Text-to-speech synthesis by concatenation using or modifying clu

Details Text-to-speech synthesis by concatenation using or modifying clu Text-to-speech synthesis by concatenation using or modifying clu

1997-05-07

1998-04-14

MacDonald, Allen R.

395 269, 395 271, 395 277, 395 276, G10L 504

Patent

active

057403201

ABSTRACT:
In a waveform compilation (waveform concatenation or synthesis-by-rule) type speech synthesis method and speech synthesizer, phoneme waveform segments in natural speech waveforms are clustered, and one of the phoneme waveform segments having a parameter nearest the centroid of LPC parameters of all the phoneme waveforms in each cluster is selected and stored as a representative phoneme waveform in a waveform information memory. When synthesizing a speech waveform, representative phoneme waveforms of the same phonemes, whose context is most similar to that of each phoneme of a phoneme string of the speech to be synthesized, are selectively read out of the waveform information memory and thus read-out representative phoneme waveforms are sequentially concatenated for output as a continuous synthesized speech waveform.

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Jonathan Allen, "Overview of Text-to-Speech Systems", chapter 23 in Advances in Speech Signal Processing, edited by Sadaoki Furui and M. Mohan Sondhi, Marcel Dekker, Inc., 1991.
Mark Y. Liberman and Kenneth W. Church, "Text Analysis and Word Pronunciation in Text-to-Speech", chapter 24 in Advances in Speech Signal Processing, edited by Sadaoki Furui and M. Mohan Sondhi, Marcel Dekker, Inc., 1991.
Hirokazu Sato, "Speech Synthesis for Text-to-Speech Systems", chapter 25 in Advances in Speech Signal Processing, edited by Sadaoki Furui and M. Mohan Sondhi, Marcel Dekker, Inc., 1991.
Douglas O'Shaughnessy, "Approaches to Improve Automatic Speech Synthesis", chapter 14 in Modern Methods of Speech Processing, edited by Ravi P. Ramachandran and Richard J. Mammone, Kluwer Academic Publishers, 1995.
Nakajima et al., "Automatic Generation of Synthesis Units Based on Context Oriented Clustering", ICASSP, New York, pp. 659-662, Apr. 1988.

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