Title :
Intelligent ubiquitous sensor network for sound acquisition
Author :
Kugata, Koji ; Takagi, Tomoya ; Noguchi, Hiroki ; Yoshimoto, Masahiko ; Kawaguchi, Hiroshi
Author_Institution :
Grad. Sch. of Eng., Kobe Univ., Kobe, Japan
fDate :
May 30 2010-June 2 2010
Abstract :
We propose a microphone array network that realizes ubiquitous sound acquisition. Nodes with 16 microphones are connected to form a large sound acquisition system that carries out voice activity detection (VAD), sound source localization and sound source separation. The three operations are distributed among nodes using network. Because the VAD is implemented to manage power consumption, the system consumes little power when speech is not active. The power of the VAD module is only 2.1 mW on an FPGA. The system can improve an SNR by 7.75 dB using 112 microphones.
Keywords :
acoustic signal detection; acoustic signal processing; intelligent sensors; microphone arrays; power consumption; source separation; speech processing; FPGA; VAD; intelligent sensor network; microphone array network; power 2.1 mW; power consumption; sound source localization; sound source separation; ubiquitous sound acquisition; voice activity detection; Acoustic sensors; Energy consumption; Energy management; Field programmable gate arrays; Intelligent networks; Intelligent sensors; Microphone arrays; Power system management; Source separation; Speech; Microphone array; distribution network; low-power system; sensor network; ubiquitous sensing;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537295
