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Compressional wave attenuation inversion in the New England Mud Patch. 新英格兰泥区纵波衰减反演。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0046128
Gopu R Potty, James H Miller
{"title":"Compressional wave attenuation inversion in the New England Mud Patch.","authors":"Gopu R Potty, James H Miller","doi":"10.1121/10.0046128","DOIUrl":"https://doi.org/10.1121/10.0046128","url":null,"abstract":"<p><p>The goal of this study was to implement a geoacoustic inversion scheme using broadband data from New England Mud Patch to estimate sediment attenuation. The bottom sediments at this location consisted of a layer of mud over sand. The inversion was based on matching measured modal amplitude ratios with predictions. The inversion mitigates the effect of shear conversion in the sandy layer and sediments below that by incorporating shear effects in the inversion. The attenuation estimates compare well with predictions from viscous grain shearing theory and previously published values from the New England Mud Patch and other locations.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148802503","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
Detecting ringed seal vocalizations using deep learning. 利用深度学习检测环状海豹的发声。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0046176
Karlee E Zammit, William D Halliday, Amalis Riera, Annika Heimrich, Mariana Barbosa, Nikoletta Diogou, Stephen J Insley, Fabio Frazao, Sebastien Fabbro, Stan E Dosso
{"title":"Detecting ringed seal vocalizations using deep learning.","authors":"Karlee E Zammit, William D Halliday, Amalis Riera, Annika Heimrich, Mariana Barbosa, Nikoletta Diogou, Stephen J Insley, Fabio Frazao, Sebastien Fabbro, Stan E Dosso","doi":"10.1121/10.0046176","DOIUrl":"https://doi.org/10.1121/10.0046176","url":null,"abstract":"<p><p>Ringed seals (Pusa hispida) in the Arctic face habitat loss from climate change, making monitoring critical for conservation. Passive acoustic monitoring provides essential data; however, large data volumes require automated analysis. We developed a ResNet-based detector for ringed seal barks in passive acoustic recordings. The detector achieved F1 scores above 0.90 on development data and held-out datasets from different locations and recording periods. In continuous recordings, it maintained high recall (>0.90), with lower precision (∼0.5) reflecting a trade-off between detecting most vocalizations and false positives from acoustically similar non-target sounds. The open-source detector supports large-scale bioacoustic monitoring.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148842405","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
Direction of arrival estimation with a vector intensity hydrophone array towed by an autonomous surface vehicle. 自主水面航行器拖曳矢量强度水听器阵列的到达方向估计。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044817
Davis Rider, Laurent Grare, Luc Lenain, Karim G Sabra
{"title":"Direction of arrival estimation with a vector intensity hydrophone array towed by an autonomous surface vehicle.","authors":"Davis Rider, Laurent Grare, Luc Lenain, Karim G Sabra","doi":"10.1121/10.0044817","DOIUrl":"https://doi.org/10.1121/10.0044817","url":null,"abstract":"<p><p>Using pressure gradient-based methodology, a compact 33-cm, four-element, tetrahedron-shaped hydrophone array is demonstrated to emulate the low-frequency direction of arrival (DOA) finding performance of a vector sensor. Towed from an autonomous surface vehicle in deep water, near the Kelvin and Atlantis II seamount complexes, this array is capable of determining the horizontal DOA (i.e., bearing) of low-frequency broadband (210-310 Hz) transmissions from bottom-moored sources located at a depth of ∼1100 m and ranges up to 176 km away. Both coherent and incoherent DOA finding methods are presented, producing consistent DOA values for signal-to-noise ratios higher than 11 dB for the selected experimental configuration.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148681437","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
Slow dynamics under high confining pressure in saturated sandstone with pore pressure. 含孔隙压力的饱和砂岩高围压下慢动力学研究
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0046089
Manuel Asnar, Christoph Sens-Schönfelder, Audrey Bonnelye, Marco Bohnhoff
{"title":"Slow dynamics under high confining pressure in saturated sandstone with pore pressure.","authors":"Manuel Asnar, Christoph Sens-Schönfelder, Audrey Bonnelye, Marco Bohnhoff","doi":"10.1121/10.0046089","DOIUrl":"https://doi.org/10.1121/10.0046089","url":null,"abstract":"<p><p>Slow dynamics (SD) is a time-dependent, nonlinear elastic behavior occurring in a variety of consolidated or damaged materials, including rocks. The influence of relative humidity and confining pressure on SD has been studied but not that of full saturation and effective pressure. We show that SD can occur under high confining pressure in fluid-saturated sandstone if the effective pressure is low enough. This suggests that effective pressure determines whether SD can be observed, explaining why field observations of SD are possible not only near the surface but also in environments with high pore pressure such as fault zones or volcanoes.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148835463","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
Including two-dimensional pressure-focusing in transmission-line cochlear models. 包括在传输线耳蜗模型中的二维压力聚焦。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044580
Alessandro Altoè, Christopher A Shera
{"title":"Including two-dimensional pressure-focusing in transmission-line cochlear models.","authors":"Alessandro Altoè, Christopher A Shera","doi":"10.1121/10.0044580","DOIUrl":"10.1121/10.0044580","url":null,"abstract":"<p><p>Transmission-line models are the simplest physics-based cochlear models that include an explicit representation of the traveling wave, which plays an important role for encoding complex sounds in the auditory periphery. Despite their many attractive features, transmission-line models suffer from well-known shortcomings that prevent them from replicating the experimental data or explicating the physical functioning of the cochlea. The main issue is that they neglect important two-dimensional (2D) hydrodynamic effects, widely known as \"pressure focusing,\" which enhance the vibration of the cochlear sensory tissue in a wavelength-dependent fashion. Here, we present an efficient method for including 2D pressure-focusing in transmission-line models.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13459056/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148681427","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
Systematic F1 increase in Korean aegyo speech may signal childlike qualities. 韩国语中有系统的F1增加可能表明了孩子般的品质。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044475
Ji-Eun Kim, Volker Dellwo
{"title":"Systematic F1 increase in Korean aegyo speech may signal childlike qualities.","authors":"Ji-Eun Kim, Volker Dellwo","doi":"10.1121/10.0044475","DOIUrl":"https://doi.org/10.1121/10.0044475","url":null,"abstract":"<p><p>Korean aegyo is a socially recognized childlike speaking style used predominantly in romantic interactions among adults. This study examined vowel space modification in aegyo by analyzing formant frequencies from twelve Seoul Korean speakers who produced identical scripts in aegyo and non-aegyo styles. Results show that aegyo speech features a significant increase in F1 values across vowels and selective fronting of front vowels, leading to some expansion of the vowel space but mainly shifting to higher F1. These findings motivate the hypothesis that adult speakers construct a childlike vocal quality by increasing F1, possibly through a combination of different factors like global vowel lowering and partial fronting.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148802487","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
Bidirectional long short-term memory-based subsurface sound speed profile inversion from satellite data with sparse observations. 基于稀疏观测卫星数据的双向长短期记忆地下声速剖面反演。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044813
Bing Yue, Cheng Chen, Xiao Feng, Chuxiong Wang, Minghui Li, Fushi Bai
{"title":"Bidirectional long short-term memory-based subsurface sound speed profile inversion from satellite data with sparse observations.","authors":"Bing Yue, Cheng Chen, Xiao Feng, Chuxiong Wang, Minghui Li, Fushi Bai","doi":"10.1121/10.0044813","DOIUrl":"https://doi.org/10.1121/10.0044813","url":null,"abstract":"<p><p>Satellite-derived sea surface remote sensing data enable large-scale subsurface sound speed profile (SSP) inversion; however, considerable inversion errors commonly arise due to the lack of in situ constraints. To address this limitation, this Letter proposes a bidirectional long short-term memory-based framework that integrates sparse observations to improve inversion accuracy. Experiments in the Kuroshio Extension and the Philippine Sea demonstrate that sparse observations yield improved inversion accuracy, with remarkable improvement without sea surface data. Depth-layer sensitivity analysis reveals that optimal sparse sampling depth intervals differ under scenarios with and without sea surface data, offering guidance for rational underwater observation deployment.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148714942","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
Incomplete compensation without further adaptation: A large-sample acoustic analysis of bite block speech in masking noise. 没有进一步适应的不完全补偿：掩蔽噪声下咬块语音的大样本声学分析。
IF 1.5
JASA express letters Pub Date : 2026-07-01 DOI: 10.1121/10.0044347
Timothy K Murphy, Hung-Shao Cheng, Caroline A Niziolek, Benjamin Parrell
{"title":"Incomplete compensation without further adaptation: A large-sample acoustic analysis of bite block speech in masking noise.","authors":"Timothy K Murphy, Hung-Shao Cheng, Caroline A Niziolek, Benjamin Parrell","doi":"10.1121/10.0044347","DOIUrl":"10.1121/10.0044347","url":null,"abstract":"<p><p>The speech system maintains intelligibility even when articulatory movements are restricted. Researchers often study this compensatory mechanism using a bite block to constrain jaw movement. While early reports indicated that speakers fully negate bite block effects on vowel acoustics, more recent reports found only partial compensation, suggesting the potential for continual adjustments (adaptation). We investigated a large sample (n = 55) of speakers who performed a bite block task while their auditory feedback was masked. We found incomplete immediate compensation and no adjustments over time, suggesting that adaptation for bite block effects on vowel acoustics requires auditory feedback.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 7","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13422028/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148537824","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
Seasonal changes in sediment sound speed profiles. 沉积物声速剖面的季节变化。
IF 1.5
JASA express letters Pub Date : 2026-07-01 DOI: 10.1121/10.0044366
Charles W Holland, Chad Smith, Tim Sonnemann
{"title":"Seasonal changes in sediment sound speed profiles.","authors":"Charles W Holland, Chad Smith, Tim Sonnemann","doi":"10.1121/10.0044366","DOIUrl":"https://doi.org/10.1121/10.0044366","url":null,"abstract":"<p><p>Marine sediment sound speed profiles in the upper ten meters are generally assumed to be constant with time. Models predict that substantive changes occur because of thermal conduction from seasonally varying bottom water temperature. However, definitive measurements have been lacking. In this work, sediment sound speed profiles obtained during different seasons show significant differences in the upper 9 m of mud at the New England Patch. Gradients in late March 2017 are 6.0 s-1 and in early October 2025, 2.6 s-1. This change is shown to have a significant impact on acoustic propagation.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 7","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148474547","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
Perception of English vowels across regional accents by Catalan-Spanish bilinguals. 加泰罗尼亚-西班牙双语者对不同地区口音英语元音的感知。
IF 1.5
JASA express letters Pub Date : 2026-07-01 DOI: 10.1121/10.0044333
Gil Verbeke, Juli Cebrian, Ellen Simon
{"title":"Perception of English vowels across regional accents by Catalan-Spanish bilinguals.","authors":"Gil Verbeke, Juli Cebrian, Ellen Simon","doi":"10.1121/10.0044333","DOIUrl":"https://doi.org/10.1121/10.0044333","url":null,"abstract":"<p><p>This study investigates how Catalan-Spanish bilinguals perceive and identify vowels produced in Southern British, Northern British and Australian English. Thirty-three participants completed a perceptual assimilation task and a second-language vowel identification task using naturally produced /CVC/-syllables. Results showed that peripheral English vowels were consistently mapped onto a single Catalan category with high goodness-of-fit, while other vowel-accent pairings, particularly those involving mid-vowel categories, displayed more variable cross-language mappings. Listeners' mappings also varied across the three regional accents and did not reliably predict L2 vowel identification accuracy, likely due to high input variability and the relative instability of L2 vowel representations.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 7","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148621977","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
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