Title :
On the importance of the microphone position for speech recognition in the car
Author :
Smolders, Johan ; Claes, Tom ; Sablon, Gert ; Van Compernolle, Dirk
Author_Institution :
ESAT, Katholieke Univ., Leuven, Heverlee, Belgium
Abstract :
One of the problems with speech recognition in the car is the position of the far talk microphone. This position not only implies more or less noise, coming from the car (engine, tires,...) or from other sources (traffic, wind noise,...) but also a different acoustical transfer function. In order to compare the microphone positions in the car, we recorded a multispeaker database in a car with 7 different positions and compared them on the basis of SNR and recognition rate. The position at the ceiling right in front of the speaker gave the best results
Keywords :
acoustic noise; automobiles; loudspeakers; speech recognition; SNR; acoustical transfer function; car; engine; far talk microphone; microphone position; multispeaker database; recognition rate; speech recognition; tires; traffic; wind noise; Databases; Engines; Finite impulse response filter; Frequency; Microphones; Signal to noise ratio; Speech enhancement; Speech recognition; Tires; Transfer functions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389264
