Abstract
The performance of a single acoustic dyadic sensor (ADS) in an isotropic noise field was analyzed here. The covariance matrix of the ADS outputs in the isotropic noise field was deduced and two beam-forming methods based on a single ADS were analyzed. Then, the formulas for the processing gains of the two beam-forming methods were derived. The simulation results indicated that ADS has better directivity and bigger processing gain under small hole-diameters; the processing gain of its conventional beamformer (CBF) based on a single ADS is between 5.23 dB to 6.12 dB, and the processing gain of its minimum variance distortionless response (MVDR) beamformer based on a single ADS is about 9.54 dB in different directions.
| Original language | English |
|---|---|
| Pages (from-to) | 120-125 |
| Number of pages | 6 |
| Journal | Zhendong yu Chongji/Journal of Vibration and Shock |
| Volume | 33 |
| Issue number | 18 |
| DOIs | |
| State | Published - 28 Sep 2014 |
Keywords
- Acoustic dyadic sensor
- Beam-forming
- Gain
- Isotropic noise field
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