Title :
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
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;
Conference_Titel :
Signal Processing Systems, 2008. SiPS 2008. IEEE Workshop on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-2923-3
Electronic_ISBN :
1520-6130
DOI :
10.1109/SIPS.2008.4671763
