The Journal of the Acoustical Society of America最新文献_第10页

Enhancing remote sensing of water temperature using acoustic tomography and 3-D-RPS algorithm 利用声学层析成像和 3-D-RPS 算法加强水温遥感

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023038

Yixin Gao, Xinyi Xie, Danni Wei, Haocai Huang

{"title":"Enhancing remote sensing of water temperature using acoustic tomography and 3-D-RPS algorithm","authors":"Yixin Gao, Xinyi Xie, Danni Wei, Haocai Huang","doi":"10.1121/10.0023038","DOIUrl":"https://doi.org/10.1121/10.0023038","url":null,"abstract":"Remote sensing of water temperature and flow dynamics is of paramount importance for water environment management. Coastal acoustic tomography (CAT), an innovative method for remote sensing in underwater environments, utilizes the dual-way travel time of multiple sound paths to reconstruct the underwater temperature field. However, the transmission experiments are susceptible to data noise caused by station drift and inaccuracies in travel time extraction. In this study, a three-dimensional Rousseeuw Phase-Space (3-D-RPS) thresholding algorithm is proposed to remove outliers in the travel time data obtained from Huangcai Reservoir using three CAT systems on September 16, 2020. Additionally, this work includes grid partitioning based on sound path propagation, calculation of sound path lengths, and reference transmission time within each grid, construction of a sparse matrix, and inversion of the two-dimensional temperature field and its associated inversion error. The accuracy and applicability of the proposed method are confirmed through a comparison with data obtained from temperature–depth (TD) sensors. The results demonstrate the precision and suitability of this approach. By effectively mitigating the impact of station drift and extraction accuracy issues, this method provides a reliable temperature field estimation.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"242 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139327752","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

Depth-resolved reconstruction of anisotropic elastic moduli in a crosslinked cornea with wave-based optical coherence elastography 用基于波的光学相干弹性成像技术深度分辨重建交联角膜的各向异性弹性模量

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0022910

G. Regnault, Agathe Marmin, Ruikang K. Wang, Tueng T. Shen, Matthew O’Donnell, I. Pelivanov

{"title":"Depth-resolved reconstruction of anisotropic elastic moduli in a crosslinked cornea with wave-based optical coherence elastography","authors":"G. Regnault, Agathe Marmin, Ruikang K. Wang, Tueng T. Shen, Matthew O’Donnell, I. Pelivanov","doi":"10.1121/10.0022910","DOIUrl":"https://doi.org/10.1121/10.0022910","url":null,"abstract":"Ectatic changes in the cornea are typically marked by corneal thinning with increased corneal deformation and curvature, often leading to high levels of myopia and irregular astigmatism. The most common form of ectasia is keratoconus. Corneal collagen crosslinking (CXL) is commonly used to prevent or treat keratoconus. Limited penetration of CXL into the cornea may lead to a demarcation between treated and untreated regions, suggesting a two-layer structure after the treatment. Although corneal topography can be used to monitor corneal curvature changes pre- and post-surgery, it cannot predict surgical outcomes without mapping corneal elasticity. Recent studies in non-contact dynamic optical coherence elastography (OCE) demonstrated promise in quantifying changes in corneal anisotropic stiffness induced by CXL. However, depth dependent reconstruction of corneal elastic moduli following CXL remains challenging. Here, we show that the thickness of the crosslinked corneal layer can be determined from structural OCT, whereas its mechanical moduli can be reconstructed from acoustic micro-tapping (AuT) OCE using an analytical two-layer model of guided wave propagation. In addition, we discuss how the elastic moduli of partially CXL-treated cornea layers reflect the effective engineering stiffness of the entire cornea to properly quantify corneal deformation.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"291 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139327767","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

Whales, wind, and whale watching—Uncovering the secret soundscape of Geographe Bay 鲸鱼、风和观鲸--揭秘乔治拉普海湾的声音景观

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023512

Capri D. Jolliffe, Craig McPherson, Ian Wiese

{"title":"Whales, wind, and whale watching—Uncovering the secret soundscape of Geographe Bay","authors":"Capri D. Jolliffe, Craig McPherson, Ian Wiese","doi":"10.1121/10.0023512","DOIUrl":"https://doi.org/10.1121/10.0023512","url":null,"abstract":"Quantifying the acoustic soundscape of an area is an important precursor to understanding the significance of that area from an environmental perspective, as well as providing useful environmental context to inform environmental management. Underwater soundscapes provide important contextual information about the use of that habitat by marine fauna species as well as some of the anthropogenic stressors that may be present. Multi-year acoustic data collected from an underwater acoustic recorder near Cape Naturalist in Geographe Bay was used to characterize the underwater soundscape and complete an initial assessment of cetacean presence. Ambient noise conditions within the Bay were characterized, providing an interim baseline of the ambient noise conditions within the Bay, identifying the biological and anthropogenic contributors to the soundscape. This characterization provided a better understanding of species presence within the Bay and general trends in occurrence, and has also been used to investigate the scale and extent of existing anthropogenic pressures. The information from the monitoring program has been applied to better understand the value of the Geographe Bay area to different species, while at the same time setting a benchmark for ongoing monitoring efforts and providing inputs into detection range modeling to assist in enhancing program design.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139327823","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

On coherently processing multiple arrays in underwater environments with spatial coherence losses from random medium effects and sensor position uncertainties 在随机介质效应和传感器位置不确定性造成空间相干性损失的水下环境中，对多个阵列进行相干处理

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023732

I. Kirsteins, A. Abawi

{"title":"On coherently processing multiple arrays in underwater environments with spatial coherence losses from random medium effects and sensor position uncertainties","authors":"I. Kirsteins, A. Abawi","doi":"10.1121/10.0023732","DOIUrl":"https://doi.org/10.1121/10.0023732","url":null,"abstract":"Under ideal circumstances coherently beamforming multiple distributed arrays should provide improvements over the standard approach of processing the arrays individually and combining them incoherently. These include improved directivity and higher gain. However, two major challenges when coherently processing spatially separated arrays in a real ocean are dealing with coherence losses or wave front distortions caused by random medium effects like internal waves and uncertainties in sensor locations. Some of the consequences are degraded beampatterns and poorer array directivity. In this paper, we perform a simulation-based study utilizing numerical propagation models along with theory examining the effects of wave front distortions induced by random medium effects like internal waves and sensor position uncertainties on coherently beamforming distributed arrays in representative ocean waveguides. Realistic realizations of wave front distortions are generated from actual internal wave measurements and models. The sensitivities of coherent processing to these effects are characterized by resultant beampatterns and losses in array directivity along with a quantification of the tolerances.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139328151","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

Narrowband underwater vector sensor using michroelectromechanical systems 使用微机电系统的窄带水下矢量传感器

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023306

Fabio Alves, Justin Ivancic

{"title":"Narrowband underwater vector sensor using michroelectromechanical systems","authors":"Fabio Alves, Justin Ivancic","doi":"10.1121/10.0023306","DOIUrl":"https://doi.org/10.1121/10.0023306","url":null,"abstract":"A narrowband underwater vector sensor using microelectromechanical (MEMS) systems is demonstrated. A combination of two pressure gradient MEMS sensors and an omnidirectional hydrophone allows for determination of the direction of arrival (DOA) of income sound over 360 degrees azimuth. The MEMS sensors, inspired on the hearing system of the Ormia-ochracea fly, consist of two wings connected by a bridge and anchored to the substrate by a tortional bean. They are operated with open back to allow a cosine dependence with the angle of incidence in the predominant bending vibrational mode. In the vector sensor, two MEMS sensors are orthogonally arranged to provide a cosine and sine directional pattern. When combined with an omnidirectional hydrophone that shares the same phase center, an arctangent estimator is used for DOA determination. The MEMS sensors are operated near resonance to filter out noise coming from undesired bands and improve the signal-to-noise ratio. A correction algorithm is applied to compensate frequency response differences. Two configurations have been demonstrated with the MEMS sensors enclosed in silicone oil and in air. The standard deviation of the measured DOA error has been computed for both configurations to be less than 5 degrees for various types of sound stimuli.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139328269","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

Comparative analysis of the heavy-weight floor impact noises using various shapes of EVA resilient materials 使用不同形状的 EVA 弹性材料对重型地板冲击噪音进行比较分析

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023013

Jakin Lee, Chan-Hoon Haan

{"title":"Comparative analysis of the heavy-weight floor impact noises using various shapes of EVA resilient materials","authors":"Jakin Lee, Chan-Hoon Haan","doi":"10.1121/10.0023013","DOIUrl":"https://doi.org/10.1121/10.0023013","url":null,"abstract":"Social issues concerning the floor impact noises are increasing as apartments are being increased in Korea. The present study aims to improve the floor impact noises using various shapes of EVA resilient materials in composite floor structures. In order to this, three different shapes of EVA resilient materials were used including flat plate type, deck plate type, and cavity type of EVA. boards. All the composite structure consisted of PP panel, PET sound absorption materials and EVA resilient materials with a total depth of 40mm. Also, each shape of EVA has two different types according to the use of foothold of EVA materials. For the mount type of structure, the used numbers of EVA foothold was 25, 56, and 41 per 1 m2 of area. All the floor impact noise measurements were done at the recognized testing authority using impact ball as the standard heavy-weight floor impact sound source. The values of L’i, Fmax, and AW were deduced from every measurements. As a result, regardless of the EVA shapes, better performances were drawn when EVA footholds were used, i. e., mount type. It was shown that the average L’i, Fmax, and AW value of mount types was 41–42dB while average value of 47–48 dB for deck plate type. 50–55 dB for flat plate and cavity type were measured. It can be recognized that the good performance of mount type EVA materials is caused by the air layer gap around the EVA footholds as well as the low dynamic elastic modulus of EVA.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139328360","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

Developing methodologies to correlate perceived sound qualities of violins with controlled construction parameters 开发将小提琴的感知音质与受控结构参数相关联的方法

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023671

Claudia Fritz

{"title":"Developing methodologies to correlate perceived sound qualities of violins with controlled construction parameters","authors":"Claudia Fritz","doi":"10.1121/10.0023671","DOIUrl":"https://doi.org/10.1121/10.0023671","url":null,"abstract":"The holy grail for violin makers is to find correlations between construction parameters and sound qualities. This is challenging for two main reasons: it is difficult to build violins reliably enough to ensure that the change in the sound is indeed a result of the change of construction parameters; when listening to the violins being played, differences seem to be smoothed out by the players who adapt very quickly. Therefore, while players had so far been preferred in our experiments to maximize the ecological validity and take into account the complexity of the interaction between the player and the instrument, we have decided to test whether other methods, which reduce the influence of the player but are quite artificial, may be useful to explore the influence of some construction parameters on the tone. In the context of two sets of violins built with controlled thickness variations of their plates, we will compare the results of listening tests based on real recordings with a player and with a bowing machine as well as synthesized recordings (from the convolution of an excerpt recorded with piezo sensors and radiation measurements in an anechoic chamber) and discuss them in the light of audio descriptors on the recordings and vibroacoustical measurements on the violins.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139328394","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

Measured turbulence statistics from two NASA sonic boom test campaigns 美国国家航空航天局两次音爆试验活动中测量到的湍流统计数据

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023076

Mark C. Anderson, Kent L Gee, Kaylee Nyborg, A. Loubeau

{"title":"Measured turbulence statistics from two NASA sonic boom test campaigns","authors":"Mark C. Anderson, Kent L Gee, Kaylee Nyborg, A. Loubeau","doi":"10.1121/10.0023076","DOIUrl":"https://doi.org/10.1121/10.0023076","url":null,"abstract":"Turbulence in the lower atmosphere can have substantial effects on measured sonic boom waveforms on the ground. These turbulent distortions vary spatially and temporally and are best understood statistically. Simultaneous atmospheric and acoustic data were acquired as part of the NASA Sonic Booms in Atmospheric Turbulence (SonicBAT) and Carpet Determination in Entirety Measurements (CarpetDIEM) tests. Data from these tests, both conducted at NASA Armstrong Flight Research Center, enable a detailed study of atmospheric effects on sonic boom waveforms. The present study expands on previous work [Anderson et al., J. Acoust. Soc. Am. 152, A127 (2022)] by analyzing more booms with additional statistical analyses including metric distributions, standard deviations, and confidence intervals. Results from CarpetDIEM indicate that the confidence interval widths of mean metric levels computed across a seven-microphone array spanning 122 m vary by 1-5 dB, depending on the loudness metric. The effects of peak clipping are also considered, and an analysis is conducted to determine how to best recover from peak clipping for different metrics. [Work supported by NASA Langley Research Center through the National Institute of Aerospace and Analytical Mechanics Associates.]","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139328418","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 acoustic metasphere. A solution to improving speech intelligibility and acoustic measurements 声学元球。改善语音清晰度和声学测量的解决方案

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0023260

Gregory Hernandez, Junfei Li, S. Cummer

{"title":"The acoustic metasphere. A solution to improving speech intelligibility and acoustic measurements","authors":"Gregory Hernandez, Junfei Li, S. Cummer","doi":"10.1121/10.0023260","DOIUrl":"https://doi.org/10.1121/10.0023260","url":null,"abstract":"The application of acoustic metamaterials has found utility in several disciplines ranging from biomedical ultrasound to architectural acoustics, and even the music industry. However, an underlying complication with these devices is their narrow bandwidth which limits the effectiveness of acoustic metamaterials in research and industry. Additionally, within architectural acoustics and noise control engineering, an issue that arises is speech intelligibility and clarity of the source. For example, within a populated and dense environment, such as an airport or shopping market, loudspeakers are placed every several feet to surmount the beaming directionality of these transducers at higher frequencies. Also, consequently, the gain must then be high enough to overcome this beaming effect and the noise floor generated by the environment and its occupants. Moreover, methods to more efficiently and cost effectively characterize the response of an acoustic space are needed to improve upon the noise control efforts within these locations. A solution to these obstacles is proposed with an acoustic metamaterial called the Acoustic Metasphere. Utilizing various twisting unit cells that fully envelop a loudspeaker, we demonstrate here that this acoustic metamaterial can improve the limitation of a loudspeaker due to its directionality, while simultaneously increasing the bandwidth of operation for this engineered structure.","PeriodicalId":256727,"journal":{"name":"The Journal of the Acoustical Society of America","volume":"129 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139328443","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

Acoustic radiation from a baffled finite shell in an underwater waveguide 水下波导中来自障板有限壳体的声辐射

The Journal of the Acoustical Society of America Pub Date : 2023-10-01 DOI: 10.1121/10.0022776

Jamie Kha, Mahmoud Karimi, L. Maxit

引用次数: 0