Patent
1995-05-30
1998-04-28
MacDonald, Allen R.
395 275, G10L 302
Patent
active
057456518
ABSTRACT:
A speech synthesis method and a speech synthesis apparatus includes a system for synthesis by rule that prevents the quality of synthesized speech from deteriorating and for reducing the number of calculations that are required for the generation of a speech waveform. The speech synthesis apparatus includes a character series input section, for inputting a character series as phonetic text, a pitch waveform generator, for generating a pitch waveform by calculating a product of a matrix, which has been acquired for each pitch, and the character series, which is input by the character series input section, and a device for connecting pitch waveforms that are generated by the pitch waveform generator and for providing a speech waveform. The calculation method for the generation of such a pitch waveform provides a great reduction in the number of calculations that are required. In addition, in the calculation for the generation of a pitch waveform, a function that determines a frequency response is employed to convert a spectral envelope, which is obtained from a parameter, so that the timbres of synthesized speech can be changed without parameter operations.
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Aso Takashi
Fukada Toshiaki
Ohora Yasunori
Otsuka Mitsuru
Canon Kabushiki Kaisha
Dorvil Richemond
MacDonald Allen R.
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