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Accurate spectral envelope estimation for articulation-to-speech synthesis

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http://www.isca-speech.org/archive_open/ssw5/ssw5_019.html
Original languageEnglish
Title of host publicationProc. 5th ISCA Speech Synthesis Workshop
PublisherInternational Speech Communication Association
Pages19-24
Number of pages6
Publication statusPublished - 1 Jun 2004

Abstract

This paper introduces a novel articulatory-acoustic mapping in which detailed spectral envelopes are estimated based on the cepstrum, inclusive of the high-quefrency elements which are discarded in conventional speech synthesis to eliminate the pitch component of speech. For this estimation, the method deals with the harmonics of multiple voiced-speech spectra so that several sets of harmonics can be obtained at various pitch frequencies to form a spectral envelope. The experimental result shows that the method estimates spectral envelopes with the highest accuracy when the cepstral order is 48--64, which suggests that the higher order coeffcients are required to represent detailed envelopes reflecting the real vocal-tract responses.

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