Title :
A versatile system for the generation and the development of speech coding strategies in cochlear implants
Author :
Tönder, Norbert ; Hartmann, Rainer ; Klinke, Rainer
Author_Institution :
Phys. Inst. III, Frankfurt Univ., Germany
fDate :
6/1/1998 12:00:00 AM
Abstract :
A signal processor-based (DSP32C) stimulation system for cochlear implants has been developed. This system allows up to 14 stimulation channels (place principle) and conserves the time structure of the acoustic signal (periodicity principle). Any combination of these features is possible; in compressed analogue mode, pulsatile mode, or combinations of both. The system also takes electrical crosstalk into account caused by the electrical properties of the inner ear and compensates for it. Lateral inhibition strategies improve spatial resolution. Finally, the system offers an interface for the generation of quick continuous interleaved sampling strategies (CIS); up to 11000 pulses/s per channel.
Keywords :
hearing aids; medical signal processing; prosthetics; speech coding; DSP32C; acoustic signal time structure; channel interaction; cochlear implants; compressed analogue mode; electrical crosstalk; inner ear electrical properties; pulsatile mode; quick continuous interleaved sampling strategies; signal processor-based stimulation system; speech coding strategies; stimulation channels; Animals; Cochlear implants; Ear; Electrical stimulation; Electrodes; Frequency; Nerve fibers; Signal processing; Speech coding; Speech processing; Cochlear Implants; Data Display; Equipment Design; Humans; Phonetics; Signal Processing, Computer-Assisted; Software; User-Computer Interface;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
