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

Volume

i

fYear

1994

fDate

19-22 Apr 1994

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.389264

Filename

389264