The role of outer hair cell function in the perception of synthetic versus natural speech



Wolters, Maria and Campbell, Pauline and DePlacido, Christine and Liddell, Amy and Owens, David (2007) The role of outer hair cell function in the perception of synthetic versus natural speech. In: 8th Annual Conference of the International Speech Communication Association, Interspeech 2007, Antwerp, Belgium.

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Abstract

Hearing loss as assessed by pure-tone audiometry (PTA) is significantly correlated with the intelligibility of synthetic speech. However, PTA is a subjective audiological measure that assesses the entire auditory pathway and does not discriminate between the different afferent and efferent contributions. In this paper, we focus on one particular aspect of hearing that has been shown to correlate with hearing loss: outer hair cell (OHC) function. One role of OHCs is to increase sensitivity and frequency selectivity. This function of OHCs can be assessed quickly and objectively through otoacoustic emissions (OAE) testing, which is little known outside the field of audiology. We find that OHC function affects the perception of human speech, but not that of synthetic speech. This has important implications not just for audiological and electrophysiological research, but also for adapting speech synthesis to ageing ears.

Item Type: Conference or Workshop Item (Paper)
Date Deposited: 02 Nov 2009 17:24
Last Modified: 19 Mar 2014 12:56
URI: http://eresearch.qmu.ac.uk/id/eprint/779

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