Andrew Hines, Naomi Harte, Error Metrics for Impaired Auditory Nerve Responses of Different Phoneme Groups, Interspeech 2009, Brighton, 2009, 2009, 1119, 1122
An auditory nerve model allows faster investigation of new signal
processing algorithms for hearing aids. This paper presents
a study of the degradation of auditory nerve (AN) responses at
a phonetic level for a range of sensorineural hearing losses and
flat audiograms. The AN model of Zilany & Bruce was used to
compute responses to a diverse set of phoneme rich sentences
from the TIMIT database. The characteristics of both the average
discharge rate and spike timing of the responses are discussed.
The experiments demonstrate that a mean absolute error
metric provides a useful measure of average discharge rates
but a more complex measure is required to capture spike timing
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