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  SEPARATION OF SPEECH FROM SIMULTANEOUS TALKERS

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by R. I. Damper, J. R. Thorpe, C. H. Shadle
http://www.bib.ecs.soton.ac.uk/data/422/pdf/paper.pdf
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Abstract:

The separation of speech from two simultaneous talkers is a problem of some practical and theoretical importance. We describe a prototype separation system based on harmonic selection using comb filters. Hermes ’ subharmonic spectrum method is used to produce a number of (weighted) pitch estimates, with pitch tracks for the two talkers then found by constrained dynamic programming. The system has successfully separated composite male/female /hVd / tokens but performance is currently rather variable.

Citations

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8 Dynamic programming algorithm for optimal estimation of speech parameter contours – Ney - 1983
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3 Localization and separation of simultaneous voices with two microphones – Banks - 1993
2 Pitch analysis,” in Visual representations of speech signals – Hermes - 1993
1 Sound separation and auditory perceptual organization”, in The psychophysics of speech perception – Weintraub - 1987
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