Design of electronic speech processing machine for cochlear implants based on STFT

The principles of the cochlear implant and the speech processing strategies were presented. Then, the performance of spectral peak method and short-time Fourier transform method in DSPs were proposed to be used for cochlear implant. The experiment proved: The two strategies of the electronic cochlear system both could get good speech recognition, but the performance of STFT method has a great flexibility to pick up channelspsila parameters to stimulate the auditive nerves of a totally or profoundly deaf person and it had a faster processing speed. The traditional processor was made of ASIC circuit, its design and improvement was very complicated. The hardware design in DSPs could be simpler and more flexible.