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Extrema based unwarping for time-varying pitch estimation

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  • Electrical Communication Engineering

Abstract

We present an extrema based unwarping technique for signals with time-varying periodicity. We show that for arbitrary variation of pitch periodicity in speech signal,the unwarping technique maps the signals to periodic signals which enable eficient estimation of periodicity. We demonstrate the e´┐Żectiveness of the new technique using both synthetic and real speech signals.

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