Acoustics Australia最新文献_第6页

Antitragus Suppresses Fundamental Harmonic Pulse in a Horseshoe Bat, Rhinolophus Sinicus 反耳屏抑制马蹄铁蝙蝠的基本谐波脉冲

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-08-24 DOI: 10.1007/s40857-022-00278-1

Qiao Zhuang, Wen-Xiu Zhai, Fu-Xun Wang, Rui-Wen Kong

引用次数: 0

A Half-Analytical Method to Predict the Sound Absorption of Multiple Inhomogeneous Resonators Based on Sellers’ Method 基于塞勒法的多非均匀腔吸声半解析预测方法

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-08-09 DOI: 10.1007/s40857-022-00274-5

Chen Lu, Wenjiong Chen, Xiaopeng Wang, Shutian Liu

引用次数: 0

Mechanical and Acoustic Properties of Ceramsite Sound Absorbing Boards with Gradient Structure 梯度结构陶粒吸声板的力学与声学性能

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-08-07 DOI: 10.1007/s40857-022-00276-3

Kai Yang, Guangcheng Long, Zhuo Tang, Xiaoyan Pan, Weiqing Su, Youjun Xie

{"title":"Mechanical and Acoustic Properties of Ceramsite Sound Absorbing Boards with Gradient Structure","authors":"Kai Yang, Guangcheng Long, Zhuo Tang, Xiaoyan Pan, Weiqing Su, Youjun Xie","doi":"10.1007/s40857-022-00276-3","DOIUrl":"10.1007/s40857-022-00276-3","url":null,"abstract":"<div><p>In this work, ceramsite was utilized to fabricate the sound-absorbing boards, in which two types of structure were considered, specifically, single-layer board with homogenous structure and double-layer board with gradient structure. The physical, mechanical and acoustic properties of these prepared ceramsite sound absorbing boards were studied, including the bulk density, compressive strength, flexural strength, softening coefficient, sound absorption coefficient and sound reduction index. The results show that the double-layer board with appropriate\u0000mixture design\u0000exhibited almost identical bulk density and mechanical strength to the single-layer board. All ceramsite sound absorbing boards had compressive and flexural strengths of more than 3 MPa and 1 MPa, respectively, and also demonstrated good water resistance. In terms of sound absorption and sound insulation properties, the overall performance of the double-layer board with reasonable gradient structure was better than that of the single-layer board. In addition, the physical structure models of ceramsite sound absorbing boards were established to illustrate the variation of mechanical properties and disclose the mechanism of sound absorption and insulation in the material.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50012495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Self-Powered Acoustic Sensor Based on Triboelectric Nanogenerator for Smart Monitoring 基于摩擦电纳米发电机的自供电声传感器用于智能监测

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-08-05 DOI: 10.1007/s40857-022-00275-4

Yingzhe Li, Chaoran Liu, Sanshan Hu, Peng Sun, Lingxing Fang, Serguei Lazarouk, Vladimir Labunov, Weihuang Yang, Dujuan Li, Kai Fan, Gaofeng Wang, Linxi Dong, Lufeng Che

{"title":"Self-Powered Acoustic Sensor Based on Triboelectric Nanogenerator for Smart Monitoring","authors":"Yingzhe Li, Chaoran Liu, Sanshan Hu, Peng Sun, Lingxing Fang, Serguei Lazarouk, Vladimir Labunov, Weihuang Yang, Dujuan Li, Kai Fan, Gaofeng Wang, Linxi Dong, Lufeng Che","doi":"10.1007/s40857-022-00275-4","DOIUrl":"10.1007/s40857-022-00275-4","url":null,"abstract":"<div><p>Sound as a ubiquitous energy in our surroundings is clean and sustainable, and carries abundant information in a wide frequency bandwidth. However, effectively harvesting and utilizing acoustic energy is still hindered by the limitations such as low energy density of acoustic energy and lack of novel application. In this paper, we successfully present a self-powered acoustic sensor, which is composed of an adjustable spacing structure and sound-driven triboelectric nanogenerator (TENG). The acoustic sensor exhibits excellent electric output properties because of the poriferous electrode structure, ultrathin vibrating membrane as well as high-quality triboelectric materials. The sensor can deliver a maximal output voltage of 6.28 V with the sound frequency of 350 Hz and sound pressure of 110 dB. In addition, the electric output frequency is closely related to the applied acoustic wave and the corresponding directional dependence pattern as a butterfly is highly symmetrical. Our approach presents a cost-effective strategy to develop self-powered acoustic sensor and shows great potentials in home automation, self-powered microphone, sensor network and artificial intelligence.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50009464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Whistle Variation in Indo-Pacific Humpback Dolphins (Sousa chinensis) in Relation to Behavioural and Environmental Parameters in Northwestern Peninsular Malaysia 马来西亚半岛西北部印度太平洋座头海豚(Sousa chinensis)的口哨声变异与行为和环境参数的关系

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-07-19 DOI: 10.1007/s40857-022-00273-6

Saliza Bono, Satoko S. Kimura, Zhi Yi Teoh, jol Ern Ng, Kotaro Ichikawa, Louisa S. Ponnampalam

{"title":"Whistle Variation in Indo-Pacific Humpback Dolphins (Sousa chinensis) in Relation to Behavioural and Environmental Parameters in Northwestern Peninsular Malaysia","authors":"Saliza Bono, Satoko S. Kimura, Zhi Yi Teoh, jol Ern Ng, Kotaro Ichikawa, Louisa S. Ponnampalam","doi":"10.1007/s40857-022-00273-6","DOIUrl":"10.1007/s40857-022-00273-6","url":null,"abstract":"<div><p>Dolphins have a diverse acoustic communication system which includes whistles necessary for their survival. Whistle variation in dolphins could be related to the group behaviour, group size, formation and also environmental factors such as water depth, tidal phases and location. Such information is relatively unknown for the dolphin populations in Malaysia. This study aims to understand the whistle variation in Indo-Pacific humpback dolphins found in two sites in northwestern Peninsular Malaysia and possible factors that influence their whistles. A total of 4971 whistles were detected with whistle rates and parameters analysed. A GLMM analysis showed that whistle rates in both sites and in differing group sizes had significant differences. Only the mean whistle frequency significantly differed in differing group formations. Indo-Pacific humpback dolphins in a loose and uniform group had a lower mean frequency compared to other group formations. Other parameters such as the whistle duration and coefficient of frequency modulation did not show significant differences in differing behaviour, size, formation, water depth, tidal phases and location. This study is important and particularly valuable for understanding the species’ bioacoustics in the wider region of Southeast Asia.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50038083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

News Item 新闻

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-07-11 DOI: 10.1007/s40857-022-00272-7

引用次数: 0

Optimization Design of Acoustic Performance of Underwater Anechoic Coatings 水下消声涂层声学性能的优化设计

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-07-09 DOI: 10.1007/s40857-022-00267-4

Shuailong Zhou, Zhi Fang

{"title":"Optimization Design of Acoustic Performance of Underwater Anechoic Coatings","authors":"Shuailong Zhou, Zhi Fang","doi":"10.1007/s40857-022-00267-4","DOIUrl":"10.1007/s40857-022-00267-4","url":null,"abstract":"<div><p>Acoustic coatings with periodically arranged internal cavities have been widely applied to underwater vessels to reduce the underwater sound scattering. In this study, the simulation results from the finite element method (FEM) have been compared with the theoretical solutions based on the transfer matrix theory (TMT), and the reliability of the FEM has been verified. The Nelder-Mead algorithm has been employed to optimize the structure of the coatings and the material parameters with the sound absorption coefficient as the primary optimization objective. A function that characterizes the shape of a two-dimensional axisymmetric cavity has been proposed, and the peak value of the absorption coefficient can be successfully moved to the target frequency by changing the weighting strategy. The results show that the sound absorption coefficient of the optimized coating increases and the peak shape widens in the middle and low frequency band. The optimized axisymmetric cavity significantly improves the sound absorption performance of the anechoic coatings. The optimization algorithm of the cavity structure and material parameters proposed in this study provide an effective pathway for the optimal design of the anechoic coatings.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50035214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

External Acoustical Damping on a Metallic Angle Wedge in a High Temperature Resistant Ultrasonic Probe 耐高温超声探头金属角楔的外声阻尼

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-07-08 DOI: 10.1007/s40857-022-00270-9

Oleg Shapovalov, Thomas Heckel, Mate Gaal, Sabine Weiß

{"title":"External Acoustical Damping on a Metallic Angle Wedge in a High Temperature Resistant Ultrasonic Probe","authors":"Oleg Shapovalov, Thomas Heckel, Mate Gaal, Sabine Weiß","doi":"10.1007/s40857-022-00270-9","DOIUrl":"10.1007/s40857-022-00270-9","url":null,"abstract":"<div><p>Ultrasonic probes for high-temperature applications are provided with metallic wedges, which can withstand the contact with the high temperature of the inspected structure. The ultrasonic signal travels within the wedge and gets reflected from its boundaries, causing interference signals called “ghost echoes”. The current work presents an investigation of the additional damping effect provided by porous sintered metal plates applied onto the surface of the wedge. In particular, the study evaluates the effect of damping plate thickness on the interference signal level at different transmission frequencies. Damping plates made of sintered metal SIKA-R 15 AX were attached to a wedge prototype made of steel 1.4301. The study revealed, that the most effective thickness of damping plates in the selected frequency interval of 1 to 4 MHz is equal to 4 mm. The evaluation of the interference signal has shown that the application of such damping plates to the wedge surface contributes to an additional attenuation of an interference signal of 10 to 30 dB after 500 µs of signal propagation.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40857-022-00270-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50014791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Scoping Review of the Effects of Classroom Acoustic Conditions on Primary School Children’s Physical Health 课堂声学条件对小学生身体健康影响的范围综述

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-07-08 DOI: 10.1007/s40857-022-00271-8

Kiri Mealings

{"title":"A Scoping Review of the Effects of Classroom Acoustic Conditions on Primary School Children’s Physical Health","authors":"Kiri Mealings","doi":"10.1007/s40857-022-00271-8","DOIUrl":"10.1007/s40857-022-00271-8","url":null,"abstract":"<div><p>The aim of this scoping review was to synthesize research assessing the effect of classroom acoustic conditions on children’s physical health and identify areas for future research. This scoping review followed the PRISMA-ScR protocol. A comprehensive search of four online databases (ERIC, PubMed, Scopus, and Web of Science) was conducted using the search term <i>classroom AND (acoustic* OR noise OR reverb*) AND health.</i> Peer-reviewed journal articles were included if they were written in English, included children in the primary school age range (i.e. 5–12 years), and included a measure of children’s physical health. Eight papers out of the 407 papers returned in the search met the criteria to be included in the review. The results were analysed according to the effect of traffic noise, aircraft noise, and internal classroom noise on children’s physical health. The results were somewhat mixed, but overall they suggest that noise may have a negative effect on children’s physical health by inducing a stress response that results in asthma, fatigue, and headaches. Future research avenues are proposed to better understand the relationship between classroom acoustic conditions and children’s physical health.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40857-022-00271-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50014792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 7

Coherence-Weighted Steered Response Power for Acoustic Source Localization 声源定位的相干加权导向响应功率

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-06-10 DOI: 10.1007/s40857-022-00268-3

Pengfei Nie, Bin Liu, Ping Chen, Yan Han

引用次数: 2