Title :
Combined monaural and binaural localization of sound sources
Author :
Chau, William ; Duda, Richard O.
Author_Institution :
Dept. of Electr. Eng., San Jose State Univ., CA, USA
fDate :
Oct. 30 1995-Nov. 1 1995
Abstract :
In this paper we combine monaural estimates of elevation with binaural estimates of azimuth and elevation. The monaural estimates are derived from the second difference of the amplitude spectrum, and are useful in the median plane, where binaural elevation estimates are very poor; however, they are source dependent, and do not provide azimuth information. The binaural estimates are derived from the interaural intensity difference, and are accurate away from the median plane. For a white-noise source in an anechoic environment, we show that the combination is accurate to within 2/spl deg/ for azimuth and 12/spl deg/ for elevation. Good performance is also obtained for speech, but accuracy degrades as the source bandwidth is reduced.
Keywords :
acoustic signal processing; amplitude spectrum; azimuth; combined monaural binaural localization; elevation; interaural intensity difference; median plane; sound sources; source bandwidth; speech; white-noise source; Acoustic noise; Amplitude estimation; Azimuth; Bandwidth; Degradation; Frequency estimation; Spectral analysis; Speech; State estimation; Transfer functions;
Conference_Titel :
Signals, Systems and Computers, 1995. 1995 Conference Record of the Twenty-Ninth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-7370-2
DOI :
10.1109/ACSSC.1995.540905