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Effects of Artificial Synthetic Speech Control of SNR and Speech Rate on the Intelligibility of Train Station Announcements 人工合成语音的信噪比和语速控制对火车站广播可懂度的影响
IF 1.7 4区 物理与天体物理 Pub Date : 2023-09-30 DOI: 10.1007/s40857-023-00306-8
Mizuki Maruoka, Sohei Tsujimura, Takumi Asakura

An experimental study on the effect of the speech characteristics of the signal-to-noise ratio (SNR) and speech rate on the intelligibility of announcements at railway stations was conducted using an artificial synthetic voice. Synthesized speech has recently been used in noisy environments both indoors and outdoors, but unlike its use in quiet environments, when the environment is noisy, the intelligibility of announcements may be reduced. For railway station announcements, while natural spoken voices are currently used for multilingual announcements and disaster response broadcasts, deep neural network synthesized voices, which use deep learning, have also been adopted. However, the effect of the acoustic characteristics such as the SNR and speech rate on the intelligibility of reproduced announcements in noisy public spaces such as railway stations has not yet been clarified from a practical viewpoint. In this paper, in order to determine the appropriate SNR and speech rate for synthetic voice announcements in railway stations, auditory impressions of announcements with varying SNR and speech rate were evaluated by participants using a five-point scale. Based on the evaluations, the appropriate conditions for the broadcast of synthetic voice announcements at the ticket gate and on the platform of a station are discussed.

使用人工合成语音对信噪比(SNR)和语速等语音特性对火车站广播可懂度的影响进行了实验研究。合成语音最近被用于室内和室外的嘈杂环境中,但与在安静环境中的使用不同,当环境嘈杂时,广播的可懂度可能会降低。在火车站广播中,虽然目前多语言广播和救灾广播都使用自然语音,但也有采用深度学习的深度神经网络合成语音。然而,在火车站等嘈杂的公共场所,信噪比和语速等声学特性对再现广播可懂度的影响尚未从实用角度得到明确。在本文中,为了确定火车站合成语音广播的适当信噪比和语速,参与者使用五点量表对不同信噪比和语速的广播的听觉印象进行了评估。根据评价结果,讨论了在火车站检票口和站台播放合成语音广播的适当条件。
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引用次数: 0
Psychological and Physiological Effects of Low-Level Meaningful Artificial Sounds on Intellectual Tasks 低水平有意义人工声音对智力任务的心理和生理影响
IF 1.7 4区 物理与天体物理 Pub Date : 2023-09-26 DOI: 10.1007/s40857-023-00307-7
T. Asakura

The present study aimed to investigate the psychological and physiological effects of low-level meaningful artificial sounds on intellectual tasks. The psychological factors related to the degree of disturbance, concentration, and stress, as measured by subjective evaluation, were compared with the degree of physiological stress, as measured using salivary alpha-amylase activity. The results indicated that human speech and chewing sounds caused similar levels of psychological stress while performing intellectual tasks; however, chewing sounds caused comparatively less physiological stress than did human speech sounds. These findings suggest that depending on the sound stimulus, psychological and physiological stress characteristics may not coincide.

本研究旨在探讨低级有意义的人工声音对智力任务的心理和生理影响。通过主观评价测量了与干扰程度、注意力集中程度和压力有关的心理因素,并与通过唾液α-淀粉酶活性测量的生理压力程度进行了比较。结果表明,人声和咀嚼声在完成智力任务时造成的心理压力程度相似;但是,咀嚼声造成的生理压力要比人声小。这些结果表明,根据声音刺激的不同,心理和生理压力特征可能并不一致。
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引用次数: 0
3D Printed Thick Micro-Perforated Panel with Graded Perforation for Practical Wall Sound Absorption Applications 具有分级穿孔的 3D 打印厚微穿孔板,适用于实际墙壁吸音应用
IF 1.7 4区 物理与天体物理 Pub Date : 2023-09-13 DOI: 10.1007/s40857-023-00303-x
Mohamed Shafeer P.P, Jeyaraj Pitchaimani, Mrityunjay Doddamani

In recent years, noise pollution has been recognized as a significant environmental issue, and using sustainable materials as sound-absorbing building materials have drawn considerable attention. The influence of graded perforations on the acoustic characteristics of a 3D printed bio-degradable thick micro-perforated panel (MPP) having graded perforation and made of Poly Lactic Acid is presented. Thicker panels are considered owing to the mechanical strength required for practical wall applications. A fused deposition modeling based 3D printer is used to fabricate the MPPs with graded cylindrical perforations and different patterning of perforations. The sound absorption coefficient is measured using the impedance tube technique and compared with theoretical results obtained using an equivalent electro-acoustic model. Results revealed that for normal incidence, the absorption coefficient is only dependent on the overall perforation ratio of the panel, irrespective of the perforation gradation and patterning of perforation. This gives the freedom to distribute the perforation aesthetically for interior wall application. This work also proposes the effective perforation ratio approach to predict the sound absorption coefficient (SAC) of MPPs with graded perforation. For multi-thickness MPPs and MPPs with linearly graded thickness, improved sound absorption characteristics were observed both in terms of bandwidth of absorption and peak value of SAC compared to the conventional constant thickness MPPs.

近年来,噪声污染已被认为是一个重要的环境问题,使用可持续材料作为吸音建筑材料已引起广泛关注。本文介绍了分级穿孔对由聚乳酸制成的 3D 打印生物可降解厚微孔板(MPP)声学特性的影响。考虑到实际墙体应用所需的机械强度,我们采用了较厚的面板。使用基于熔融沉积建模技术的三维打印机制造了具有分级圆柱穿孔和不同穿孔图案的微穿孔板。使用阻抗管技术测量了吸声系数,并将其与使用等效电声模型获得的理论结果进行了比较。结果表明,在正常入射情况下,吸声系数只取决于面板的整体穿孔率,而与穿孔的等级和穿孔的图案无关。这为内墙应用提供了美观的穿孔分布自由度。这项研究还提出了有效穿孔率方法,用于预测具有分级穿孔的 MPP 的吸音系数(SAC)。与传统的恒定厚度 MPP 相比,多厚度 MPP 和线性分级厚度 MPP 在吸声带宽和 SAC 峰值方面的吸声特性都有所改善。
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引用次数: 0
Noise Optimization and Experimental Verification of Voluteless Centrifugal Fan 无蜗壳离心风机噪声优化及实验验证
IF 1.7 4区 物理与天体物理 Pub Date : 2023-09-05 DOI: 10.1007/s40857-023-00305-9
Shuihua Zheng, Zhenghao Shao, Jianfei Liu, Yiliang Li, Yiqi Li, Yefeng Jiang, Min Chai

This paper focuses on the voluteless centrifugal fan and proposes a method to reduce the aerodynamic noise of the fan. Through fluid and acoustic simulations, as well as experimental investigations, the fan is examined. The innovative approach involves the implementation of an anti-vortex ring structure at the impeller front disk of the centrifugal fan, and the influence of this structure on the fan's operational efficiency and noise characteristics is analyzed. Based on this analysis, the structural parameters are optimized to control the vorticity of the impeller, resulting in improved overall performance and noise reduction of the HW355 centrifugal fan. Furthermore, noise simulations are conducted using the Lighthill analogy method, which transforms the coupling of turbulent flow and noise into an acoustic analysis of equivalent sound sources in a quiescent medium. By analyzing the results in the frequency domain, noise directivity characteristics, sound pressure level distribution on the meridional plane, and conducting noise experiments, a comprehensive analysis of the acoustic characteristics of the voluteless centrifugal fan is conducted. The study verifies the optimization effects of the innovative anti-vortex ring structure on the aerodynamic noise of the voluteless centrifugal fan.

本文以无蜗壳离心风机为研究对象,提出了一种降低风机气动噪声的方法。通过流体和声学模拟以及实验研究,对风扇进行了研究。该创新方法涉及在离心风机叶轮前盘上实施防涡环结构,并分析了该结构对风机运行效率和噪声特性的影响。在此基础上,对结构参数进行优化,控制叶轮涡量,提高HW355离心风机的整体性能,降低噪音。此外,采用Lighthill类比方法进行了噪声模拟,该方法将湍流和噪声的耦合转换为静态介质中等效声源的声学分析。通过频域结果分析、噪声指向性特性分析、子午面声压级分布分析以及噪声实验,对无蜗壳离心风机的声学特性进行了全面分析。研究验证了新型抗涡环结构对无蜗壳离心风机气动噪声的优化效果。
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引用次数: 0
Deconvolved Beamforming for a Compact Conformal Array on a Three-dimensional Mobile Platform 三维移动平台上紧凑型共形阵列的反卷积波束形成
IF 1.7 4区 物理与天体物理 Pub Date : 2023-08-28 DOI: 10.1007/s40857-023-00304-w
Dajun Sun, Ke Zhang, Jidan Mei, Wenting Cui, Yuqing Pei

A robust and high-resolution deconvolution algorithm based on coordinate correction is developed for a compact conformal array on a three-dimensional (3D) moving platform such as underwater glider. First, the coordinate-correcting conventional beamforming is derived to directly estimate the azimuth of the long-range targets in the geodesic coordinate system for a 3D moving platform array. Then, we improve the extended Richardson–Lucy deconvolution (Ex-RL-dCv) beamforming algorithm utilizing coordinate correction to simplify the bearing estimation model from two-dimensional (2D) to one-dimensional (1D). The improved algorithm corrects the deconvolution point spread function (PSF) dictionary mismatch caused by the platform’s 3D motion, and has lower sidelobes compared with the Ex-RL-dCv algorithm without coordinate correction. Finally, simulations and results from field-trial data processing are presented. The results demonstrate that the improved Ex-RL-dCv beamforming based on coordinate correction can significantly suppress the high sidelobes caused by deconvolution model mismatch, and successfully realize the robust and high-resolution detection for targets using the compact conformal array on a 3D mobile platform.

针对水下滑翔机等三维运动平台上的紧凑共形阵列,提出了一种基于坐标校正的鲁棒高分辨率反褶积算法。首先,推导了用于三维移动平台阵列测地坐标系下远程目标方位直接估计的坐标校正常规波束形成方法;然后,利用坐标校正对扩展Richardson-Lucy反褶积(Ex-RL-dCv)波束形成算法进行改进,将方位估计模型从二维(2D)简化为一维(1D)。改进算法修正了平台三维运动引起的解卷积点扩散函数(PSF)字典不匹配问题,与不进行坐标校正的Ex-RL-dCv算法相比,具有更低的副瓣。最后给出了仿真和现场试验数据处理的结果。结果表明,改进的基于坐标校正的Ex-RL-dCv波束形成能显著抑制反褶积模型失配导致的高副瓣,成功实现了三维移动平台上紧凑共形阵列目标的鲁棒高分辨率检测。
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引用次数: 0
A Scoping Review: Identifying Targeted Intervention Strategies for Workers with Occupational Hearing Loss 范围综述:确定职业性听力损失工人的针对性干预策略
IF 1.7 4区 物理与天体物理 Pub Date : 2023-08-15 DOI: 10.1007/s40857-023-00302-y
Adelle Liebenberg, Melinda Gardner, Valerie M Nie, Carole L James, Sue Reed

An apparent disconnect exist in workplaces regarding identification of occupational hearing loss (OHL) and implementation of specific strategies to prevent progression of OHL, evident through continued high incidence of OHL. This scoping review aimed to identify evidence regarding targeted intervention used by industry, specifically to prevent the progression of OHL for workers. The scoping review was undertaken using the PRISMA-ScR methodology. Search terms were based on three broad categories, hearing loss, workplace, and intervention. Initially 1309 articles were identified for screening and 1,207 studies not meeting the criteria were excluded. Full text reviews of 102 articles were completed and a further 93 studies excluded. The scoping review produced nine studies which were quantitatively analysed. All interventions focused primarily on lower order controls, specifically administrative and personal protective equipment. Eight studies focused on awareness training, health monitoring, mandating hearing protection device use and fit testing, and using personal attenuation ratings as a predictor to OHL. Only one study mentioned isolation of workers from noise sources, and this was an interview study with workplace managers, not a specific intervention at a workplace. The result of the review highlights the lack of published literature on targeted interventions for workers with OHL. There is insufficient evidence to inform effective, impactful change in practice to prevent the progression of OHL. It is recommended that a system of collecting and assessing specific interventions and controls for workers with OHL be developed to better inform industry on strategies that will provide adequate protection for these workers.

在职业听力损失(OHL)的识别和防止OHL进展的具体策略的实施方面,工作场所存在明显的脱节,这可以从OHL的持续高发病率中看出。本综述旨在确定有关行业使用的针对性干预措施的证据,特别是防止工人OHL的进展。使用PRISMA-ScR方法进行范围审查。搜索词基于三大类:听力损失、工作场所和干预。最初筛选了1309篇文章,排除了1207篇不符合标准的研究。我们完成了102篇文章的全文综述,并排除了另外93项研究。范围审查产生了九项研究,并对其进行了定量分析。所有干预措施主要侧重于较低级别的控制,特别是行政和个人防护设备。8项研究的重点是意识训练、健康监测、强制使用听力保护装置和适合测试,以及使用个人衰减评级作为OHL的预测指标。只有一项研究提到了将工人与噪声源隔离开来,这是一项对工作场所经理的访谈研究,而不是对工作场所的具体干预。审查的结果强调缺乏发表的文献有针对性地干预工作人员与OHL。没有足够的证据表明在实践中进行有效的、有影响的改变以防止OHL的进展。建议建立一个收集和评估针对职业倦怠症工人的具体干预措施和控制措施的系统,以便更好地向工业界通报将为这些工人提供充分保护的战略。
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引用次数: 1
Localisation of Automobile Door Rattle Noise Based on the Time Reversal Method 基于时间反转方法的汽车门摇噪声定位
IF 1.7 4区 物理与天体物理 Pub Date : 2023-08-05 DOI: 10.1007/s40857-023-00301-z
Weidong Zhao, Nan Zhang, Li’an Tian

Abnormal noise is a key factor affecting automobile ride comfort, and the localisation of abnormal noise sources is critical for noise control. Herein, a mathematical model is proposed for the localisation of automobile door rattle sources based on Lamb wave propagation theory, Morlet wavelet transform, and the principle of time-reversal focus positioning. The cause of vibration signal wave packet aliasing was explored through thin plate impact simulation, and narrow-band signal extraction was then determined. The influence of the initial generation time ({T}_{0}) of the rattle signal on the positioning imaging was obtained through a rattle noise source localisation test, and the signal imaging discrimination method at time ({T}_{0}) was proposed. Verification test results showed that the maximum positioning error of the automobile door rattle noise source was no greater than 3.2 cm, and the average positioning error was 2.01 cm, which confirmed the feasibility of the proposed method for locating the rattle noise source in the automobile door.

异常噪声是影响汽车平顺性的关键因素,异常噪声源的定位是控制汽车噪声的关键。在此基础上,基于Lamb波传播理论、Morlet小波变换和时间反转焦点定位原理,提出了车门颤振源定位的数学模型。通过薄板冲击仿真,探讨振动信号波包混叠的原因,确定窄带信号提取方法。通过响浪声噪声源定位试验,得到了响浪声信号初始产生时间({T}_{0})对定位成像的影响,并提出了({T}_{0})时刻的信号成像辨别方法。验证试验结果表明,车门摇响器噪声源的最大定位误差不大于3.2 cm,平均定位误差为2.01 cm,验证了所提方法定位车门摇响器噪声源的可行性。
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引用次数: 0
Acoustic Monitoring of Diver’s Respiratory Rate by Respiratory-Associated Noise 呼吸相关噪声对潜水员呼吸频率的声学监测
IF 1.7 4区 物理与天体物理 Pub Date : 2023-06-29 DOI: 10.1007/s40857-023-00300-0
Anatoly Kostiv, Vladimir Korenbaum, Veniamin Dorozhko

Monitoring the condition of divers during immersion is essential to ensuring their safety and planning permissible physical activity. Monitoring respiratory rates using a diver's respiratory sounds as parameters might be used for that purpose. This study was conducted with three types of diving apparatuses intended for civilian use: scuba, closed-circuit, and surface-supplied. Respiratory rates were investigated using wearable acoustic sensors installed in diving suit air cavities or remote hydrophones. The respiratory rate monitoring was also possible using a standard underwater voice communication system. Periodic breathing sounds are distinguishable in open-circuit scuba at a distance of 20 m, and a distance of 100–140 m with additional processing using wavelet transforms. The noise of inhalation and exhalation using closed-circuit breathing apparatus was monitored in the vicinity of the diver's respiratory tract. Respiratory sounds were distinguishable while using surface-supplied diving equipment (diver at the bottom, depth 8 m). The mean respiratory rate was 16.4 respiratory cycles per minute. The researchers could assess a diver's respiratory rate without invasive intervention in the breathing apparatus design. The data obtained were helpful for the remote monitoring of divers by the diving supervisor. Additionally, the data could be entered into a personal decompression computer for self-monitoring.

在潜水过程中监测潜水员的状态对于确保他们的安全和计划允许的身体活动是必不可少的。监测呼吸频率使用潜水员的呼吸声音作为参数可能用于此目的。本研究使用三种民用潜水设备进行:水肺潜水、闭路潜水和水面潜水。使用安装在潜水服气腔或远程水听器中的可穿戴声传感器来研究呼吸频率。呼吸频率监测也可以使用标准的水下语音通信系统。在开路水肺中,周期性呼吸声在20米的距离上是可分辨的,在100-140米的距离上,使用小波变换进行额外处理。使用闭路呼吸器监测潜水员呼吸道附近的吸入和呼出噪音。使用水面提供的潜水设备(潜水员在海底,深度8米)时,呼吸音是可分辨的。平均呼吸频率为16.4呼吸周期/分钟。研究人员可以评估潜水员的呼吸频率,而无需在呼吸器设计中进行侵入性干预。所获得的数据有助于潜水主管对潜水员进行远程监控。此外,数据可以输入个人减压电脑进行自我监控。
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引用次数: 0
News Item 新闻
IF 1.7 4区 物理与天体物理 Pub Date : 2023-06-26 DOI: 10.1007/s40857-023-00299-4
{"title":"News Item","authors":"","doi":"10.1007/s40857-023-00299-4","DOIUrl":"10.1007/s40857-023-00299-4","url":null,"abstract":"","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"51 2","pages":"159 - 182"},"PeriodicalIF":1.7,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50048458","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
Identifying Distinguishing Acoustic Features in Felid Vocalizations Based on Call Type and Species Classification 基于叫声类型和种类分类识别猫科动物发声的声学特征
IF 1.7 4区 物理与天体物理 Pub Date : 2023-06-10 DOI: 10.1007/s40857-023-00298-5
Danushka Bandara, Karen Exantus, Cristian Navarro-Martinez, Murray Patterson, Ashley Byun

The cat family Felidae is one of the most successful carnivore lineages today. However, the study of acoustic communication between felids remains a challenge due to the lack of fossils, the limited availability of audio recordings because of their largely solitary and secretive behaviour, and the underdevelopment of computational models and methods needed to address these questions. This study attempts to develop a machine learning-based approach which can be used to identify acoustic features that distinguish felid call types and species from one another through the optimization of classification tasks on these call types and species. A felid call dataset was developed by extracting audio clips from diverse sources. Due to the limited availability of samples, this study focused on the Pantherinae subfamily. The audio clips were manually annotated for call type and species. Time–frequency features were then extracted from the dataset. Finally, several multi-class classification algorithms were applied to the resulting data for classifying species and call types. We found that duration, mean mel spectrogram, frequency range, and amplitude range were among the most distinguishing features for the classifications.

猫科动物是当今最成功的食肉动物谱系之一。然而,由于缺乏化石,猫科动物之间的声音交流研究仍然是一个挑战,录音的可用性有限,因为它们大多是孤独和隐蔽的行为,以及解决这些问题所需的计算模型和方法的不发达。本研究试图开发一种基于机器学习的方法,该方法可以通过优化这些呼叫类型和物种的分类任务来识别区分野外呼叫类型和物种的声学特征。通过提取不同来源的音频片段,建立了现场呼叫数据集。由于样本有限,本研究主要集中在豹亚科。语音片段被手工标注为呼叫类型和种类。然后从数据集中提取时频特征。最后,应用多类分类算法对结果数据进行物种和叫声类型的分类。我们发现持续时间,平均mel谱图,频率范围和幅度范围是分类中最显著的特征。
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引用次数: 0
期刊
Acoustics Australia
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