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A model of the shear and compressional geoacoustic profiles at the New England Mud Patch from a trans-dimensional inversion. 基于跨维反演的新英格兰泥块剪切和压缩地球声剖面模型
IF 1.5
JASA express letters Pub Date : 2026-09-01 DOI: 10.1121/10.0046639
Nicholas P Chotiros, Stan E Dosso, Gopu R Potty, Preston S Wilson, Julien Bonnel, David P Knobles
{"title":"A model of the shear and compressional geoacoustic profiles at the New England Mud Patch from a trans-dimensional inversion.","authors":"Nicholas P Chotiros, Stan E Dosso, Gopu R Potty, Preston S Wilson, Julien Bonnel, David P Knobles","doi":"10.1121/10.0046639","DOIUrl":"https://doi.org/10.1121/10.0046639","url":null,"abstract":"<p><p>An elastic approximation of a porous medium model was fitted to the shear and compressional seabed geoacoustic profile at the New England Mud Patch, obtained through a trans-dimensional Bayesian inversion of matched-field acoustic data, over the 20-2000 Hz band. The adopted model was an elastic approximation of the modified, corrected, Revil, extended Biot model that retains the creep modification and elastic components of Biot's equations. Its attenuation mechanism is a form of creep, and it can accommodate the effects of consolidation, suitable for sediments at all depths considered in the trans-dimensional inversion. Model parameter values and their credibility intervals were obtained.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 9","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148972627","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
Site-specific acoustic, rooftop velocity, and window acceleration measurements during the NASA Artemis II launch. NASA阿尔忒弥斯2号发射过程中特定地点的声学、屋顶速度和窗口加速度测量。
IF 1.5
JASA express letters Pub Date : 2026-09-01 DOI: 10.1121/10.0046431
Whitney L Coyle, Hunter N Williams, Nicholas T Memmelaar, Laura L Mason, Zaira L Mitchell
{"title":"Site-specific acoustic, rooftop velocity, and window acceleration measurements during the NASA Artemis II launch.","authors":"Whitney L Coyle, Hunter N Williams, Nicholas T Memmelaar, Laura L Mason, Zaira L Mitchell","doi":"10.1121/10.0046431","DOIUrl":"https://doi.org/10.1121/10.0046431","url":null,"abstract":"<p><p>Acoustic, rooftop velocity, and window acceleration measurements were obtained during the NASA Artemis II launch at community sites 26-27 km from LC-39B. The instruments were not co-located; observations are site-specific. The acoustic record peaked at 104 dB re 20 μPa (1-s overall sound pressure level); roof-mounted velocity peaked at 2.08 mm/s; and at a residential site, a glass-mounted accelerometer recorded a distinct out-of-plane response near 7.3 Hz, with peak acceleration of 0.36 g. All three showed peak energy in the 2-20 Hz band, identifying a building-component response not captured by conventional community-noise metrics.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"6 9","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148882614","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
True-angle sparse Bayesian learning for horizontal line arrays in a multipath shadow-zone environment. 多径阴影区环境下水平线阵列的真角度稀疏贝叶斯学习。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0046189
Zhengchao Huang, Zhenglin Li, Peng Xiao
{"title":"True-angle sparse Bayesian learning for horizontal line arrays in a multipath shadow-zone environment.","authors":"Zhengchao Huang, Zhenglin Li, Peng Xiao","doi":"10.1121/10.0046189","DOIUrl":"https://doi.org/10.1121/10.0046189","url":null,"abstract":"<p><p>Horizontal line arrays may exhibit large bearing-estimation errors in deep-ocean shadow zones, particularly near the endfire direction, because the received field is dominated by vertical-plane multipath rather than a direct arrival. To address this problem, this paper analyzes the geometric relationship among the ray arrival angle, the apparent bearing measured by a horizontal line array, and the true target bearing. Based on this relationship, a true-angle sparse Bayesian learning (TA-SBL) method is proposed. In TA-SBL, several apparent-angle branches associated with the same candidate true bearing are represented by one sparse block and controlled by a shared hyperparameter so that the bearing estimate is obtained directly in the true-angle domain. Simulations show reduced multipath-induced bearing bias in the examined cases.</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":"148820507","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
Spatiotemporal tongue kinematics from ultrasound imaging: Articulatory divergence in Mandarin apical vowels. 从超声影像看舌的时空运动学：普通话尖元音的发音差异。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044524
Feng-Fan Hsieh
{"title":"Spatiotemporal tongue kinematics from ultrasound imaging: Articulatory divergence in Mandarin apical vowels.","authors":"Feng-Fan Hsieh","doi":"10.1121/10.0044524","DOIUrl":"https://doi.org/10.1121/10.0044524","url":null,"abstract":"<p><p>Mandarin apical vowels [ɹ'] and [ɻ'] have resisted articulatory classification: are they vocalized prolongations of the preceding sibilant or independent vowel targets? Using ultrasound imaging and generalized additive mixed models with simultaneous confidence intervals, the tongue contour over space and time in two comparisons has been modeled: each vowel against its sibilant onset and the three vocalic realizations against one another. [ɻ'] continues the /ʂ/ posture while [ɹ'] diverges from /s/, and the three realizations differ from one another, the two apical vowels from [i] and from each other. The Mandarin \"apical vowel\" label may subsume more than one articulatory strategy.</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":"148671463","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
Estimating the minimum numbers of calling mysticetes using passive acoustic bearings. 利用被动声学定位估计召唤神秘菌的最小数量。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044581
S Bruce Martin, Julien J-Y Delarue, Ildar R Urazghildiiev, Briand J Gaudet, Eloise T Callaghan, Kerkeslin MacDonald, Joanna E Mills Flemming, Jennifer L Miksis-Olds
{"title":"Estimating the minimum numbers of calling mysticetes using passive acoustic bearings.","authors":"S Bruce Martin, Julien J-Y Delarue, Ildar R Urazghildiiev, Briand J Gaudet, Eloise T Callaghan, Kerkeslin MacDonald, Joanna E Mills Flemming, Jennifer L Miksis-Olds","doi":"10.1121/10.0044581","DOIUrl":"https://doi.org/10.1121/10.0044581","url":null,"abstract":"<p><p>Monitoring the abundance and distribution of marine mammals is essential for evaluating human and environmental effects. Passive acoustic monitoring offers a non-visual alternative, but estimating animal numbers remains difficult. We introduce Spatial Counting of Animal Numbers (SCAN), a method that counts unique bearings of detected calls to estimate a conservative minimum number of animals present. SCAN is a complementary metric to traditional presence/absence results and calibrated density estimates. The method is demonstrated using sei whale calls recorded by a four-element array on an autonomous glider. SCAN increases the information on marine mammal populations derived from passive acoustic recordings.</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":"148708591","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
Beijing Mandarin nasalization upon r-suffixation is phonologized: A nasometry study. 北京普通话r-后缀鼻音化的音韵学研究。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044577
Christine Gu, Kaustubh Ghoshal, Zhilang Liu, Felix Fonseca Quesada, Gideon Kortenhoven, Vitor Lacerda Siqueira, Lisa Davidson
{"title":"Beijing Mandarin nasalization upon r-suffixation is phonologized: A nasometry study.","authors":"Christine Gu, Kaustubh Ghoshal, Zhilang Liu, Felix Fonseca Quesada, Gideon Kortenhoven, Vitor Lacerda Siqueira, Lisa Davidson","doi":"10.1121/10.0044577","DOIUrl":"https://doi.org/10.1121/10.0044577","url":null,"abstract":"<p><p>In Beijing Mandarin, r-suffixation is a diminutive formation process that adds a rhotic suffix, which typically overwrites syllable-final nasal codas. Previous work by Zhang [Phonology 17, 427-478 (2000)] used nasal airflow data to argue that the categorical preservation of nasality in suffixed /CVŋ + ɻ/ as opposed to /CVn + ɻ/ is driven by salient differences in nasalization in the stem. A nasometry study revealed no significant nasalance difference between CVn and CVŋ stems, contradicting previous aerodynamic evidence. Nevertheless, a significant nasalization contrast remained in r-suffixed forms. These findings suggest that the alternation is reanalyzed as phonological instead of a reflection of phonetic differences in vowel nasalance in the stem.</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":"148714881","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
Visual identification of Taiwan Mandarin rounded vowels. 台湾普通话圆元音的视觉识别。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044506
Chenhao Chiu
{"title":"Visual identification of Taiwan Mandarin rounded vowels.","authors":"Chenhao Chiu","doi":"10.1121/10.0044506","DOIUrl":"https://doi.org/10.1121/10.0044506","url":null,"abstract":"<p><p>While auditory and visual cues jointly support vowel perception, the role of visual information alone in vowel identification remains understudied. This study examines how Taiwan Mandarin speakers identify rounded vowels using visual-only input. Results reveal an asymmetric pattern between /y/ and /u/, with a bias toward /u/ as the default rounded vowel and greater difficulty identifying /y/. Signal detection analyses further indicate a higher response criterion for /y/. This default preference for /u/ appears to reflect phonological distributions in the language or a universal preference for the more peripheral vowel. Varying degrees of visual input did not modulate identification strategies, and visual information provided only limited support for distinguishing between /u/ and /y/.</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":"148665325","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
Estimating ship source levels using distributed acoustic sensing data and validation with hydrophone measurements. 利用分布式声传感数据和水听器测量验证估计船舶源电平。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0043900
Shima Abadi
{"title":"Estimating ship source levels using distributed acoustic sensing data and validation with hydrophone measurements.","authors":"Shima Abadi","doi":"10.1121/10.0043900","DOIUrl":"https://doi.org/10.1121/10.0043900","url":null,"abstract":"<p><p>This study quantifies the relationship between distributed acoustic sensing (DAS) and traditional hydrophone measurements of ship noise. Analyzing a cargo ship's transit recorded by a DAS array and a nearby hydrophone, a conversion factor of 177.7 ± 3.5 dB (30-50 Hz) was derived, relating DAS strain to hydrophone pressure. A comparison of this conversion factor with a few existing studies highlights the variability in reported values and methodologies, underscoring the need for more extensive analysis and dedicated research to fully characterize DAS calibration.</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":"148686965","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
Estimation of decorrelation rates of scattering from a heterogeneous seafloor. 非均匀海底散射去相关率的估计。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044873
Thomas E Blanford, Jenna Hare, Anthony P Lyons, Hailey L Gilman, Gabriel R Venegas
{"title":"Estimation of decorrelation rates of scattering from a heterogeneous seafloor.","authors":"Thomas E Blanford, Jenna Hare, Anthony P Lyons, Hailey L Gilman, Gabriel R Venegas","doi":"10.1121/10.0044873","DOIUrl":"10.1121/10.0044873","url":null,"abstract":"<p><p>In pulse-echo sonar, the temporal coherence of echoes from the seafloor can provide an acoustic means to observe subtle long- or short-term changes in the seabed. Measurements of scattering from a seabed composed of sand, clay, and gravel in the Gulf of Maine were made over a period of 8 months. A parametric estimation approach, using a piecewise exponential function, is described and applied to the data to more accurately estimate nonstationary decorrelation rates. This approach may aid in quantifying and describing the rate of change in seafloors with mixed composition and in complex ocean environments with multiple forcing mechanisms.</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":"148721936","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
Binaural fusion and mis-identification of spatially separated concurrent vowels by cochlear implant users. 人工耳蜗使用者双耳融合及空间分离并发元音的错误识别。
IF 1.5
JASA express letters Pub Date : 2026-08-01 DOI: 10.1121/10.0044921
Kayla Pierre, Nicole Dean, Holden Sanders, Michelle R Molis, Lina A J Reiss
{"title":"Binaural fusion and mis-identification of spatially separated concurrent vowels by cochlear implant users.","authors":"Kayla Pierre, Nicole Dean, Holden Sanders, Michelle R Molis, Lina A J Reiss","doi":"10.1121/10.0044921","DOIUrl":"10.1121/10.0044921","url":null,"abstract":"<p><p>Excess binaural fusion can be problematic for listeners in noisy environments, leading to fusion of speech from multiple talkers. Previous research found that hearing aid users experience broad binaural fusion, fusing concurrent dichotic vowels with voice pitch differences of up to an octave [Reiss and Molis (2021) J. Assoc. Res. Otolaryngol. 22(4), 443-461]. This study examined whether cochlear implant (CI) users, compared to normal-hearing listeners, also exhibit abnormal fusion of concurrent double vowels in free-field conditions. The results revealed that CI users often fuse and mis-identify vowels even with large pitch differences, suggesting that they face additional challenges in noisy environments due to excessive binaural fusion.</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/PMC13479304/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148760483","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
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