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Frequency band analysis and comparison of localisation techniques for drones using microphone array measurements. 使用麦克风阵列测量的无人机频段分析和定位技术比较。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035915
Anique Altena, Mirjam Snellen, Salil Luesutthiviboon, Guido de Croon, Mark Voskuijl
{"title":"Frequency band analysis and comparison of localisation techniques for drones using microphone array measurements.","authors":"Anique Altena, Mirjam Snellen, Salil Luesutthiviboon, Guido de Croon, Mark Voskuijl","doi":"10.1121/10.0035915","DOIUrl":"https://doi.org/10.1121/10.0035915","url":null,"abstract":"<p><p>This study covers three aspects of acoustic localisation of drones using a microphone array. First, it assesses a grid-free approach, using differential evolution, to estimate the three-dimensional position of a drone. It is found that this is indeed possible for the drone in the near-field. For larger distances, it still provides the angular position of the drone. Second, the study emphasizes the essence of localisation over small frequency bands with the bands jointly spanning a large frequency range to reveal the presence of multiple sound sources and maximise the drone localisation range. Third, it addresses the localisation ranges for six different drones.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143416424","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
Focus realization in Albanian: The role of prosody and utterance position. 阿尔巴尼亚语的焦点实现：韵律和话语位置的作用。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035419
Enkeleida Kapia, Felicitas Kleber, Jonathan Harrington, Michele Gubian
{"title":"Focus realization in Albanian: The role of prosody and utterance position.","authors":"Enkeleida Kapia, Felicitas Kleber, Jonathan Harrington, Michele Gubian","doi":"10.1121/10.0035419","DOIUrl":"10.1121/10.0035419","url":null,"abstract":"<p><p>This study investigates the realization of narrow and broad focus in Albanian, an understudied language. Production and perception data were analyzed for narrow and broad focus. Speakers were found to produce broad focus with a low f0-trough (L*) and narrow focus with a high f0-peak (L + H*) in both final and initial positions. Listeners preferred L + H* stimuli for narrow focus in initial position regardless of whether they heard a narrow or a broad focus question. These findings show that focus marking in Albanian is influenced more by position than prosodic cues.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143082559","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
Why does the Falcon-9 booster make a triple sonic boom during flyback? An initial analysis. 为什么猎鹰9号助推器在飞回时产生三重音爆？初步分析。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035649
Mark C Anderson, Kent L Gee
{"title":"Why does the Falcon-9 booster make a triple sonic boom during flyback? An initial analysis.","authors":"Mark C Anderson, Kent L Gee","doi":"10.1121/10.0035649","DOIUrl":"https://doi.org/10.1121/10.0035649","url":null,"abstract":"<p><p>When the SpaceX Falcon-9 rocket booster descends through the atmosphere after a launch, it produces a sonic boom with three shocks in the far field, rather than the usual two-shock N-wave. In this Letter, the additional shock's origin is explained using sonic boom theory, nonlinear propagation modeling, computational fluid dynamics, and photographic evidence. The extra central shock results from a forward-migrating compression wave caused by the grid fins merging with a rearward-migrating rarefaction wave caused by the lower portions of the booster, including the folded landing legs.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143412037","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
Computational Bayesian inference for active sonar localization under uncertainty in sound speed profile. 声速剖面不确定条件下主动声纳定位的计算贝叶斯推理。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035808
Abner C Barros, Paul J Gendron
{"title":"Computational Bayesian inference for active sonar localization under uncertainty in sound speed profile.","authors":"Abner C Barros, Paul J Gendron","doi":"10.1121/10.0035808","DOIUrl":"https://doi.org/10.1121/10.0035808","url":null,"abstract":"<p><p>A computational Bayesian approach is presented to address active sonar localization under the challenges of small receive aperture, uncertain sound speed profile (SSP), and limited coherence time. The approach draws inference on wavevectors associated with the closely spaced angle/Doppler spread arrivals, characterizing the scattered acoustic field. The wavevector posterior density is mapped to the scattering body's location and speed under an uncertain SSP using eigenray interpolation and marginalization. SSP uncertainty is captured by a multivariate Gaussian and a low-dimensional subspace mode representation. A case study using SSPs from the Mediterranean Sea demonstrates the efficacy of this approach.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143383986","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
Starship Super Heavy acoustics: Comparing launch noise from Flights 5 and 6. 星际飞船超重型声学：比较5号和6号航班的发射噪音。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035925
Kent L Gee, Noah L Pulsipher, Makayle S Kellison, Grant W Hart, Logan T Mathews, Mark C Anderson
{"title":"Starship Super Heavy acoustics: Comparing launch noise from Flights 5 and 6.","authors":"Kent L Gee, Noah L Pulsipher, Makayle S Kellison, Grant W Hart, Logan T Mathews, Mark C Anderson","doi":"10.1121/10.0035925","DOIUrl":"https://doi.org/10.1121/10.0035925","url":null,"abstract":"<p><p>This Letter analyzes launch noise from Starship Super Heavy's Flights 5 and 6. While Flight-5 data covered 9.7-35.5 km, the stations during Flight 6 spanned 1.0-35.5 km. A comparison of A-weighted and unweighted maximum and exposure levels is made between flights and with an updated environmental assessment (EA). Key findings include: (a) the two flights' noise levels diverge beyond 10 km, (b) EA models overestimate A-weighted metrics, and (c) the acoustic energy from a Starship launch is equivalent to 2.2 Space Launch System launches or ∼11 Falcon 9 launches. These measurements help predict Starship's noise levels around Kennedy Space Center.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143494871","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
Three-dimensional broadband modeling of megameter sound propagation from an underwater explosion. 水下爆炸中兆欧表声传播的三维宽带建模。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035935
Ying-Tsong Lin, Tiago C A Oliveira
{"title":"Three-dimensional broadband modeling of megameter sound propagation from an underwater explosion.","authors":"Ying-Tsong Lin, Tiago C A Oliveira","doi":"10.1121/10.0035935","DOIUrl":"https://doi.org/10.1121/10.0035935","url":null,"abstract":"<p><p>A three-dimensional broadband parabolic equation model is utilized to study the 8000-km-long propagation of an underwater explosion sound from the edge of the New Jersey Shelf to Ascension Island in the South Atlantic Ocean. Both the hydrophone data and the model result show evidence of out-of-plane horizontal reflection and diffraction from a seamount along the propagation path. Two distinct acoustic arrival groups are identified with back-azimuth variations pointing toward the explosion location and the seamount. The three-dimensional sound propagation model reproduces complex signal characteristics observed in the hydrophone data with accurate arrival times and azimuths.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143460990","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
Fast reverberation-reduction algorithm based on inexact matrix decomposition. 基于不精确矩阵分解的快速混响抑制算法。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035946
Yunchao Zhu, Rui Duan, Kunde Yang, Qindong Sun
{"title":"Fast reverberation-reduction algorithm based on inexact matrix decomposition.","authors":"Yunchao Zhu, Rui Duan, Kunde Yang, Qindong Sun","doi":"10.1121/10.0035946","DOIUrl":"https://doi.org/10.1121/10.0035946","url":null,"abstract":"<p><p>Traditionally, matrix-based methods for reverberation reduction have prioritized a high signal-to-reverberation ratio over low time consumption. This letter describes a fast reverberation-reduction algorithm. The reverberation-reduction problem is formulated as an inexact matrix decomposition. A low-rank matrix is obtained through the reverberation extraction in a low-dimensional matrix, and a two-stage structure optimizes the computation iterative frame. The proposed algorithm's convergence, time consumption, and error are numerically simulated. Field data processing results demonstrate that the algorithm achieves a similar receiver operating characteristic (ROC) curve as with the alternating direction multiplier method (ADMM) but reduces the time consumption by 33%.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143494867","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
Liquid channel tunable lens for phased-based ultrasonic beamforminga). 液体通道可调透镜，用于基于相位的超声波波束形成。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035926
Sina Rostami, Joel Mobley
{"title":"Liquid channel tunable lens for phased-based ultrasonic beamforminga).","authors":"Sina Rostami, Joel Mobley","doi":"10.1121/10.0035926","DOIUrl":"https://doi.org/10.1121/10.0035926","url":null,"abstract":"<p><p>This work reports on the design and characterization of a tunable lens with a planar aperture that employs liquid channels to perform phase-based beamforming. The desired phase patterns are produced using specific speed-of-sound profiles and can be flexibly configured for a range of frequencies and beam types without changes to its shape or structure. Measurements of the fields show that the lens performs comparably to stepped designs, such as the fraxicon, for a range of focal configurations. The planar geometry and reconfigurable phasing provide for a range of possible applications from nearfield trapping to imaging and therapeutics.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143416443","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
Validating the Iowa Test of Consonant Perception in a large cohort of cochlear implant users. 在大量人工耳蜗使用者中验证爱荷华辅音知觉测验。
IF 1.2
JASA express letters Pub Date : 2025-02-01 DOI: 10.1121/10.0035804
Francis X Smith, Joel I Berger, Phillip E Gander, Adam T Schwalje, Timothy D Griffiths, Bob McMurray, Inyong Choi
{"title":"Validating the Iowa Test of Consonant Perception in a large cohort of cochlear implant users.","authors":"Francis X Smith, Joel I Berger, Phillip E Gander, Adam T Schwalje, Timothy D Griffiths, Bob McMurray, Inyong Choi","doi":"10.1121/10.0035804","DOIUrl":"10.1121/10.0035804","url":null,"abstract":"<p><p>The Iowa Test of Consonant Perception (ITCP) was designed to test word-initial phoneme perception by uniformly sampling frequently used phonemes as well as balancing feature overlap of response competitors. However, the task has only been validated in normal hearing listeners. In this study, a large cohort of cochlear implant users completed the ITCP and two commonly used clinical measures of speech recognition [AzBio sentences and consonant-nucleus-consonant (CNC) words]. At two different signal-to-noise ratios, the ITCP showed strong convergent validity with other speech recognition tasks and good test-retest reliability. The ITCP is a useful tool for both clinicians and experimental researchers.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 2","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833676/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143384006","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
A modified adaptive Kalman filter algorithm for the distributed underwater multi-target passive tracking system. 分布式水下多目标无源跟踪系统的改进自适应卡尔曼滤波算法。
IF 1.2
JASA express letters Pub Date : 2025-01-01 DOI: 10.1121/10.0034764
Xuefei Ma, Jiaxin Ma, Zexu Ma, Rahim Khan, Hengliang Wu, Tingting Wang, Zhongwei Shen
{"title":"A modified adaptive Kalman filter algorithm for the distributed underwater multi-target passive tracking system.","authors":"Xuefei Ma, Jiaxin Ma, Zexu Ma, Rahim Khan, Hengliang Wu, Tingting Wang, Zhongwei Shen","doi":"10.1121/10.0034764","DOIUrl":"https://doi.org/10.1121/10.0034764","url":null,"abstract":"<p><p>A modified adaptive Kalman filter (AKF) algorithm is proposed to make underwater multi-target tracking with uncertain measurement noise reliable. By utilizing the proposed AKF algorithm with three core points, including an adaptive fading factor, measurement noise covariance adjustment, and an adaptive weighting factor, the unknown measurement noise and state vector can be estimated with good accuracy and robustness. The practical trial data verify this algorithm, and it has proven superior to all traditional algorithms in this Letter based on the results that it reduces the estimated position RMSEs by at least 10.29% while estimated velocity RMSEs by at least 52.57%.</p>","PeriodicalId":73538,"journal":{"name":"JASA express letters","volume":"5 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142916627","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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