Abstract

The transmitter and the receiver in a communication system have to be designed optimally with respect to one another to ensure reliable and efficient communication. Following this principle, we derive an optimal filterbank for processing speech signal in the listener’s auditory system (receiver), so that maximum information about the talker’s (transmitter) message can be obtained from the filterbank output, leading to efficient communication between the talker and the listener. We consider speech data of 45 talkers from three different languages for designing optimal filterbanks separately for each of them. We find that the computationally derived optimal filterbanks are similar to the empirically established auditory (cochlear) filterbank in the human ear. We also find that the output of the empirically established auditory filterbank provides more than 90% of the maximum information about the talker’s message …

Date

January 1, 1970

Authors

Prasanta Kumar Ghosh, Louis M Goldstein, Shrikanth S Narayanan

Journal

Sadhana

Volume

36

Pages

699-712

Publisher

Springer-Verlag