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US 5,029,211 AGranted
Speech analysis and synthesis system
AssigneeNEC Corporation
InventorKazunori Ozawa
Life of this patent
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Abstract
A speech analysis and synthesis system operates to determine a sound source signal for the entire interval of each speech unit which is to be used for speech synthesis, according to a spectrum parameter obtained from each speech unit based on cepstrum. The sound source signal and the spectrum parameter are stored for each speech unit. Speech is synthesized according to the spectrum parameter while controlling prosody of the sound source signal. The spectrum of the synthesized speech is compensated through filtering based on cepstrum.
Claims3
A speech analysis and synthesis system comprising:
- means for determining a sound source signal for an entire interval of a speech unit which is to be used for speech synthesis, according to a spectrum parameter obtained from a signal of said speech unit based on cepstrum;
- means for storing said sound source signal and said spectrum parameter for said speech unit;
- means for synthesizing speech according to said spectrum parameter while controlling prosodic information on a duration, a pitch and an amplitude of said speech unit concerning said sound source signal;
- and
- filter means for compensating spectrum of said synthesized speech, to remove spectral distortion, based on cepstrum from said synthesized speech and cepstrum from said stored spectrum parameter.
2 more elements
Dependencies are inferred from the claim text.