Numerical simulation of aerodynamic sound source in the wake of a complex object

2000 ◽  
Author(s):  
Chisaschi Kato ◽  
Akiyoshi Iida ◽  
Morishige Hattori ◽  
Satoru Inadama
Keyword(s):  
Numerical Simulation ◽  
Sound Source ◽  
Complex Object ◽  
Aerodynamic Sound

Visualization of aerodynamic sound source by using Multiresolution Analysis

2002 ◽  
Vol 2002.8 (0) ◽  
pp. 405-406
Author(s):  
Akiyoshi Iida ◽  
Akisato Mizuno ◽  
Tasuku Ohyama
Keyword(s):  
Sound Source ◽  
Multiresolution Analysis ◽  
Aerodynamic Sound

857 Aerodynamic sound source around a square cylinder in a uniform flow

2011 ◽  
Vol 2011.60 (0) ◽  
pp. _857-1_-_857-2_
Author(s):  
Kenji Hagiya ◽  
Youmin Lee ◽  
Hirosi Yokoyama ◽  
Akiyoshi Iida ◽  
Chisachi Kato
Keyword(s):  
Sound Source ◽  
Uniform Flow ◽  
Square Cylinder ◽  
Aerodynamic Sound

scholarly journals Assessment of Sound Source Tracking Using Multiple Drones Equipped with Multiple Microphone Arrays

2021 ◽  
Vol 18 (17) ◽  
pp. 9039
Author(s):  
Taiki Yamada ◽  
Katsutoshi Itoyama ◽  
Kenji Nishida ◽  
Kazuhiro Nakadai
Keyword(s):  
Numerical Simulation ◽  
Performance Assessment ◽  
Sound Source ◽  
Microphone Arrays ◽  
Source Tracking ◽  
Signal To Noise ◽  
Sound Sources ◽  
Tracking Method ◽  
Low Snr ◽  
Source Distance

Drone audition techniques are helpful for listening to target sound sources from the sky, which can be used for human searching tasks in disaster sites. Among many techniques required for drone audition, sound source tracking is an essential technique, and thus several tracking methods have been proposed. Authors have also proposed a sound source tracking method that utilizes multiple microphone arrays to obtain the likelihood distribution of the sound source locations. These methods have been demonstrated in benchmark experiments. However, the performance against various sound sources with different distances and signal-to-noise ratios (SNRs) has been less evaluated. Since drone audition often needs to listen to distant sound sources and the input acoustic signal generally has a low SNR due to drone noise, making a performance assessment against source distance and SNR is essential. Therefore, this paper presents a concrete evaluation of sound source tracking methods using numerical simulation, focusing on various source distances and SNRs. The simulated results captured how the tracking performance will change when the sound source distance and SNR change. The proposed approach based on location distribution estimation tended to be more robust against distance increase, while existing approaches based on directional estimation tended to be more robust against decreasing SNR.

scholarly journals Visualization of aerodynamic sound source around a circular cylinder in uniform flow

2008 ◽  
Vol 28-1 (2) ◽  
pp. 1007-1007
Author(s):  
Shoji Kato ◽  
Akiyoshi IlDA ◽  
Chisachi Kato ◽  
Akisato MiZUNO
Keyword(s):  
Circular Cylinder ◽  
Sound Source ◽  
Uniform Flow ◽  
Aerodynamic Sound
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