Beam generating and sound field modeling of flexible phased arrays for inspecting complex geometric components

Wave Motion ◽  
2020 ◽  
Vol 94 ◽  
pp. 102494
Author(s):  
Yanfang Zheng ◽  
Xinyu Zhao ◽  
Sung-Jin Song ◽  
Jianhai Zhang
Keyword(s):  
Phased Arrays ◽  
Sound Field ◽  
Field Modeling

Target response in a focused, modulated sound field: Modeling and experiment

2018 ◽  
Vol 143 (3) ◽  
pp. 1739-1739
Author(s):  
Timothy D. Daniel ◽  
Philip L. Marston ◽  
Ahmad T. Abawi ◽  
Ivars P. Kirsteins
Keyword(s):  
Sound Field ◽  
Target Response ◽  
Field Modeling

Sound field modeling in streets with a diffusion equation

1999 ◽  
Vol 106 (5) ◽  
pp. 2638-2645 ◽  
Author(s):  
J. Picaut ◽  
L. Simon ◽  
J. Hardy
Keyword(s):  
Diffusion Equation ◽  
Sound Field ◽  
Field Modeling

Sound field modeling and simulation of a concert hall

1988 ◽  
Vol 83 (S1) ◽  
pp. S50-S50
Author(s):  
T. Hidaka ◽  
K. Kageyama ◽  
S. Masuda
Keyword(s):  
Modeling And Simulation ◽  
Sound Field ◽  
Concert Hall ◽  
Field Modeling

Sound field modeling in a street canyon with partially diffusely reflecting boundaries by the transport theory

2004 ◽  
Vol 116 (5) ◽  
pp. 2969-2983 ◽  
Author(s):  
Thierry Le Pollès ◽  
Judicaël Picaut ◽  
Michel Bérengier ◽  
Claude Bardos
Keyword(s):  
Street Canyon ◽  
Transport Theory ◽  
Sound Field ◽  
Field Modeling ◽  
Reflecting Boundaries

An Introduction to Virtual Phased Arrays for Beamforming Applications

2015 ◽  
Vol 39 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Daniel Fernández Comesana ◽  
Keith R. Holland ◽  
Dolores García Escribano ◽  
Hans-Elias de Bree
Keyword(s):  
Sound Localization ◽  
Relative Phase ◽  
Phased Arrays ◽  
Sound Field ◽  
Microphone Arrays ◽  
Acoustic Sensor ◽  
Frequency Range ◽  
Acoustic Holography ◽  
Sound Sources ◽  
Single Sensor

Abstract Sound localization problems are usually tackled by the acquisition of data from phased microphone arrays and the application of acoustic holography or beamforming algorithms. However, the number of sensors required to achieve reliable results is often prohibitive, particularly if the frequency range of interest is wide. It is shown that the number of sensors required can be reduced dramatically providing the sound field is time stationary. The use of scanning techniques such as “Scan & Paint” allows for the gathering of data across a sound field in a fast and efficient way, using a single sensor and webcam only. It is also possible to characterize the relative phase field by including an additional static microphone during the acquisition process. This paper presents the theoretical and experimental basis of the proposed method to localise sound sources using only one fixed microphone and one moving acoustic sensor. The accuracy and resolution of the method have been proven to be comparable to large microphone arrays, thus constituting the so called “virtual phased arrays”.

Sound field modeling in a street canyon with a diffusion equation

2006 ◽  
Vol 120 (5) ◽  
pp. 3334-3334
Author(s):  
Judicaël Picaut ◽  
Stéphane Colle ◽  
Michel Bérengier
Keyword(s):  
Diffusion Equation ◽  
Street Canyon ◽  
Sound Field ◽  
Field Modeling

scholarly journals Reverberated sound field modeling in coupled rooms using a diffusion equation

2004 ◽  
Vol 116 (4) ◽  
pp. 2553-2553
Author(s):  
Alexis Billon ◽  
Vincent Valeau ◽  
Anas Sakout ◽  
Judical Picaut
Keyword(s):  
Diffusion Equation ◽  
Sound Field ◽  
Field Modeling ◽  
Coupled Rooms

Sound-field modeling in architectural acoustics by a transport theory: Application to street canyons

2005 ◽  
Vol 72 (4) ◽  
Author(s):  
Thierry Le Pollès ◽  
Judicaël Picaut ◽  
Stéphane Colle ◽  
Michel Bérengier ◽  
Claude Bardos
Keyword(s):  
Transport Theory ◽  
Sound Field ◽  
Street Canyons ◽  
Architectural Acoustics ◽  
Field Modeling ◽  
Theory Application

Sound field modeling in streets by a diffusion equation

1999 ◽  
Vol 105 (2) ◽  
pp. 1283-1283
Author(s):  
Judicaël Picaut ◽  
Laurent Simon
Keyword(s):  
Diffusion Equation ◽  
Sound Field ◽  
Field Modeling
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