DSP implementation of probabilistic sound source localization

Author

Yeom, Seung Seob ; Choi, Jong Suk ; Lim, Yoon Seob ; Park, Mignon

Author_Institution

Center for Cognitive Robot. Res., Korea Inst. of Sci. & Technol., Seoul

fYear

2008

fDate

8-10 Oct. 2008

Firstpage

204

Lastpage

209

Abstract

This paper describes a DSP implementation of probabilistic sound source localization algorithm. Time delay of arrival (TDOA) between two microphones through cross-correlation method has been used for sound localization in our robot platforms. However, since cross-correlation values are highly dependent on the upcoming sound signal and acoustic environment, time delay values and localization results are easily perturbed. Here, probabilistic method for sound source localization is presented. And its DSP implementation is applied to the pan-tilt robot that we developed.

Keywords

acoustic signal processing; correlation methods; digital signal processing chips; human-robot interaction; microphone arrays; probability; speech recognition; time-of-arrival estimation; DSP implementation; acoustic environment; cross-correlation method; human-robot interaction; microphone array; pan-tilt robot platform; probabilistic sound signal source localization algorithm; speech signal recognition; time delay of arrival estimation; time delay value; Delay effects; Digital signal processing; Hardware; Microphones; Particle filters; Robots; Signal processing algorithms; Speech; System-on-a-chip; Voltage control; DSP; probabilistic; sound source localization;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems, 2008. SiPS 2008. IEEE Workshop on

Conference_Location

Washington, DC

ISSN

1520-6130

Print_ISBN

978-1-4244-2923-3

Electronic_ISBN

1520-6130

Type

conf

DOI

10.1109/SIPS.2008.4671763

Filename

4671763