Microphone array network for ubiquitous sound acquisition

We propose a microphone array network that realizes ubiquitous sound acquisition. Nodes with 16 microphones are connected to form a huge sound acquisition system that carries out VAD, sound source localization and separation. The three operations are distributed among nodes. The VAD is implemented to manage power consumption. Consequently, the system consumes little power when speech is not active. The VAD module uses only 2.1 mW. The system can improve an SNR by 7.75 dB using 112 microphones.

[1]  James Glass,et al.  A 1020-Node Modular Microphone Array and Beamformer for Intelligent Computing Spaces , 2004 .

[2]  S. Kagami,et al.  Real-time 2 dimensional sound source localization by 128-channel huge microphone array , 2004, RO-MAN 2004. 13th IEEE International Workshop on Robot and Human Interactive Communication (IEEE Catalog No.04TH8759).

[3]  R. O. Schmidt,et al.  Multiple emitter location and signal Parameter estimation , 1986 .

[4]  James L. Flanagan,et al.  The huge microphone array , 1998, IEEE Concurr..

[5]  Masahiko Yoshimoto,et al.  An ultra-low-power VAD hardware implementation for intelligent ubiquitous sensor networks , 2009, 2009 IEEE Workshop on Signal Processing Systems.

[6]  James L. Flanagan,et al.  The Huge Microphone Array. 2 , 1999, IEEE Concurr..