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Reconstruction of mutilated speech

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3 Author(s)
Kabrisky, M. ; Wright-Patterson AFB, OH, USA ; Rogers, S.K. ; Bashir, N.A.

A system has been developed to enhance the quality of mutilated speech. A standard spectrogram analysis of the damaged speech is performed. The speech is then resynthesized as a sum of computer-generated sinusoids whose amplitudes and phases are derived partly from the given mutilated speech signal and partly from rules based on known properties of normal speech. The sinusoids selected are only approximate harmonics of the glottal pitch and are selected by a nonlinear, noncausal set of rules to reduce the nonspeech components in the synthesized speech output. The system has been shown to increase the quality of the mutilated speech appreciably.<>

Published in:

Aerospace and Electronic Systems Magazine, IEEE  (Volume:4 ,  Issue: 9 )