Acoustics Australia最新文献_第5页

A High Precision Direction-Finding Algorithm for Low-Noise Target Based on Single Vector Hydrophone 基于单矢量水听器的低噪声目标高精度测向算法

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2025-03-04 DOI: 10.1007/s40857-025-00347-1

Chao Wang, Qi Zhang, Yanhou Zhang, Meng Yuan, Qiang Li

{"title":"A High Precision Direction-Finding Algorithm for Low-Noise Target Based on Single Vector Hydrophone","authors":"Chao Wang, Qi Zhang, Yanhou Zhang, Meng Yuan, Qiang Li","doi":"10.1007/s40857-025-00347-1","DOIUrl":"10.1007/s40857-025-00347-1","url":null,"abstract":"<div><p>Given the energy and size constraints of small and micro underwater unmanned platforms, along with the limited space gain available for acoustic systems and the challenge of detecting low-noise targets autonomously, this study introduces an improved histogram algorithm that relies on a single vector hydrophone. Additionally, a novel azimuth-based constant false alarm rate target autonomous detection method is developed to enhance the performance of target direction-finding and autonomous detection in scenarios characterized by low signal-to-noise ratio (SNR). Simulation results demonstrate that the modified histogram algorithm exhibits a narrower beamwidth and improved direction-finding accuracy. The SNR of −10 dB corresponds to a −3 dB beamwidth of 14° and direction-finding errors of 2.3°. Achieving a target autonomous detection probability of 100% simply requires an SNR of −16 dB. Experimental results in an anechoic pool show that the ameliorative histogram algorithm can effectively perform direction-finding and independent detection of sound sources at an SNR of −13 dB, with an average direction-finding error of approximately 4.8°. Sea testing data processing indicates that the improved histogram algorithm outperforms its predecessor in target direction-finding performance and enhances detection distance by approximately 2 times, validating the efficacy of the enhancement.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 2","pages":"223 - 240"},"PeriodicalIF":1.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934667","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: 0

Band Tones: Auditory Stream Segregation with Alternating Frequency Bands 频带音调：交替频带的听觉流分离

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2025-03-04 DOI: 10.1007/s40857-025-00348-0

Geng-Yan Jhang, Kazuo Ueda, Hiroshige Takeichi, Gerard B. Remijn, Emi Hasuo

{"title":"Band Tones: Auditory Stream Segregation with Alternating Frequency Bands","authors":"Geng-Yan Jhang, Kazuo Ueda, Hiroshige Takeichi, Gerard B. Remijn, Emi Hasuo","doi":"10.1007/s40857-025-00348-0","DOIUrl":"10.1007/s40857-025-00348-0","url":null,"abstract":"<div><p>An alternating tone sequence may be perceptually integrated into one stream or segregated into two streams based on pitch and timbre differences between the tones (<i>sequential stream segregation</i>). However, the effect of the spectral dispersion of harmonic complex tones on sequential stream segregation has been largely unexplored. We introduced <i>band tones</i> that were harmonic complex tones divided into several frequency bands, in which frequency components in every other frequency band were removed. Here, we show that segregation was reported more often with fewer frequency bands and larger separation in fundamental frequency. Listeners generally responded to 2–8-band stimuli as segregated most of the time. However, the percentages of segregation responses for 16-band stimuli were generally dominated by fundamental frequency separations and whether the movements of fundamental frequencies and band-like spectral patterns were congruent or incongruent. The results suggest that the auditory system cannot organize rapidly alternating frequency component blocks spanning a wide frequency range into one stream.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 2","pages":"241 - 251"},"PeriodicalIF":1.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40857-025-00348-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934665","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

Impact of Face Mask Wearing on Vowel Production 戴口罩对元音产生的影响

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2025-02-22 DOI: 10.1007/s40857-025-00349-z

Feiyun Jiang, Yang Chen, Manwa L. Ng

{"title":"Impact of Face Mask Wearing on Vowel Production","authors":"Feiyun Jiang, Yang Chen, Manwa L. Ng","doi":"10.1007/s40857-025-00349-z","DOIUrl":"10.1007/s40857-025-00349-z","url":null,"abstract":"<div><p>In the post-COVID era, face masks have become a part of our daily lives. However, the effects of these masks on Mandarin speech production remain unclear. This study aimed to address this research gap by conducting a comprehensive investigation of the impact of surgical face masks on vowel production. Vowels produced in a continuous speech context were recorded for 61 native Mandarin-speaking adults, both with and without wearing a face mask. The acoustic parameters associated with three corner vowels /<i>i</i>/, /<i>a</i>/, and /<i>u</i>/ in Mandarin were measured. Significant changes were observed in the acoustic parameters under the masked condition, including an increase in F0 and a decrease in both F1 and F2 of vowel /<i>a</i>/, as well as tVSA, F1RR, and F2RR. However, no significant changes were found in duration and FCR. The patterns exhibited similarities between male and female speakers. The observed differences in vowel production can be attributed to the acoustic and physical consequences of wearing face masks. These differences, which may indirectly lead to reduced speech intelligibility, highlight the necessity of adopting adaptive strategies when face masks are present in various communication settings.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 1","pages":"127 - 137"},"PeriodicalIF":1.8,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40857-025-00349-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167479","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

Impedance Tube Solution for Helmholtz Resonator Prototyping 亥姆霍兹谐振器原型的阻抗管解决方案

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2025-01-21 DOI: 10.1007/s40857-024-00342-y

David Jun, Josef Plasek

引用次数: 0

Vehicle Interior Multi-Zone Sound Field Reproduction with Uncertain Disturbance of Acoustic Transfer Function 不确定声传递函数扰动下的车辆内部多区声场再现

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2025-01-12 DOI: 10.1007/s40857-025-00346-2

Zhipeng Zeng, Shuang Huang, Hui Guo, Tao Yuan, Ningning Liu, Pei Sun

{"title":"Vehicle Interior Multi-Zone Sound Field Reproduction with Uncertain Disturbance of Acoustic Transfer Function","authors":"Zhipeng Zeng, Shuang Huang, Hui Guo, Tao Yuan, Ningning Liu, Pei Sun","doi":"10.1007/s40857-025-00346-2","DOIUrl":"10.1007/s40857-025-00346-2","url":null,"abstract":"<div><p>Multi-zone sound field reproduction uses the loudspeaker array to divide the space into different zones, which is a sound field control method to meet the different requirements of listeners in each zone. Since the vehicle interior is a small and enclosed space, the disturbance of acoustic transfer function (ATF) caused by scattering and reverberation in the acoustic environment and external noise will greatly affect the control effect. Certain predictable and measurable disturbances of ATF can be solved through error modeling or active control. However, due to the presence of disturbances that cannot be measured in advance, the effect of multi-zone sound field reproduction is barely satisfactory. In this paper, the maximum normalized recovery control (MNRC) is proposed to improve the robustness of multi-zone sound field reproduction. By measuring ATF in the actual car and calculating the expected ATF, the magnitude variation range of ATF is confirmed. Then, through normalizing the maximum value of the ATF matrix before being disturbed, the transmission characteristics are preserved, allowing for good multi-zone sound field reproduction performance even in the presence of unpredictable disturbances. The MNRC method does not require any error parameters of uncertain disturbance except for its amplitude variation range, reducing the preliminary preparation work for multi-zone sound field reproduction. Through simulation and experimental verification, the results show that when controlling the disturbed sound field, the MNRC method has a significant improvement compared to classic multi-zone sound field reproduction method. Furthermore, the performance in certain frequency bands is even better than the effect before being disturbed.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 1","pages":"113 - 125"},"PeriodicalIF":1.8,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164377","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: 0

Prediction of Aerodynamic Noise of a Traction Induction Motor Using Methods of Computational Fluid Dynamics and Lighthill Acoustic Analogy 基于计算流体力学和Lighthill声学类比的牵引感应电机气动噪声预测

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2025-01-10 DOI: 10.1007/s40857-024-00344-w

Xu Zheng, Yanhong Sun, Yong Yu, Chi Liu, Yi Qiu

{"title":"Prediction of Aerodynamic Noise of a Traction Induction Motor Using Methods of Computational Fluid Dynamics and Lighthill Acoustic Analogy","authors":"Xu Zheng, Yanhong Sun, Yong Yu, Chi Liu, Yi Qiu","doi":"10.1007/s40857-024-00344-w","DOIUrl":"10.1007/s40857-024-00344-w","url":null,"abstract":"<div><p>Traction induction motors (TIMs) are widely used in electrically powered railway vehicles. TIMs can generate significant noise during operation, which has become one of the primary noise sources for railway vehicles. In this paper, a purposely designed experiment was conducted to characterize the acoustic performance of a TIM based on the comparison of speed up and power off conditions. It was found that aerodynamic noise was dominant at speeds higher than 3000 r/min (3000 rotations per minute) and the main component of the aerodynamic noise was the 48th order (48 times the rotation frequency), which was related to the 48 conductors in the air-gap. To simulate the aerodynamic noise of the TIM, a computational fluid dynamics model was developed to calculate the flow field of the TIM. Lighthill acoustic analogy was then applied to calculate the noise due to the acoustic sources induced by the flow. Compared to the method with Ffowcs Williams–Hawkings acoustic analogy, the proposed method improved the accuracy in predicting the aerodynamic noise, and allowed to quantify the contribution to the aerodynamic noise of TIMs from a variety of acoustic excitation sources. The results showed that the excitation sources adjacent to the rotational air gap contributed the most to the motor’s aerodynamic noise. The proposed method was proven to be an efficient approach for optimal design of the TIM aerodynamic noise by identifying the main excitation sources and offered valuable insights for prediction of aerodynamic noise of other types of induction motors.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 1","pages":"99 - 111"},"PeriodicalIF":1.8,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164348","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: 0

A Scoping Review of Noise Transmission from Outdoors into Classrooms: Factors, Impacts and Mitigation Strategies 户外噪音传入教室的范围检讨：因素、影响及纾缓策略

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2025-01-08 DOI: 10.1007/s40857-024-00343-x

Surabhi M. Mendhe, Amit M. Deshmukh

{"title":"A Scoping Review of Noise Transmission from Outdoors into Classrooms: Factors, Impacts and Mitigation Strategies","authors":"Surabhi M. Mendhe, Amit M. Deshmukh","doi":"10.1007/s40857-024-00343-x","DOIUrl":"10.1007/s40857-024-00343-x","url":null,"abstract":"<div><p>Effective communication between teachers and students is vital for successful learning, but outdoor noise can disrupt classroom acoustics and hinder this process. Despite growing research on classroom acoustics, gaps remain in understanding how factors like environmental noise, building design, and classroom acoustics interact to affect learning environments. This scoping review aims to systematically synthesize existing literature on the transmission of outdoor noise into classrooms. It explores the sources and factors that contribute to noise transmission, examines how the classroom acoustic properties that influence the impact of transmitted noise on occupants, and reviews effective mitigation strategies. The review analysed 33 peer-reviewed papers from 2003 to 2023, retrieved from Web of Science and Science Direct using the keywords <i>Classroom acoustics</i> AND <i>Outdoor noise</i>. Included studies that met criteria such as focusing on outdoor noise in mainstream classrooms and being published in English peer-reviewed journals. Traffic, aircraft, and railway noise were identified as major sources, with traffic peaking in the morning and afternoon. Building design, façade insulation, and ventilation influenced noise transmission exacerbated by proximity to noise sources. Poor acoustic properties like high reverberation time reduce speech clarity and increase background noise, affecting students' cognitive performance and teachers' vocal health. Mitigating strategies for noise include improved façade insulation, noise barriers, and window placement. This review also identifies gaps in current research, particularly regarding the combined effects of architectural elements such as building shape, height, and façade ratio. Future studies should explore how these factors interact to develop more effective noise management strategies in school. Implementing these strategies will enhance classroom acoustics, benefiting its occupants.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 1","pages":"159 - 182"},"PeriodicalIF":1.8,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163460","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: 0

The Variation in the Acoustic Response of the Karadeniz Kemenche Depending on the Thickness of the Soundboard Karadeniz Kemenche的声学响应随音板厚度的变化

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2024-12-28 DOI: 10.1007/s40857-024-00345-9

Akın Oktav

{"title":"The Variation in the Acoustic Response of the Karadeniz Kemenche Depending on the Thickness of the Soundboard","authors":"Akın Oktav","doi":"10.1007/s40857-024-00345-9","DOIUrl":"10.1007/s40857-024-00345-9","url":null,"abstract":"<div><p>The variation in the acoustic response of the Karadeniz kemenche, a bowed string musical instrument, depending on the thickness of the soundboard is investigated. The most important challenge in obtaining an updated model for the musical instruments is the uncertainties arising from the orthotropic wood materials used. A model update procedure is implemented to resolve uncertainties in the mechanical properties of materials. The model is updated and complemented through an experimental modal analysis study. An analytical solution for the calculation of acoustic mode frequencies is implemented. A vibroacoustic analysis is performed to model the fluid–structure interaction. An acoustic response analysis is conducted by applying the experimentally measured nonlinear triaxial acceleration signal to the bridge of the musical instrument to simulate the slip–stick behaviour of the bow. Finally, the effect of soundboard thickness on the amplitude of acoustic pressure is examined. It is revealed that the amplitude of acoustic pressure substantially increases at the resonances that appeared at 340 Hz and 900 Hz, when the thickness of soundboard is 2.1 mm, and the amplitudes of pitch frequencies are observed to be higher in a broadband range. When the thickness of the soundboard of the instrument is 1.7 mm, it is seen that the amplitude of the pitch frequency of 1040 Hz increases significantly, and thus, it can produce a higher-pitched sound. When the soundboard thickness of the instrument is 2.9 mm, a strong pitch frequency of around 700 Hz can be obtained, according to the results of the studied model.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 1","pages":"83 - 97"},"PeriodicalIF":1.8,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170075","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: 0

News Item 新闻

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2024-11-28 DOI: 10.1007/s40857-024-00340-0

引用次数: 0

Accelerometer Mounting on Piping Systems: Experimental Study on a 20-mm-Diameter Curved Surface 管道系统上的加速度计安装：直径为20mm的曲面上的实验研究

IF 1.8 4区物理与天体物理

Acoustics Australia Pub Date : 2024-11-12 DOI: 10.1007/s40857-024-00339-7

Peter Jordan Scally, Maximilian Balestri, Theodore Brian Jenkins, Simon John Drew, Pawel Podsiadlo

{"title":"Accelerometer Mounting on Piping Systems: Experimental Study on a 20-mm-Diameter Curved Surface","authors":"Peter Jordan Scally, Maximilian Balestri, Theodore Brian Jenkins, Simon John Drew, Pawel Podsiadlo","doi":"10.1007/s40857-024-00339-7","DOIUrl":"10.1007/s40857-024-00339-7","url":null,"abstract":"<div><p>Assessments of vibration signals measured on surfaces of piping systems are essential in prevention of vibration-induced failures. Magnets, piezoelectric accelerometers, and hand-held vibration analysers are typically used for those assessments. <i>ISO 5348–2021 “Mechanical Vibration and Shock—Mechanical mounting of accelerometers</i>” provides a guideline of the correct mounting of accelerometers on flat surfaces. However, it offers limited information regarding the mounting of accelerometers on curved surfaces. This technical note focusses on the mounting of accelerometers on 20-mm-diameter curved surfaces. Experimental studies with sinusoidal signals were conducted using magnetic and non-magnetic metallic materials, small and large accelerometers and six common mounting methods, i.e. beeswax, cyanoacrylate glue, dual-rail magnet, flat magnet, hand-held and thin double-sided tape. For each mounting method, a frequency response plot of the relative sensitivity of the test accelerometer with respect to the reference accelerometers was obtained for frequencies ranging from 2 Hz to 10 kHz. The plots were used to determine mounting frequency limits by identifying points that deviate more than 3 dB from the reference sensitivity. For magnetic curved surfaces, the dual-rail magnet and glue methods exhibited the highest frequency limits. For non-magnetic curved surfaces, a thin strip of double-sided tape was required, but it only worked for small accelerometers. Hand holding an accelerometer is not recommended. Future work is needed for transient signals.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 1","pages":"139 - 149"},"PeriodicalIF":1.8,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164438","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: 0