A biologically inspired pitch determination algorithm

A biologically inspired pitch determination algorithm is presented. This algorithm combines existing models of the cochlea and inner-hair-cell based spike generation [Lopez et al., J. Acoust. Soc. Am. 110, 3107 (2001); Sumner et al., ibid. 113, 893–901 (2003)] to model spike trains in the auditory n...

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Published in:The Journal of the Acoustical Society of America 2006-11, Vol.120 (5_Supplement), p.3215-3215
Main Authors: Camacho, Arturo, Harris, John G.
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Harris, John G.
description A biologically inspired pitch determination algorithm is presented. This algorithm combines existing models of the cochlea and inner-hair-cell based spike generation [Lopez et al., J. Acoust. Soc. Am. 110, 3107 (2001); Sumner et al., ibid. 113, 893–901 (2003)] to model spike trains in the auditory nerve. The pitch and its salience are then estimated using a method proposed by Cariani [Cariani et al., J. Neurophysiol. 76, 1698–1716], which computes a summary autocorrelation function over the spike trains. Unlike Cariani’s work, where spike trains are obtained experimentally, we simulate the spike trains from biologically inspired models. The main contribution of our approach is to combine models of the auditory system and a pitch estimation method based on neural spike trains. The proposed algorithm was tested using standard synthesized sounds, speech, and singing voices. Results show that this algorithm better matches human performance as compared to traditional pitch detection algorithms used in automatic speech processing.
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title A biologically inspired pitch determination algorithm
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