Title :
Sound source localization for circular arrays of directional microphones
Author :
Rui, Yong ; Florêncio, Dinei ; Lam, Warren ; Su, Jinyan
Author_Institution :
Microsoft Corp., Redmond, WA, USA
Abstract :
Previous research in sound source localization has helped increase the robustness of estimates to noise and reverberation. Circular arrays are of particular interest for a number of scenarios, particularly because they can be placed in the center of the sources. First, that improves the sound capture due to the reduced distance. Second, it helps on the direction estimation, not only because of the reduced distance, but also because it increases the angle differences. Nevertheless, most research on circular arrays focused on the case of omni-directional microphones. In this paper, we present a new algorithm for sound source localization developed specifically for directional microphones. Results obtained from real meeting room setups show a typical error of less than 3 degrees.
Keywords :
array signal processing; audio signal processing; direction-of-arrival estimation; microphone arrays; source separation; direction estimation error; directional microphone circular arrays; meeting room setup; noise robustness; reverberation; sound capture improvement; sound source localization; Acoustic noise; Audio recording; Bandwidth; Cameras; Interference constraints; Loudspeakers; Microphone arrays; Noise reduction; Noise robustness; Reverberation;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1415654