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

fYear

2010

fDate

May 30 2010-June 2 2010

Firstpage

1414

Lastpage

1417

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.2010.5537295

Filename

5537295