ISCA Archive Eurospeech 1993
ISCA Archive Eurospeech 1993

A filtersank based on physiologically measured characteristics in an auditory model for speech signal processing

Tore Fjallbrant, Fisseha Mekuria, Shahrokh Amirijoo

It is shown that digital linear filter networks with characteristics similar to physiologically measured magnitude, phase and impulse response characteristics of channels with lower centre frequencies in the auditory pathway up to the auditory nerve can be found. An IIR filterbank with similar characteristics has been designed on a psychoacoustic frequency scale. An auditory image in a tonotopical versus periodicity space has ben constructed. This image is shown to posess a number of attractive features for speech recognition.