Research on MIMO Audio Signal Sensing Processing Technology Based on Compressive Sensing Theory

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