Error Metrics for Impaired Auditory Nerve Responses of Different Phoneme Groups
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Citation: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 response errors.
Other Titles:Interspeech 2009
Keywords:auditory periphery model, hearing aids, sensorineural hearing loss, phonemic degradation