Acoustics (Basel, Switzerland)最新文献

Data-Driven Discovery of Anomaly-Sensitive Parameters from Uvula Wake Flows Using Wavelet Analyses and Poincaré Maps 基于小波分析和poincarcarcars图的小舌尾流异常敏感参数的数据驱动发现

Acoustics (Basel, Switzerland) Pub Date : 2023-11-02 DOI: 10.3390/acoustics5040060

Xiuhua Si, Junshi Wang, Haibo Dong, Jinxiang Xi

{"title":"Data-Driven Discovery of Anomaly-Sensitive Parameters from Uvula Wake Flows Using Wavelet Analyses and Poincaré Maps","authors":"Xiuhua Si, Junshi Wang, Haibo Dong, Jinxiang Xi","doi":"10.3390/acoustics5040060","DOIUrl":"https://doi.org/10.3390/acoustics5040060","url":null,"abstract":"This study presents a data-driven approach to identifying anomaly-sensitive parameters through a multiscale, multifaceted analysis of simulated respiratory flows. The anomalies under consideration include a pharyngeal model with three levels of constriction (M1, M2, M3) and a flapping uvula with two types of kinematics (K1, K2). Direct numerical simulations (DNS) were implemented to solve the wake flows induced by a flapping uvula; instantaneous vortex images, as well as pressures and velocities at seven probes, were recorded for twelve cycles. Principal component analysis (PCA), wavelet-based multifractal spectrum and scalogram, and Poincaré mapping were implemented to identify anomaly-sensitive parameters. The PCA results demonstrated a reasonable periodicity of instantaneous vortex images in the leading vector space and revealed distinct patterns between models with varying uvula kinematics (K1, K2). At higher PCA ranks, the periodicity gradually decays, eventually transitioning to a random pattern. The multifractal spectra and scalograms of pressures in the pharynx (P6, P7) show high sensitivity to uvula kinematics, with the pitching mode (K2) having a wider spectrum and a left-skewed peak than the heaving mode (K1). Conversely, the Poincaré maps of velocities and pressures in the pharynx (Vel6, Vel7, P6, P7) exhibit high sensitivity to pharyngeal constriction levels (M1–M3), but not to uvula kinematics. The parameter sensitivity to anomaly also differs with the probe site; thus, synergizing measurements from multiple probes with properly extracted anomaly-sensitive parameters holds the potential to localize the source of snoring and estimate the collapsibility of the pharynx.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"2 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135934409","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

Importance of Noise Hygiene in Dairy Cattle Farming—A Review 噪声卫生在奶牛养殖中的重要性综述

Acoustics (Basel, Switzerland) Pub Date : 2023-11-01 DOI: 10.3390/acoustics5040059

Dimo Dimov, Toncho Penev, Ivaylo Marinov

引用次数: 0

Finite Element–Boundary Element Acoustic Backscattering with Model Reduction of Surface Pressure Based on Coherent Clusters 基于相干簇表面压力模型降低的有限元-边界元声后向散射

Acoustics (Basel, Switzerland) Pub Date : 2023-10-31 DOI: 10.3390/acoustics5040058

Petr Krysl, Ahmad T. Abawi

引用次数: 0

Applying New Algorithms for Numerical Integration on the Sphere in the Far Field of Sound Pressure 声压球面远场数值积分新算法的应用

Acoustics (Basel, Switzerland) Pub Date : 2023-10-28 DOI: 10.3390/acoustics5040057

Stjepan Piličić, Ante Skoblar, Roberto Žigulić, Luka Traven

{"title":"Applying New Algorithms for Numerical Integration on the Sphere in the Far Field of Sound Pressure","authors":"Stjepan Piličić, Ante Skoblar, Roberto Žigulić, Luka Traven","doi":"10.3390/acoustics5040057","DOIUrl":"https://doi.org/10.3390/acoustics5040057","url":null,"abstract":"For some sound sources, the function of the square of sound pressure amplitudes on the sphere in the far field is an integrable function or can be integrated with geometrical simplifications, so an exact or approximated analytical expression for the sound power can be calculated. However, often the sound pressure on the sphere in the far field can only be defined in discrete points, for which a numerical integration is required for the calculation of the sound power. In this paper, two new algorithms, Anchored Radially Projected Integration on Spherical Triangles (ARPIST) and Spherical Quadrature Radial Basis Function (SQRBF), for surface numerical integration are used to calculate the sound power from the sound pressures on the sphere surface in the far field, and their solutions are compared with the analytical and the finite element method solution. If function values are available at any location on a sphere, ARPIST has a greater accuracy and stability than SQRBF while being faster and easier to implement. If function values are available only at user-prescribed locations, SQRBF can directly calculate weights while ARPIST needs data interpolation to obtain function values at predefined node locations, which reduces the accuracy and increases the calculation time.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136231733","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

Sound Environment during Dental Treatment in Relation to COVID-19 Pandemic 与COVID-19大流行有关的牙科治疗过程中的声音环境

Acoustics (Basel, Switzerland) Pub Date : 2023-10-26 DOI: 10.3390/acoustics5040056

Tomomi Yamada, Kazunori Nozaki, Mikako Hayashi, Sonoko Kuwano

{"title":"Sound Environment during Dental Treatment in Relation to COVID-19 Pandemic","authors":"Tomomi Yamada, Kazunori Nozaki, Mikako Hayashi, Sonoko Kuwano","doi":"10.3390/acoustics5040056","DOIUrl":"https://doi.org/10.3390/acoustics5040056","url":null,"abstract":"This study delves into the acoustic environment within dental clinics, particularly focusing on the impact of extraoral suction devices employed for infection control amid the COVID-19 pandemic. The research encompasses a comprehensive investigation, including a questionnaire survey of dental professionals, sound level measurements at suction device openings, acoustic imaging, and a detailed analysis of sound levels and their spectral characteristics during dental procedures. Additionally, ambient sound levels within clinical settings were monitored over two consecutive days. The findings reveal notable observations. Dental professionals expressed concerns regarding increased sound levels and associated distress caused by extraoral suction device operation. Objective measurements identified varying A-weighted sound pressure levels ranging from 86.0 dB to 96.7 dB at suction device openings, highlighting elevated sound pressure levels and a wide frequency range, especially in the vicinity of both the dentist and the patient’s facial area during dental aerosol procedures. On the other hand, for the entire clinical room, the equivalent continuous A-weighted sound pressure level during the consultation hours was not considered problematic. In light of these findings, it becomes evident that there is a pressing necessity to refine the acoustic characteristics of extraoral suction devices to foster a more accommodating acoustic environment for both patients and dental healthcare professionals within dental clinics.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"23 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134909079","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

A Novel Algorithm for Directional Scattering in Acoustic Ray Tracers 一种新的声射线追踪器定向散射算法

Acoustics (Basel, Switzerland) Pub Date : 2023-10-24 DOI: 10.3390/acoustics5040054

Hanna Autio, Erling Nilsson

引用次数: 0

On the Influence of Scattered Errors over Full-Field Receptances in the Rayleigh Integral Approximation of Sound Radiation from a Vibrating Plate 振动板声辐射瑞利积分近似中散射误差对全场接收的影响

Acoustics (Basel, Switzerland) Pub Date : 2023-10-24 DOI: 10.3390/acoustics5040055

Alessandro Zanarini

{"title":"On the Influence of Scattered Errors over Full-Field Receptances in the Rayleigh Integral Approximation of Sound Radiation from a Vibrating Plate","authors":"Alessandro Zanarini","doi":"10.3390/acoustics5040055","DOIUrl":"https://doi.org/10.3390/acoustics5040055","url":null,"abstract":"Spatially dense operative deflection shapes and receptances, acquired in broad frequency bands, increase the detail in the spatial and frequency domains of the responses of parts in actual dynamic loading, manufacturing and mounting conditions. This work remarks the potential benefits of greater spatial resolution in the Rayleigh integral approximation of sound pressure—here reformulated to exploit the increased quality output from experiment-based optical full-field technologies in contactless structural dynamics—radiated by a vibrating surface in a broad frequency band. But in some cases the noise that is scattered over the estimated receptance maps might be heavier, or with different patterns, than expected, with potential repercussions on the sound pressure simulations that come thereof. This work covers this specific latter issue with insight over examples from experiment-based receptances of a lightweight vibrating plate. The effects of error spreading are analysed in the space and frequency domains, with special attention to the contribution of the experiment-based full-field receptance maps to the accuracy of the vibro-acoustic frequency response function maps.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"41 9-10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135266747","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

Digital Twin for Acoustics and Stage Craft Facility Management in a Multipurpose Hall 多功能厅声学和舞台工艺设施管理的数字孪生

Acoustics (Basel, Switzerland) Pub Date : 2023-10-12 DOI: 10.3390/acoustics5040053

Maria Cairoli, Lavinia Chiara Tagliabue

引用次数: 0

The Effect of the Frequency and Energetic Content of Broadband Noise on the Lombard Effect and Speech Intelligibility 宽带噪声的频率和能量含量对朗伯德效应和语音清晰度的影响

Acoustics (Basel, Switzerland) Pub Date : 2023-10-10 DOI: 10.3390/acoustics5040052

Pasquale Bottalico, Silvia Murgia

{"title":"The Effect of the Frequency and Energetic Content of Broadband Noise on the Lombard Effect and Speech Intelligibility","authors":"Pasquale Bottalico, Silvia Murgia","doi":"10.3390/acoustics5040052","DOIUrl":"https://doi.org/10.3390/acoustics5040052","url":null,"abstract":"The Lombard effect is an unconscious reflex of speakers to increase vocal effort when disturbed by noise, aiming to enhance speech intelligibility. This study aims to evaluate the effect of noise with different energetic content and levels at various frequencies on the Lombard effect, communication disturbance, vocal comfort, and speech intelligibility. Twenty university students participated in the study, reading a six-sentence excerpt and performing an intelligibility test under 12 randomized noise conditions. These conditions included noises at low (20–500 Hz), medium (500–4000 Hz), and high frequencies (4000–20,000 Hz), at four levels (45 dB, 55 dB, 65 dB, 75 dB). After each condition, participants rated their perceived communication disturbance and vocal discomfort. The results indicated that noise with energetic content at medium frequencies produced the highest Lombard effect, produced the most detrimental effect on communication disturbance and vocal comfort, and caused the strongest decrease in speech intelligibility, whereas it was minimally affected by low- and high-frequency noise. In conclusion, this study highlights that medium-frequency noise has the greatest impact on vocal effort, communication disturbance, and vocal comfort, while low- and high-frequency noise has minimal effect on speech intelligibility.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"2675 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136358069","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

Experimental Determination of the Masking Threshold for Tonal Powertrain Noise in Electric Vehicles 电动汽车调性动力总成噪声掩蔽阈值的实验确定

Acoustics (Basel, Switzerland) Pub Date : 2023-09-28 DOI: 10.3390/acoustics5040051

Victor Abbink, David Landes, M. Ercan Altinsoy

{"title":"Experimental Determination of the Masking Threshold for Tonal Powertrain Noise in Electric Vehicles","authors":"Victor Abbink, David Landes, M. Ercan Altinsoy","doi":"10.3390/acoustics5040051","DOIUrl":"https://doi.org/10.3390/acoustics5040051","url":null,"abstract":"Tonal powertrain noise can have a strong negative impact on vehicle sound quality. Therefore, an assessment of the perceptibility of tonal noise with respect to masking noise is essential for the vehicle development process. In electric vehicles, due to the missing masking by the combustion engine, new methods are required for this purpose. In this study, listening tests were conducted to determine the masking threshold in the electric vehicle interior for various driving speeds (30 km/h, 60 km/h, and 90 km/h) with an Adaptive-Forced-Choice method. The novelty of this study is that it used vehicle interior noise as a masker, compared to broadband or narrowband white and pink noises. It could be shown that the masking threshold in electric vehicles strongly depends on the driving speed, and the investigated interior noise mainly affects frequencies up to 6400 Hz in this speed range. For frequencies greater than 6400 Hz, the masking noise has no significant effect on perceptibility of tonal noise in the investigated vehicle, and only the subjects’ individual absolute threshold of hearing is relevant. Additionally, a strong variation in the masking threshold between the subjects was found for high frequencies. With these results, methods that estimate masking thresholds in electric vehicles can be improved. Furthermore, threshold targets can be adjusted for different customer groups.","PeriodicalId":72045,"journal":{"name":"Acoustics (Basel, Switzerland)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135388266","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