Syllable-beat-point synchronized rule-based speech synthesis fro

Details Syllable-beat-point synchronized rule-based speech synthesis fro Syllable-beat-point synchronized rule-based speech synthesis fro

1995-06-14

1997-10-28

MacDonald, Allen R.

395 269, G10L 504

Patent

active

056825021

ABSTRACT:
In a speech synthesizer, each frame for generating a speech waveform has an expansion degree to which the frame is expanded or compressed in accordance with the production speed of synthetic speech. In accordance with the set speech production speed, the time interval between beat synchronization points is determined on the basis of the speed of the speech to be produced, and the time length of each frame present between the beat synchronization points is determined on the basis of the expansion degree of the frame. Parameters for producing a speech waveform in each frame are properly generated by the time length determined for the frame. In the speech synthesizer for outputting a speech signal by coupling phonemes constituted by one or a plurality of frames having phoneme vowel-consonant combination parameters (VcV, cV, or V) of the speech waveform, the number of frames can be held constant regardless of a change in the speech production speed. This prevents degradation in the tone quality or a variation in the processing quantity resulting from a change in the speech production speed.

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Jonathan Allen, "Overview of Text-to-Speech Systems", in Advances in Speech Signal Processing, edited by Sadaoki Furui and M. Mohan Sondhi, Marcel Dekker, Inc., chapter 23, pp. 741-790 1992.
Hirokazu Sato, "Speech Synthesis for Text-to-Speech Systems", in Advances in Speech Signal Processing, edited by Sadaoki Furui and M. Mohan Sondhi, Marcel Dekker, Inc., chapter 25, pp. 833-853 1992.
Chris Rowden , "Synthesis", in Speech Processing, edited by Chris Rowden, McGraw-Hill Book Company, chapter 6, pp. 184-222 1992.

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