Acoustics Australia最新文献_第8页

A Scoping Review of the Effect of Classroom Acoustic Conditions on Primary School Children’s Numeracy Performance and Listening Comprehension 课堂声学条件对小学生算术成绩和听力理解影响的范围综述

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-11-16 DOI: 10.1007/s40857-022-00284-3

Kiri Mealings

{"title":"A Scoping Review of the Effect of Classroom Acoustic Conditions on Primary School Children’s Numeracy Performance and Listening Comprehension","authors":"Kiri Mealings","doi":"10.1007/s40857-022-00284-3","DOIUrl":"10.1007/s40857-022-00284-3","url":null,"abstract":"<div><p>Obtaining adequate numeracy skills and listening comprehension skills at primary school are vital for children’s future success. However, classrooms are often noisy and reverberant which may interfere with learning these skills. Two scoping reviews were conducted to synthesise research assessing the effect of different classroom acoustic conditions on (1) children’s numeracy performance and (2) children’s listening comprehension and to identify areas for future research. The PRISMA-ScR protocol was used for these scoping reviews. A comprehensive search of four online databases was conducted in September 2021 using the search term <i>classroom AND</i> (<i>noise OR reverberation OR acoustics</i>) <i>AND</i> (<i>numeracy OR math* OR arithmetic</i>) for the first scoping review, and in May 2022 using the search term <i>classroom AND</i> (<i>acoustic* OR noise OR reverb*</i>) <i>AND</i> (\"<i>listening comprehension\" OR \"auditory comprehension\" OR \"spoken language comprehension\" OR \"speech comprehension</i>”) for the second scoping review. The effect of the acoustic conditions on children’s numeracy was varied with most studies showing a negative or no effect of noise, but two showed a positive effect. Therefore, future research is needed to better understand the effect of different classroom acoustic conditions on children’s numeracy performance. For listening comprehension overall, signal-to-noise ratios below + 10 dB mostly had a negative effect on children’s listening comprehension compared to quiet conditions; however, variables such as the noise type, signal-to-noise ratio tested, the listening comprehension domain examined, the population studied, and the voice used for the stimuli affected this. Future research avenues to better understand these effects are proposed.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"51 1","pages":"129 - 158"},"PeriodicalIF":1.7,"publicationDate":"2022-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40857-022-00284-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50032922","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: 4

Small Sample Size and Experience-Independent Hydrate and Pipeline Leakage Identification Technique for Natural Gas Pipelines Based on Deep Forest 基于深森林的天然气管道水合物与管道泄漏小样本非经验识别技术

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-11-10 DOI: 10.1007/s40857-022-00285-2

Hongping Gao, Xiaocen Wang, Yang An, Zhigang Qu

{"title":"Small Sample Size and Experience-Independent Hydrate and Pipeline Leakage Identification Technique for Natural Gas Pipelines Based on Deep Forest","authors":"Hongping Gao, Xiaocen Wang, Yang An, Zhigang Qu","doi":"10.1007/s40857-022-00285-2","DOIUrl":"10.1007/s40857-022-00285-2","url":null,"abstract":"<div><p>Hydrate blockage and pipeline leakage are two common factors that threaten the safety of natural gas pipelines. However, most of the current research focuses on nonintrusive, passive-like techniques that can only detect one of these abnormal events, with occasional attention to identification technique. This paper introduces an active method to simultaneously detect hydrate blockage and pipeline leakage using intrusive sensors, and further presents a deep forest-based classification method for two types of abnormal events, which aims to avoid the problem that the classification of traditional deep learning depends on huge number of hard-to-acquire samples. Besides, network structure and parameters in deep learning affect the classification performance, and deep forest is just a better solution to this problem. The parameter tuning experiments results of deep forest show that the classification accuracies are mostly 100% whatever in training and testing, proving that different parameter settings have little effect on the classification accuracy. The stability and portability of the classification method are tested, and it is verified that this classification method is easy to implement and has strong universality, which is expected to be applied to other types of natural gas pipeline event classification.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"51 1","pages":"85 - 94"},"PeriodicalIF":1.7,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50017989","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

On the Applicability of Cold Acoustic Measurements to High-Amplitude Hot Pulsating Flows 冷声测量在高振幅热脉动流中的适用性研究

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-10-11 DOI: 10.1007/s40857-022-00282-5

A. J. Torregrosa, P. Piqueras, E. J. Sanchis, Á. Redondo

{"title":"On the Applicability of Cold Acoustic Measurements to High-Amplitude Hot Pulsating Flows","authors":"A. J. Torregrosa, P. Piqueras, E. J. Sanchis, Á. Redondo","doi":"10.1007/s40857-022-00282-5","DOIUrl":"10.1007/s40857-022-00282-5","url":null,"abstract":"<div><p>The experimental characterization of the acoustic characteristics of engine exhaust devices is usually carried out through measurements in cold conditions, due to the intrinsic difficulties associated with proper temperature control in an acoustic rig. While those measurements may be sufficiently indicative for the cold end of the exhaust (the silencing elements) their significance for the hot end (the aftertreatment system) is more doubtful, as a result of the high temperatures and, eventually, the higher amplitude of pressure waves acting on the system. In this paper, a direct assessment is provided on the significance of acoustic measurements in cold conditions for representing the actual behaviour of an aftertreatment system in a hot pulsating, engine-like flow. Making use of wave decomposition techniques, the measured characterization was convoluted with the hot-flow excitation and the device responses were directly compared. The results indicate that, while it is not possible to fully reproduce the behaviour observed in hot pulsating flow, the tendencies are reproduced, at least qualitatively. In particular, the effect of soot loading is fairly reproduced.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"51 1","pages":"115 - 128"},"PeriodicalIF":1.7,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50019944","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 : 2022-10-05 DOI: 10.1007/s40857-022-00281-6

引用次数: 0

Assessment of Two Audio-Recording Methods for Remote Collection of Vocal Biomarkers Indicative of Tobacco Smoking Harm 两种录音方法对远程采集烟草危害生物标志物的评价

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-09-26 DOI: 10.1007/s40857-022-00279-0

Marewa Glover, Marie-France Duhamel

{"title":"Assessment of Two Audio-Recording Methods for Remote Collection of Vocal Biomarkers Indicative of Tobacco Smoking Harm","authors":"Marewa Glover, Marie-France Duhamel","doi":"10.1007/s40857-022-00279-0","DOIUrl":"10.1007/s40857-022-00279-0","url":null,"abstract":"<div><p>This study aimed to determine if self-complete at-home recordings could produce audio samples of sufficient quality for use in voice analysis software, and if audio samples of similar or sufficient quality could be extracted from audio-recorded naturalistic phone interviews. Data were obtained from 31 adults aged 18 years and over who smoked. The /a/ sound segment was manually isolated, and analysis functions were used to produce the following values: fundamental frequency, jitter, shimmer, noise ratio, formant 3, and formant 4. The /a/ sound segment was then manually isolated from audio recordings of naturalistic interviews previously conducted by phone. These were analysed in the same way and compared for quality against Evistr-recorded audio samples from the same participants. A third audio sample consisted of an Evistr or phone-recorded sustained phonation of the /a/ sound. Means and standard deviations were calculated for the target vocal parameters. Statistical comparisons for quality of sound segment were conducted for readings, interviews, and vowel phonation and for sound signals extracted via both recording methods. Self-recording by adults who smoked provided audio samples of sufficient quality for analysis of vocal features that have been associated with a clinical outcome. The values obtained for sustained phonation audio samples displayed the least perturbation and noise for the vocal parameters surveyed. Sound signals recorded with smartphones appeared to be affected by electronic interference but have potential for use in diagnostic tools for measuring vocal parameters.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"51 1","pages":"39 - 52"},"PeriodicalIF":1.7,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40857-022-00279-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50048605","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: 1

Numerical and Experimental Study of the Effect of the Bridge of Sarasvati Veena on its Timbre 琴桥对其音色影响的数值与实验研究

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-09-19 DOI: 10.1007/s40857-022-00280-7

Chandrashekhar Chauhan, Pravin Singru, Radhika Vathsan

{"title":"Numerical and Experimental Study of the Effect of the Bridge of Sarasvati Veena on its Timbre","authors":"Chandrashekhar Chauhan, Pravin Singru, Radhika Vathsan","doi":"10.1007/s40857-022-00280-7","DOIUrl":"10.1007/s40857-022-00280-7","url":null,"abstract":"<div><p>The Sarasvati Veena is an Indian stringed musical instrument with a curved bridge having a parabolic equation. We study the effect of such a bridge on the timbre of the instrument. We model the interaction of the vibrating string with the bridge as frictionless impact. So we implemented an energy-conserving method where string–bridge interaction is modelled with a penalty approach. We solve the resulting Hamilton’s equations numerically. Simulations are performed with different values of bridge parameters, namely slope and curvature. The numerical model is validated by comparison with experimental analysis. We isolate the contribution of the bridge by mounting it on the sonometer in place of one of its knife-edges and a mechanism is provided on the sonometer to change the bridge slope. We mounted the sonometer on foam to minimize the effect of other structural parameters. The typical Veena timbre shows sustain of most harmonics and the revival of higher harmonics with time. These features are attributed to the shape of the metallic layer at the top of the Veena bridge, its slope and curvature. Our model also shows these features, which are further corroborated by the experiment.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"51 1","pages":"53 - 66"},"PeriodicalIF":1.7,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50038146","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

Application of Dual-Source Modal Dispersion and Variational Bayesian Monte Carlo Method for Local Geoacoustic Inversion in Weakly Range-Dependent Shallow Water 双源模态色散和变分贝叶斯蒙特卡罗方法在弱距离相关浅水局部地声反演中的应用

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-08-25 DOI: 10.1007/s40857-022-00277-2

Wang Hao, Rui Duan, Kunde Yang

{"title":"Application of Dual-Source Modal Dispersion and Variational Bayesian Monte Carlo Method for Local Geoacoustic Inversion in Weakly Range-Dependent Shallow Water","authors":"Wang Hao, Rui Duan, Kunde Yang","doi":"10.1007/s40857-022-00277-2","DOIUrl":"10.1007/s40857-022-00277-2","url":null,"abstract":"<div><p>Most of the continental shelf area is a weakly range-dependent shallow-water environment. Compared with range-independent Bayesian geoacoustic inversion, range-dependent inversion usually has problems with the complex forward model and low efficiency for posterior analysis. According to the adiabatic normal-mode theory, the weakly range-dependent shallow-water environment can be divided into a series of range-independent segments; thus, this paper proposes a dual-source modal dispersion inversion method for local geoacoustic parameters of a segment based on a range-independent forward model. In addition, considering that the computational cost of the forward model limits the application of sampling-based methods for posterior analysis, a novel approximate variational inference, namely variational Bayesian Monte Carlo, is applied in this study. It has superior efficiency and shows similar accuracy compared with Markov Chain Monte Carlo sampling. This work is demonstrated in the shallow-water experiment in the continental shelf area of the East China Sea, and the results indicate that the local and range-dependent geoacoustic parameters are well-estimated.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"51 1","pages":"23 - 38"},"PeriodicalIF":1.7,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50102554","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

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":"50 3","pages":"393 - 403"},"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