Projects
- Research on MIMO Audio Signal Sensing Processing Technology Based on Compressive Sensing Theory. Funded by Huawei.
System description:
Aims：
The sound field should be reconstructed at a high accuracy under a limited bitrate achieved through a finite number of microphones.
Achievements：
A prototype system used for sound field information sampling and rebuilt.
Technique advantages：
Higher resolution to audio signals.
Closer to the nature information bitrate of signal transmission.
Application scenes：
conference system, movie product;
System scheme:
Key issues:
The structured sparse representation of audio signals:
Distributed compressed sensing:
| J:No. of sensors | M:No. of needed measurements to reconstruct fully | Sampling rate / Nyquist rate |
| 32 | 7 | 1/7 |
| 16 | 8 | 1/6 |
| 8 | 10 | 1/5 |
| 4 | 13 | 1/4 |
| 2 | 16 | 1/3 |