Modal coupling and acoustic intensity measurements
Abstract
Acoustic-intensity measurement techniques for highly resonant coupled structural-acoustic systems are discussed. Frequency-averaging effects are shown to cause inaccurate results in such systems, and it is recommended that the analysis bandwidth be selected carefully to account for the response modal density and Q factor. The applicability of these findings to the analysis of reverberation chambers is indicated.
- Publication:
-
Journal of Sound Vibration
- Pub Date:
- April 1989
- DOI:
- 10.1016/0022-460X(89)90529-4
- Bibcode:
- 1989JSV...130..171S
- Keywords:
-
- Acoustic Coupling;
- Modal Response;
- Signal Processing;
- Sound Intensity;
- Structural Vibration;
- Digital Electronics;
- Noise Propagation;
- Random Noise;
- Spatial Distribution;
- Vibration Damping;
- Acoustics