10th Annual Conference of the International Speech Communication Association

Brighton, United Kingdom
September 6-10, 2009

Error Metrics for Impaired Auditory Nerve Responses of Different Phoneme Groups

Andrew Hines, Naomi Harte

Trinity College Dublin, Ireland

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.

Full Paper

Bibliographic reference.  Hines, Andrew / Harte, Naomi (2009): "Error metrics for impaired auditory nerve responses of different phoneme groups", In INTERSPEECH-2009, 1119-1122.