Cochlear-implant simulations
A noise-excited vocoder simulates certain aspects of cochlear-implant
processing, by reducing spectral information and discarding temporal
fine-structure information. This has surprisingly little effect
on speech
intelligibility in quiet:
1.
Unprocessed sentence
2.
Processed with a 24-channel noise-excited vocoder
However, in more complex situations, where the speech has to be
segregated from competing sounds, cochlear-implant processing has
a highly detrimental effect on intelligibility.
3.
Unprocessed sentence in background speech
4.
Processed with a 24-channel vocoder
For more details
see Qin and Oxenham (2003).
Auditory
chimaeras
ASA
sound examples
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