Patent
1992-12-23
1995-01-10
MacDonald, Allen R.
395 276, G10L 900
Patent
active
053815149
ABSTRACT:
A speech synthesizer includes a first indicator for indicating the amplitude of a waveform by using a random number, a second indicator for indicating the superposition period for waveforms by using a random number, a waveform generator for generating first and second waveforms having an amplitude indicated by the first indicator, and a waveform superposition device for synthesizing an unvoiced speech waveform by superposing the second waveform generated by the waveform generator onto a waveform obtained by delaying the first waveform by a superposition period indicated by the second indication means. The speech synthesizer is capable of making the frequency characteristic of unvoiced speech analogous to that of white noise, and generating synthesized speech which is natural and analogous to an actual human voice.
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"The Use of Linear Protection of Speech In Computer Music Applications", The Journal of the Audio Engineering Society, J. A. Moorer, vol. 27, No. 3, Mar. 1979, pp. 134-140, New York.
Aso Takashi
Ohora Yasunori
Canon Kabushiki Kaisha
Doerrler Michelle
MacDonald Allen R.
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