Formant-based speech synthesizer employing demi-syllable concate

Details Formant-based speech synthesizer employing demi-syllable concate Formant-based speech synthesizer employing demi-syllable concate

1998-11-25

2000-11-07

Smits, Talivaldis I.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Synthesis

704265, 704200, 704262, 704267, 704268, G06F 1500, G10L 1300

Patent

active

061449393

ABSTRACT:
The concatenative speech synthesizer employs demi-syllable subword units to generate speech. The synthesizer is based on a source-filter model that uses source signals that correspond closely to the human glottal source and that uses filter parameters that correspond closely to the human vocal tract. Concatenation of the demi-syllable units is facilitated by two separate cross fade techniques, one applied in the time domain to the demi-syllable source signal waveforms, and one applied in the frequency domain by interpolating the corresponding filter parameters of the concatenated demi-syllables. The dual cross fade technique results in natural sounding synthesis that avoids time-domain glitches without degrading or smearing characteristic resonances in the filter domain.

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