An optoacoustic point source for acoustic scale model measurements

被引：21

作者：

Bolanos, Javier Gomez ^{[1
]}

Pulkki, Ville ^{[1
]}

Karppinen, Pasi ^{[2
]}

Haeggstrom, Edward ^{[2
]}

机构：

[1] Aalto Univ, Dept Signal Proc & Acoust, FI-00076 Espoo, Finland

[2] Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2013年 / 133卷 / 04期

基金：

芬兰科学院; 欧洲研究理事会;

关键词：

SHOCK-WAVES; PROPAGATION; AIR;

D O I：

10.1121/1.4793566

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A massless acoustic source is proposed for scale model work. This source is generated by focusing a pulsed laser beam to rapidly heat the air at the focal point. This produces an expanding small plasma ball which generates a sonic impulse that may be used as an acoustic point source. Repeatability, frequency response, and directivity of the source were measured to show that it can serve as a massless point source. The impulse response of a rectangular space was determined using this type of source. A good match was found between the predicted and the measured impulse responses of the space. (C) 2013 Acoustical Society of America

引用

页码：EL221 / EL227

页数：7

共 10 条

[1] IMAGE METHOD FOR EFFICIENTLY SIMULATING SMALL-ROOM ACOUSTICS [J].

ALLEN, JB ;

BERKLEY, DA .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1979, 65 (04) :943-950

[2]

Ayrault C., 2012, AC 2012 NANT

[3] Energy absorption and propagation in laser-created sparks [J].

Bindhu, CV ;

Harilal, SS ;

Tillack, MS ;

Najmabadi, F ;

Gaeris, AC .

APPLIED SPECTROSCOPY, 2004, 58 (06) :719-726

[4] Spatial and temporal profiles of pulsed laser-induced air plasma emissions [J].

Chen, YL ;

Lewis, JWL ;

Parigger, C .

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2000, 67 (02) :91-103

[5] LASER-GENERATED ULTRASOUND - ITS PROPERTIES, MECHANISMS AND MULTIFARIOUS APPLICATIONS [J].

DAVIES, SJ ;

EDWARDS, C ;

TAYLOR, GS ;

PALMER, SB .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1993, 26 (03) :329-348

[6] A scale model experiment for the study of sound propagation in urban areas [J].

Picaut, J ;

Simon, L .

APPLIED ACOUSTICS, 2001, 62 (03) :327-340

[7] Characteristics and application of laser-generated acoustic shock waves in air [J].

Qin, Q ;

Attenborough, K .

APPLIED ACOUSTICS, 2004, 65 (04) :325-340

[8] PROPAGATION IN AIR OF N-WAVES PRODUCED BY SPARKS [J].

WRIGHT, WM .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1983, 73 (06) :1948-1955

[9] BINAURAL SCALE MODELING FOR AURALISATION AND PREDICTION OF ACOUSTICS IN AUDITORIUMS [J].

XIANG, N ;

BLAUERT, J .

APPLIED ACOUSTICS, 1993, 38 (2-4) :267-290

[10] Nonlinear spherically divergent shock waves propagating in a relaxing medium [J].

Yuldashev, P. V. ;

Averiyanov, M. V. ;

Khokhlova, V. A. ;

Ollivier, S. ;

Blanc-Benon, Ph. .

ACOUSTICAL PHYSICS, 2008, 54 (01) :32-41

← 1 →