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A Pitch-Based Method for the Estimation of Short Reverberation Time

Author： Wu Mingyang Wang DeLiang

Publisher： S. Hirzel Verlag

ISSN： 0001-7884

Source： Acta Acustica, Vol.92, Iss.2, 2006-03, pp. : 337-339

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

Reverberation corrupts harmonic structure in voiced speech. We observe that the pitch strength of voiced speech segments is indicative of the degree of reverberation. Consequently, we present an estimation method of reverberation time (T₆₀) based on pitch strength. The pitch strength is measured by deriving the statistics of relative time lags, defined as the distances from the detected pitch periods to the closest peaks in a correlogram. The monotonic relationship between the measured pitch strength and reverberation time learned from a corpus of reverberant speech with known reverberation times yields an estimate of T₆₀ up to 0.6 seconds.

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