scholarly journals Sound Field Analysis Based on Analytical Beamforming

2006 ◽  
Vol 2007 (1) ◽  
Author(s):  
M. Guillaume ◽  
Y. Grenier
Keyword(s):  
Sound Field ◽  
Field Analysis

Sound field analysis and simulation for fluid machines

2009 ◽  
Vol 40 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Shao-Yi Hsia ◽  
Shih-Ming Chiu ◽  
Jyin-Wen Cheng
Keyword(s):  
Sound Field ◽  
Field Analysis

Finite element sound field analysis on measurement of absorption coefficient in a reverberation room -Relationships between inclination of walls and measurement results-

2021 ◽  
Vol 263 (1) ◽  
pp. 5571-5577
Author(s):  
Reiji Tomiku ◽  
Noriko Okamoto ◽  
Toru Otsuru ◽  
Shun Iwamoto ◽  
Shoma Suzuki
Keyword(s):  
Finite Element ◽  
Absorption Coefficient ◽  
Sound Field ◽  
Field Analysis ◽  
Reverberation Time ◽  
Absorption Coefficients ◽  
Sound Fields ◽  
Measurement Results ◽  
Coefficient Measurement ◽  
Absorption Performance

The absorption coefficients in a reverberation room are most representative measure for evaluating absorption performance of architectural materials. However, it is well known that measurement results of the coefficient vary according to a room shape of the measurement and area of the specimen. Numerical analyses based on wave acoustics are effective tools to investigate these factors on absorption coefficient measurement in reverberation room. In this study, sound fields for the measurement of absorption coefficient in reverberation room are analyzed by time domain finite element method (TDFEM). This study shows effectiveness of the analysis for investigation on causes of variation in the measurement results and improvement methods of the measurement. First, some measurement sound fields for absorption coefficient in reverberation rooms the walls of which are incline or decline are analyzed by the TDFEM. Next, reverberation times in each sound fields are calculated from the results obtained by TDFEM and the absorption coefficients are evaluated from the reverberation time of the room with and without specimen. Finally, the relationships among room shape, degree of inclination of the wall, the sound absorption coefficient of the specimen, frequencies and the measurement absorption coefficient are investigated.

Application of audience-seats characteristics to the sound field analysis for large enclosures

2007 ◽  
Vol 68 (9) ◽  
pp. 939-952 ◽  
Author(s):  
Toru Osa ◽  
Ken Murakami ◽  
Yoshinari Horinouchi ◽  
Daiji Takahashi
Keyword(s):  
Sound Field ◽  
Field Analysis

343 Sound Field Analysis for the Design and Development of Environmentally-Conscious Noise Barrier

2007 ◽  
Vol 2007 (0) ◽  
pp. _343-1_-_343-6_
Author(s):  
Noritoshi NAKAGAWA ◽  
Akihiko HIGASHI ◽  
Toshihiro OKAMOTO ◽  
Kazufumi IWAI
Keyword(s):  
Sound Field ◽  
Field Analysis ◽  
Design And Development ◽  
Environmentally Conscious ◽  
Noise Barrier
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