Proceedings of meetings on acoustics. Acoustical Society of America最新文献

The influence of sensor size on experimental measurement accuracy of vocal fold contact pressure. 传感器尺寸对声带接触压力实验测量精度的影响

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-12-04 Epub Date: 2024-06-04 DOI: 10.1121/2.0001894

Zhaoyan Zhang

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引用次数: 0

Interferometric measurements of laser-induced shockwaves in air 空气中激光诱导冲击波的干涉测量

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-03-01 DOI: 10.1121/2.0001647

Carl R. Hart, G. Lyons

{"title":"Interferometric measurements of laser-induced shockwaves in air","authors":"Carl R. Hart, G. Lyons","doi":"10.1121/2.0001647","DOIUrl":"https://doi.org/10.1121/2.0001647","url":null,"abstract":"When focused to a small spot size in air, a sufficiently energetic laser pulse initiates a rapidly expanding plasma. After a delay, a shockwave detaches from the plasma boundary and propagates. General features of the shockwaves can be deduced from condenser microphone measurements. However, the minimum range is limited by damage thresholds, and the presence of the microphone introduces a number of measurement artifacts. Distortion of the signal is caused by diffraction around the sensor, and the limited bandwidth does not allow rise times to be correctly quantified. In contrast, optical interferometry is a nonintrusive diagnostic for quantifying shockwave characteristics. In this study, a Nd:YAG laser is focused through a converging lens in order to generate laser-induced shockwaves. By using a variable attenuator, four laser energy outputs are examined: 25, 50, 75, and 100% of the maximum energy transmission. Heterodyne Mach–Zehnder interferometer measurements are made from 10 mm to 200 mm from the focal point of the lens. Virtual velocity signals, proportional to the time derivative of optical phase differences, are used to estimate density and pressure time histories, along with peak pressure as a function of distance.","PeriodicalId":88302,"journal":{"name":"Proceedings of meetings on acoustics. Acoustical Society of America","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48215692","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

Acoustical worship ambience of Spanish Franciscans built churches: Nossa Senhora do Pilar (Goa) and Mission Concepcion (Texas) 西班牙方济各会建造教堂的声音崇拜氛围:Nossa Senhora do Pilar(果阿)和Mission Concepcion(德克萨斯州)

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001744

M. A. Tavares, S. Wiseman

引用次数: 0

An overview of acoustical measurements made of the Atlas V JPSS-2 rocket launch 阿特拉斯5号JPSS-2火箭发射的声学测量概述

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001768

Logan T. Mathews, Mark C. Anderson, Carson D. Gardner, Bradley W. McLaughlin, Brooke M. Hinds, Megan R. McCullah-Boozer, Lucas K. Hall, Kent L. Gee

引用次数: 0

When clear speech does not enhance memory: Effects of speaking style, voice naturalness, and listener age 清晰的语言不能增强记忆:说话风格、声音自然度和听者年龄的影响

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001766

Nicholas B. Aoki, Georgia Zellou

引用次数: 1

Summary of “Microphones: Design, Development, and Characterization” “麦克风:设计、开发和特性”综述

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001798

Thomas E. Blanford, Zane Rusk

引用次数: 0

Summary of “Additive Manufacturing of Acoustic Transducers” “声换能器的增材制造”综述

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001797

Thomas E. Blanford, Michael R. Haberman

引用次数: 0

Spatial differences in soundscape for bats on the edge versus the center of a bat swarm 蝙蝠群边缘与中心的声景空间差异

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001789

Keegan Eveland, Robert Stevenson, Paul Domski, Dieter Vanderelst, Laura Kloepper

引用次数: 0

Serial and parallel implementations of the fast nearfield methods for continuous-wave and transient pressure calculations 连续波和瞬态压力计算的快速近场方法的串行和并行实现

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001756

Jacob S. Honer, Robert J. McGough

引用次数: 0

The impact of material memory on acoustic absorption in viscoelastic layers 粘弹性层中材料记忆对声吸收的影响

Proceedings of meetings on acoustics. Acoustical Society of America Pub Date : 2023-01-01 DOI: 10.1121/2.0001746

Eric Abercrombie, J. Gregory McDaniel

引用次数: 0