous fibrous materials have been widely used as acoustic treatments for noise attenuation. Their acoustic properties are typically characterized by Johnson-Champoux-Allard (JCA) model, which includes five dominant parameters, i.e., open porosity, flow resistivity, tortuosity, viscous characteristic length, and thermal characteristic length. The JCA parameters depend on the microstructure configuration
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Adaptive minimum noise amplitude deconvolution and its application for early fault diagnosis of rolling bearings Appl. Acoust. (IF 3.4) Pub Date : 2024-03-12 Xuyang Xie, Lei Zhang, Jintao Wang, Guobing Chen, Zichun Yang
To address the challenge of detecting early faults in rolling bearings, where weak fault features are occasionally obscured by background noise, an innovative early fault diagnosis method based on adaptive minimum noise amplitude deconvolution (MNAD) is introduced. Initially, a correlation Gini index function is defined to estimate the fault period, while leveraging the iterative advantages of MNAD
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Wood chip sound absorbers: Measurements and models Appl. Acoust. (IF 3.4) Pub Date : 2024-03-10 Maedeh Lashgari, Ebrahim Taban, Mohammad Javad SheikhMozafari, Parham Soltani, Keith Attenborough, Ali Khavanin
Normal incidence absorption coefficient spectra of samples made from glued wood chips have been measured for various mesh sizes, bulk densities, thicknesses, and air gaps. Increasing thickness introduces additional layer resonance peaks and shifts the initial peak towards lower frequencies. The wood chip samples composed of the smallest mesh sizes were found to offer the highest sound absorption, comparable
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Effect of wind noise on active noise control headphones and wind noise suppression in distributed filtered-x least mean squares algorithms Appl. Acoust. (IF 3.4) Pub Date : 2024-03-10 Mingyang Chen, Yijing Chu, Yuezhe Zhao, Feng Niu, Haitao Sun
Wind noise has detrimental impacts on audio equipment. This paper evaluates the impact of wind noise on the noise control performance of ANC headphones in a variety of windy environments. The findings indicate that the noise reduction performance of headphones degrades as the wind speed increases. To improve the performance of ANC systems in windy environments, the diffusion filtered-x least mean squares
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A method of layout optimization for MFC actuators in active vibration control of composite laminates Appl. Acoust. (IF 3.4) Pub Date : 2024-03-08 Hui Zhang, Wei Sun, Haitao Luo, Jia Shen, Rongfei Zhang
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Bending damage behavior of 3D-C/C-TiC-Cu composite based on acoustic emission technology Appl. Acoust. (IF 3.4) Pub Date : 2024-03-08 Xianghong Wang, Xinlei Dong, Yonggang Tong, Hongwei Hu, Wenzheng Liu
In order to improve the matrix brittleness of carbon fiber reinforced ceramic matrix composites (CMCs), a new type of 3D-C/C-TiC-Cu CMC material is prepared by introducing high toughness Ti-Cu alloy. This study uses acoustic emission (AE) technology to investigate the damage process of the material under graded cyclic bending loading in order to study the mechanical properties of materials in parallel
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A method to estimate the rectangular orthotropic plate elastic constants using least-squares and Chladni patterns Appl. Acoust. (IF 3.4) Pub Date : 2024-03-08 Michele Ducceschi, Sebastian Duran, Henna Tahvanainen, Ludovico Ausiello
A method to retrieve the elastic constants of rectangular wooden plates is presented, relying on the measurement of a set of eigenfrequencies and the identification of the corresponding mode shapes, and belonging to the more general category of non-destructive inverse parameter estimation methods. Compared to previous work, the current method is effective with any choice of boundary conditions. Furthermore
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Numerical and experimental studies on the owl-inspired propellers with various serrated trailing edges Appl. Acoust. (IF 3.4) Pub Date : 2024-03-08 Yijuan Gu, Fuqiang Song, Honglei Bai, Jianing Wu, Kun Liu, Bowen Nie, Liangquan Wang, Zhizhou Zhang, Zhenbo Lu
The present study investigates owl-inspired propellers with various serrated trailing edge configurations. An analysis utilizes a numerical model that integrates computational fluid dynamics (CFD) with Large Eddy Simulation (LES) and Lighthill acoustic analogy. The simulation aims to clarify the mechanism behind noise reduction in the bionic propeller by comparing tip vortices and wake region vortices
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A high-performance conical-neck helmholtz resonator-based piezoelectric self-powered system for urban transportation Appl. Acoust. (IF 3.4) Pub Date : 2024-03-08 Pengfei Fan, Shangbo Wang, Xinheng Wang
As urbanization accelerates, the issue of traffic noise escalates. Efficiently harnessing this prevalent acoustic energy and facilitating its collection and conversion has emerged as a notable challenge in contemporary research. This paper introduces a piezoelectric self-powered system anchored on a Conical-Neck Helmholtz Resonator-Based Piezoelectric Self-Powered System (CNHR-PSS) which places the
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MGGSED-SSA: An improved sparse deconvolution method for rolling element bearing diagnosis Appl. Acoust. (IF 3.4) Pub Date : 2024-03-07 Peiming Shi, Shiming Gao, Hang Tan, Xuefang Xu, Ruixiong Li
Sparse deconvolution methods can not only adaptively design the filter to counteract the negative effect of the transmission path but also exhibit superior performance compared to traditional deconvolution methods based on kurtosis. Yet, determining the optimal filter length remains challenging, and there is still further study to be done on how to make sparse deconvolution methods work better under
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Nonlinear sound absorption of coiling-up space under high amplitude acoustic excitation Appl. Acoust. (IF 3.4) Pub Date : 2024-03-07 Wei Sun, Zhigang Chu, Yifeng Lang
In this paper, we investigate the nonlinear sound absorption of coiling-up space under high amplitude acoustic excitation with analytical method based on JCAL model, numerical simulation method based on finite element, and experimental methods based on impedance tube. The analytical model is established by analogy with porous material. The high incident sound pressure level (ISPL) causes acoustic vortices
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Gaussian processes with normal-mode-based kernels for matched field processing Appl. Acoust. (IF 3.4) Pub Date : 2024-03-06 Yining Liu, Runze Hu, Daowei Dou, Haiqiang Niu, Desheng Chen, Lijun Xu
The Gaussian processes (GPs) model the acoustic field in the ocean waveguide by exploiting the correlation of the acoustic field at different receiving depths. Therefore, for the measured acoustic field of a sparsely distributed array, the GPs can predict the dense field at the virtual receivers. The kernel function reflects the correlation of field measurements between different receiving depths.
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Mel frequency mapping for intelligent diagnosis of rolling element bearings across different working conditions Appl. Acoust. (IF 3.4) Pub Date : 2024-03-05 Yubin Yue, Hongjun Wang, Shenglun Zhang
The diagnosis of rolling bearing faults under constant operational conditions has garnered substantial scholarly interest, leading to the development of numerous robust and reliable diagnostic techniques. However, the dynamic and variable nature of industrial operating conditions complicates the acquisition of diagnostic data and renders fault prediction problematic, thus posing a formidable obstacle
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Evaluating and predicting the audibility of acoustic alarms in the workplace using experimental methods and deep learning Appl. Acoust. (IF 3.4) Pub Date : 2024-03-04 F. Effa, J.-P. Arz, R. Serizel, N. Grimault
Occupational noise exposure is a widespread concern, impacting millions of workers. The present research focuses on the audibility of acoustic alarms to ensure worker safety while minimizing exposure to unnecessarily high alarm levels. It introduces a laboratory experiment carried on normal-hearing participants to assess the perceived audibility of acoustic alarms in various workplace noise conditions
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Non-orthogonal pilot pattern design and sparse channel estimation for underwater acoustic MIMO-OFDM systems Appl. Acoust. (IF 3.4) Pub Date : 2024-03-04 Tong Li, Feng Zhou, Lu Ma, Hanbo Jia, Xinyu Liu, Muhammad Muzzammil
This paper proposes a novel non-orthogonal pilot pattern design method for underwater acoustic (UWA) multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) systems, leveraging compressive sensing (CS) channel estimation. This approach adopts the mutual incoherence property (MIP) and enhances pilot density without increasing pilot overhead. We conducted rigorous mathematical
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Sound mapping design of water features used over road traffic noise for improving the soundscape Appl. Acoust. (IF 3.4) Pub Date : 2024-03-02 Francesca M.A. Calarco, Laurent Galbrun
This paper examines the effectiveness of water features in masking noise and improving the soundscape, when used over road traffic noise. The work focused on identifying how appropriate sound pressure levels can be achieved from a variety of water sounds generated by small to medium sized features (waterfalls, fountains, jets, a cascade and a natural stream). Sound pressure levels were calculated using
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Effect of headphone-based stimuli presentation method on echo threshold Appl. Acoust. (IF 3.4) Pub Date : 2024-03-01 Teng Cao, Guangzheng Yu, Dan Rao
The echo threshold (ET), defined as the critical time delay from perceiving a single fused sound image to two spatially separated sound images in the presence of delayed stimuli, is the upper limit of precedence effect. In the ET measurements using headphones, the interaural time difference (ITD) stimuli presentation method is often employed. However, considering AR/VR scenarios, the virtual auditory
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Gearbox localized fault detection based on meshing frequency modulation analysis Appl. Acoust. (IF 3.4) Pub Date : 2024-02-29 Shaodan Zhi, Haikuo Shen, Tianyang Wang
Gearbox fault detection commonly relies on comparing sideband frequencies beside the meshing frequency of gear, and its harmonics of higher orders in frequency domain between the measured signal and healthy baseline. However, this type of localized fault detection algorithm is less intuitive and credible because other factors, such as manufacturing and assembly errors, can lead to similar sidebands
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Prediction and mitigation of building vibrations caused by train operations on concrete floors Appl. Acoust. (IF 3.4) Pub Date : 2024-02-29 Yitao Qiu, Chao Zou, Jiahao Hu, Jialiang Chen
The potential construction of an elevated metro depot incorporating commercial and residential facilities is being considered in order to optimize land utilization. The vibration generated by trains operating on the concrete floor poses an intriguing challenge, as it directly propagates through the load-bearing structure to the over-track buildings without undergoing soil attenuation. Consequently
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Tram noise annoyance: The role of different psychoacoustic measures in the assessment of noise Appl. Acoust. (IF 3.4) Pub Date : 2024-02-28 Tomasz Nowakowski, Paweł Komorski
Current environmental standards rely on A-weighted equivalent noise levels (L) or Single Event Level (SEL), which have limitations. This article presents the results of a study on tram noise annoyance in the context of different acoustic measures proposing a different approach to assessing traffic noise in the city. The main objective of the study was to understand how different noise measures may
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Speaker recognition using isomorphic graph attention network based pooling on self-supervised representation Appl. Acoust. (IF 3.4) Pub Date : 2024-02-28 Zirui Ge, Xinzhou Xu, Haiyan Guo, Tingting Wang, Zhen Yang
The emergence of self-supervised representation (i.e., wav2vec 2.0) allows speaker-recognition approaches to process spoken signals through foundation models built on speech data. Nevertheless, effective fusion on the representation requires further investigating, due to the inclusion of fixed or sub-optimal temporal pooling strategies. Despite of improved strategies considering graph learning and
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A fusion TFDAN-Based framework for rotating machinery fault diagnosis under noisy labels Appl. Acoust. (IF 3.4) Pub Date : 2024-02-28 Xiaoming Yuan, Zhikang Zhang, Pengfei Liang, Zhi Zheng, Lijie Zhang
Traditional fault diagnosis (FD) for rotating machinery solely based on vibration signals has problems such as inconvenient collection, low accuracy, and poor robustness. This article proposes a fusion framework based on tensor fusion and dual attention network (TFDAN), utilizing acoustic and vibration signals from two datasets of centrifugal pumps and cylindrical roller bearings. Firstly, continuous