DocumentCode :
3716037
Title :
Features for speaker localization in multichannel bilateral hearing aids
Author :
Joachim Thiemann;Simon Doclo;Steven van de Par
Author_Institution :
Dept. of Medical Physics and Acoustics and Cluster of Excellence "
fYear :
2015
Firstpage :
1266
Lastpage :
1270
Abstract :
Modern hearing aids often contain multiple microphones to enable the use of spatial filtering techniques for signal enhancement. To steer the spatial filtering algorithm it is necessary to localize sources of interest, which can be intelligently achieved using computational auditory scene analysis (CASA). In this article, we describe a CASA system using a binaural auditory processing model that has been extended to six channels to allow reliable localization in both azimuth and elevation, thus also distinguishing between front and back. The features used to estimate the direction are one level difference and five inter-microphone time differences of arrival (TDOA). Initial experiments are presented that show the localization errors that can be expected with this set of features on a typical multichannel hearing aid in anechoic conditions with diffuse noise.
Keywords :
"Azimuth","Microphones","Signal to noise ratio","Computational modeling","Auditory system","Training","Estimation"
Publisher :
ieee
Conference_Titel :
Signal Processing Conference (EUSIPCO), 2015 23rd European
Electronic_ISBN :
2076-1465
Type :
conf
DOI :
10.1109/EUSIPCO.2015.7362587
Filename :
7362587
Link To Document :
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