simulations of SPEAK-type cochlear implant signal processors. Running head: Intelligibility of SPEAK-type processors
نویسندگان
چکیده
To assess whether more channels are needed to understand speech in noise than in quiet, speech was processed in a manner similar to SPEAK-like cochlear implant processors and presented at +2 dB S/N to normal hearing listeners for identification. The number of analysis filters varied from 8 to 16, and the number of maximum channel amplitudes selected in each cycle varied from 2 to 16. The results show that more channels are needed to understand speech in noise than in quiet, and that high levels of speech understanding can be achieved with 12 channels. Selecting more than 12 channel amplitudes out of 16 channels did not yield significant improvements in recognition performance.
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