Acoustics (Basel, Switzerland)最新文献_第5页

Sustainable Sound Absorbers to Improve Acoustical Comfort in Atria: A Methodological Approach 提高中庭声学舒适性的可持续吸声材料：一种方法论方法

Acoustics (Basel, Switzerland) Pub Date : 2023-03-06 DOI: 10.3390/acoustics5010017

Chiara Rubino, S. Liuzzi, F. Martellotta

{"title":"Sustainable Sound Absorbers to Improve Acoustical Comfort in Atria: A Methodological Approach","authors":"Chiara Rubino, S. Liuzzi, F. Martellotta","doi":"10.3390/acoustics5010017","DOIUrl":"https://doi.org/10.3390/acoustics5010017","url":null,"abstract":"Resource-efficient buildings are one of the most important challenges of the construction industry, which could be achieved by limiting the extraction of natural resources and by replacing them with industrial residues. The present work proposes innovative panels made from textile wastes as an efficient solution for making the semi-open atrium in the Polytechnic University of Bari, acoustically suitable for use as an area of study. Several measurements were carried out in the atrium under empty and occupied conditions in order to characterize the sound field of the space (i.e., the reverberation time and the sound pressure level) and the actual sound sources (i.e., the sound power level of the students occupying the space). The on-site measurement results were useful to calibrate a geometrical acoustic model implemented in CATT-Acoustic software and used to predict the effect of the proposed treatments. About 700 m2 of absorbent panels were distributed, leading to a predicted reduction in the reverberation time from 2.4 s to 1.4 s at 500 Hz, and consequently to an estimated 3 dB reduction in sound pressure level, resulting in a reduction in the background noise level due to speech. Furthermore, as a consequence of the “Lombard effect”, a decrease in the background noise level will likely reduce the sound power level of the speakers by 2 dB, with an expected overall reduction of 5 dB.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43174022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Bacinete Main Shelter: A Prehistoric Theatre? 摇篮主避难所：史前剧场？

Acoustics (Basel, Switzerland) Pub Date : 2023-03-06 DOI: 10.3390/acoustics5010018

L. Álvarez-Morales, Neemias Santos da Rosa, Daniel Benítez-Aragón, Laura Fernández Macías, María Lazarich, M. Díaz‐Andreu

{"title":"The Bacinete Main Shelter: A Prehistoric Theatre?","authors":"L. Álvarez-Morales, Neemias Santos da Rosa, Daniel Benítez-Aragón, Laura Fernández Macías, María Lazarich, M. Díaz‐Andreu","doi":"10.3390/acoustics5010018","DOIUrl":"https://doi.org/10.3390/acoustics5010018","url":null,"abstract":"In the last few years, archaeoacoustic studies of rock art sites and landscapes have undergone significant growth as a result of renewed interest in the intangible aspects of the archaeological record. This article focuses on the acoustic study carried out in the rock art complex of Bacinete, Cádiz (Spain). After describing the archaeological site and its importance, a representative set of monaural and spatial IRs gathered onsite is thoroughly analysed to explore the hypothesis that the sonic component of the site played an important role in how prehistoric people interacted with it. Additionally, we briefly discuss the challenges of analysing the acoustics of open-air spaces following the recommendations of the ISO 3382-1 guidelines, a standard developed not for open-air spaces, but for room acoustics. The results obtained confirm the favourable acoustic conditions of the Bacinete main shelter for speech transmission. The different subjective acoustic impressions obtained in a somewhat similar shelter located nearby, Bacinete III, are also explained, alluding to a lesser degree of intimacy felt in the latter.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41455210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Prediction of Head Related Transfer Functions Using Machine Learning Approaches 利用机器学习方法预测头部相关传递函数

Acoustics (Basel, Switzerland) Pub Date : 2023-03-01 DOI: 10.3390/acoustics5010015

R. Fernandez Martinez, P. Jimbert, E. M. Sumner, M. Riedel, Runar Unnthorsson

{"title":"Prediction of Head Related Transfer Functions Using Machine Learning Approaches","authors":"R. Fernandez Martinez, P. Jimbert, E. M. Sumner, M. Riedel, Runar Unnthorsson","doi":"10.3390/acoustics5010015","DOIUrl":"https://doi.org/10.3390/acoustics5010015","url":null,"abstract":"The generation of a virtual, personal, auditory space to obtain a high-quality sound experience when using headphones is of great significance. Normally this experience is improved using personalized head-related transfer functions (HRTFs) that depend on a large degree of personal anthropometric information on pinnae. Most of the studies focus their personal auditory optimization analysis on the study of amplitude versus frequency on HRTFs, mainly in the search for significant elevation cues of frequency maps. Therefore, knowing the HRTFs of each individual is of considerable help to improve sound quality. The following work proposes a methodology to model HRTFs according to the individual structure of pinnae using multilayer perceptron and linear regression techniques. It is proposed to generate several models that allow knowing HRTFs amplitude for each frequency based on the personal anthropometric data on pinnae, the azimuth angle, and the elevation of the sound source, thus predicting frequency magnitudes. Experiments show that the prediction of new personal HRTF generates low errors, thus this model can be applied to new heads with different pinnae characteristics with high confidence. Improving the results obtained with the standard KEMAR pinna, usually used in cases where there is a lack of information.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43124384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

All Acoustical Excitation of Spin Waves in High Overtone Bulk Acoustic Resonator 高泛音体腔中自旋波的全声激发

Acoustics (Basel, Switzerland) Pub Date : 2023-03-01 DOI: 10.3390/acoustics5010016

S. Alekseev, N. Polzikova, V. Luzanov

{"title":"All Acoustical Excitation of Spin Waves in High Overtone Bulk Acoustic Resonator","authors":"S. Alekseev, N. Polzikova, V. Luzanov","doi":"10.3390/acoustics5010016","DOIUrl":"https://doi.org/10.3390/acoustics5010016","url":null,"abstract":"The hybrid high overtone bulk acoustic wave resonators (HBARs) consisting of a piezoelectric film transducers and gallium gadolinium garnet substrates with yttrium iron garnet films (YIG-GGG-YIG) are used for experimental excitation and detection of acoustically driven spin waves (ADSWs). Two types of HBAR transducers made of Al-ZnO-Al films (differed through the electrodes’ geometry) were deposited onto YIG-GGG-YIG trilayers with different YIG film thicknesses and doping levels and served for excitation of multimode HBAR at gigahertz frequencies. ADSWs were detected by measuring the shifts of resonant HBAR modes in a tangential external magnetic field when the conditions for magnetoelastic resonance (MER) were satisfied. It was shown that the design of the transducer with a continuous bottom electrode provides all acoustical excitation of spin waves (pure ADSWs), suppressing the additional inductive magnetic dynamics excitation due to the electrodes’ geometry. The theoretical study of the HBAR spectrum in a magnetic field showed that the resonance harmonics in the MER region can either almost continuously transfer from one to another, or decay and form an evident magnetoelastic gap. In this case, the shift of resonant frequencies can achieve several intermodal distances. The results obtained are important for applications of HBAR-based devices in spintronics and magnonics.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48737870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Effect of Stimuli Level on Distortion Product Otoacoustic Emission in Normal Hearing Adults. 刺激水平对正常听力成人耳声发射畸变产物的影响。

Acoustics (Basel, Switzerland) Pub Date : 2023-03-01 DOI: 10.3390/acoustics5010005

Maryam Naghibolhosseini

{"title":"The Effect of Stimuli Level on Distortion Product Otoacoustic Emission in Normal Hearing Adults.","authors":"Maryam Naghibolhosseini","doi":"10.3390/acoustics5010005","DOIUrl":"https://doi.org/10.3390/acoustics5010005","url":null,"abstract":"<p><p>The goal of this study is to compare three of the most commonly used primary-level relation paradigms (i.e., Scissors, Boys Town 'Optimal', and Equal-Level) in generation of distortion product otoacoustic emissions (DPOAEs) in normal hearing adults. The generator and reflection components were extracted from DPOAEs in each paradigm. The generator and reflection component levels and input/output (I/O) functions were compared across paradigms and primary-tone levels. The results showed a different I/O function growth behavior across frequency and levels among paradigms. The Optimal paradigm showed a systematic change in the generator and reflection component levels and I/O slopes across primary levels among subjects. Moreover, the levels and slopes in the Optimal paradigm were more distinct across levels with less variations across frequency leading to a systematic change in the DPOAE fine structure across levels. The I/O functions were found to be more sensitive to the selected paradigm; especially the I/O function for the reflection component. The I/O functions of the reflection components showed large variability across frequencies due to different frequency shifts in their microstructure depending on the paradigm. The findings of this study suggested the Optimal paradigm as the proper primary-level relation to study cochlear amplification/compression. The findings of this study shows that care needs to be taken in comparing the findings of different studies that generated DPOAEs with a different level-relation paradigm.</p>","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"5 1","pages":"72-86"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9930411/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10817305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Conventional and Musician-Specific Hearing Protection Devices on Speech Intelligibility 传统和音乐家专用听力保护装置对语音清晰度的影响

Acoustics (Basel, Switzerland) Pub Date : 2023-02-27 DOI: 10.3390/acoustics5010014

Giovanna Cardoso Pinto, C. Rocha, C. Matas, A. G. Samelli

{"title":"Effects of Conventional and Musician-Specific Hearing Protection Devices on Speech Intelligibility","authors":"Giovanna Cardoso Pinto, C. Rocha, C. Matas, A. G. Samelli","doi":"10.3390/acoustics5010014","DOIUrl":"https://doi.org/10.3390/acoustics5010014","url":null,"abstract":"(1) Background: To assess and compare speech intelligibility with conventional and universal musician-specific hearing protection devices (HPD); (2) Methods: The sample comprised 15 normal-hearing musicians of both sexes who had been professionals for more than 5 years. They underwent thorough audiological assessment and free-field audiometry to measure the attenuation levels of three HPD models (musician-specific, silicone, and foam devices). The sentence recognition thresholds in quiet (SRTQ) and noise (SRTN) were assessed with the Lists of Sentences in Portuguese. User satisfaction with musician HPD was assessed after 2 months; (3) Results: Conventional HPD had higher pure-tone mean attenuation levels than musician HPD. No statistically significant differences were found in SRTQ and SRTN between the three HPD types. However, the musician HPD had higher mean signal-to-noise ratios and percentages of correct words from sentences presented in noise than the other HPD. The answers also indicated a positive trend toward satisfaction with the musician-specific HPD; (4) Conclusions: Despite the lack of significant differences in speech intelligibility while wearing the three HPD models in either quiet or noise, the musician-specific HPD provided greater musical sound quality. This reinforces the possibility of an effective and adequate use of protection to preserve musicians’ hearing.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69874692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extra-Auditory Effects from Noise Exposure in Schools: Results of Nine Italian Case Studies 学校噪声暴露的听觉外效应：九项意大利案例研究结果

Acoustics (Basel, Switzerland) Pub Date : 2023-02-24 DOI: 10.3390/acoustics5010013

F. Cotana, F. Asdrubali, G. Arcangeli, S. Luzzi, G. Ricci, Lucia Busa, M. Goretti, Alfonso Tortorella, Paola Pulella, Piergiovanni Domenighini, V. Gambacorta, C. Guattari, Federica Cirimbilli, A. Nicolini, P. Nataletti, D. Annesi, F. Sanjust, L. Cerini

{"title":"Extra-Auditory Effects from Noise Exposure in Schools: Results of Nine Italian Case Studies","authors":"F. Cotana, F. Asdrubali, G. Arcangeli, S. Luzzi, G. Ricci, Lucia Busa, M. Goretti, Alfonso Tortorella, Paola Pulella, Piergiovanni Domenighini, V. Gambacorta, C. Guattari, Federica Cirimbilli, A. Nicolini, P. Nataletti, D. Annesi, F. Sanjust, L. Cerini","doi":"10.3390/acoustics5010013","DOIUrl":"https://doi.org/10.3390/acoustics5010013","url":null,"abstract":"Noise exposure may cause auditory and extra-auditory effects. School teachers and students are exposed to high noise levels which have an impact on perceptual-cognitive and neurobehavioral aspects. The latter influence teaching conditions and student school performance. A Protocol was defined and parameters to be investigated were identified for acoustic characterization of unoccupied and occupied school environments, assessment of users by means of questionnaires completed by teachers and students, and vocal effort evaluation. Classrooms, laboratories, auditoriums, gymnasiums, common areas, canteens and outdoor areas were analysed in terms of acoustic features and identification of the origin of noise. The Protocol was tested in three kindergartens, three primary schools and three secondary schools placed in Rome, Florence and Perugia. Results of nine case studies are presented, including comparisons of objective and subjective investigations. Generally, the acoustic performances of the spaces under investigation do not meet the requirements of current Italian legislation. In particular, student activity determines high noise levels in laboratories, gymnasiums, and canteens. Students notice that noise mainly causes loss of concentration, fatigue, boredom, and headache. The outcomes of this research will be the starting point to define strategies and solutions for noise control and mitigation in schools and to draft guidelines for the acoustical school design.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47864535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Acoustic Reconstruction of the House of Commons, c. 1820–1834 1820-1834年英国下议院的声学再现

Acoustics (Basel, Switzerland) Pub Date : 2023-02-24 DOI: 10.3390/acoustics5010012

Aglaia Foteinou, D. Murphy, J. Cooper

引用次数: 0

The Recycling and Reuse of Natural Materials: Sound Absorbing Box Patterns That Use Waste from Olive Tree Pruning 天然材料的回收和再利用：利用橄榄树修剪废料的吸音盒图案

Acoustics (Basel, Switzerland) Pub Date : 2023-02-05 DOI: 10.3390/acoustics5010011

Rossella Cottone, L. Shtrepi, V. Serra, S. Pagliolico

{"title":"The Recycling and Reuse of Natural Materials: Sound Absorbing Box Patterns That Use Waste from Olive Tree Pruning","authors":"Rossella Cottone, L. Shtrepi, V. Serra, S. Pagliolico","doi":"10.3390/acoustics5010011","DOIUrl":"https://doi.org/10.3390/acoustics5010011","url":null,"abstract":"The agricultural activity of pruning olive trees generates waste which, due to long-standing practices and unawareness of the consequences, are burned on site, thereby producing CO2 emissions in the atmosphere. Therefore, in order to prevent environmental pollution and a waste of resources, the aim of this research investigation was to highlight some alternative uses of the pruning of olive trees waste. This work focuses on recycled and reused by-products as a secondary raw material for the implementation of interior components that can be used for indoor acoustic correction purposes and evaluates their potential as absorbing materials, without overlooking the aesthetic dimension. In this paper, different configurations based on plywood frames with loose olive pruning chips used as a filler, namely, modules and sub-modules, were investigated. Moreover, other technological details, that is, the influence of a Tissue-Non-Tissue (TNT) layer and a spray film coating applied over the external surface of the loose material, were measured. Sound absorption measurements were conducted inside a small-scale reverberation room (SSRR) and the experimental results demonstrated that the samples, for the given thickness, have weighted sound absorption values (αw) of between 0.15 and 0.35 and single third-octave band values that can reach higher values than 0.50 above 500 Hz. The frequency curves and weighted values of the samples in which the influence of TNT and the spray film coating were tested remained unchanged. This is a design aspect that allows absorbing surfaces to be modeled and integrated with existing walls, while maintaining the acoustic performance and the specific aesthetic features of the loose material.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43124780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FEM-BEM Vibroacoustic Simulations of Motion Driven Cymbal-Drumstick Interactions 运动驱动钹-鼓槌相互作用的FEM-BEM振动声学模拟

Acoustics (Basel, Switzerland) Pub Date : 2023-02-02 DOI: 10.3390/acoustics5010010

E. Kaselouris, Stella Paschalidou, Chrisoula Alexandraki, V. Dimitriou

引用次数: 1