Title :
A microphone array for car environments
Author_Institution :
ENST, Paris, France
Abstract :
The authors describe a microphone array for speech recording in car environments. The array is designed for hands-free radiotelephone, and is also used as a front-end for an automatic speech recognition system. The configuration of the array and the adaptive beamforming technique implemented are described and the performance of the array are evaluated. The measure of performance is the score obtained with a speech recognition system. Within the European ESPRIT project ARS (adverse environment recognition of speech), a prototype of this microphone array was built. It has eight microphones and works in real time, using one TMS C30 processor
Keywords :
audio recording; automobiles; microphones; radiotelephony; speech recognition; ARS; ESPRIT project; TMS C30 processor; adaptive beamforming; adverse environment recognition of speech; automatic speech recognition system; car environments; hands-free radiotelephone; microphone array; speech recording; Acoustic sensors; Array signal processing; Bandwidth; Delay; Loudspeakers; Microphone arrays; Noise reduction; Performance evaluation; Phased arrays; Speech recognition;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.225911
