Title :
Adaptive array noise suppression of handsfree speaker input in cars
Author :
Nordholm, Sven ; Claesson, Ingvar ; Bengtsson, Bengt
fDate :
11/1/1993 12:00:00 AM
Abstract :
Handsfree speaker input of mobile telephones is most desirable today in order to enable safe operation in cars. This is also a prerequisite for voice control of car devices. This paper presents an “on the road” evaluation of the performance of an adaptive microphone array for speech enhancement in cars. The results show a signal-to-noise ratio (SNR) improvement in the range of 10-15 dB over the telephone frequency range with a slight favour for higher frequencies when driving at normal speeds
Keywords :
acoustic arrays; acoustic signal processing; adaptive filters; array signal processing; microphones; mobile radio systems; noise abatement; spatial filters; speech recognition equipment; telephone sets; SNR improvement; adaptive microphone array; cars; handsfree speaker input; mobile telephones; noise suppression; signal-to-noise ratio; speech enhancement; Acoustic noise; Adaptive algorithm; Adaptive arrays; Adaptive filters; Filtering; Least squares approximation; Microphone arrays; Signal to noise ratio; Spatial resolution; Telephony;
Journal_Title :
Vehicular Technology, IEEE Transactions on
