1974-11-18
1976-11-30
Claffy, Kathleen H.
G10L 100
Patent
active
039951162
ABSTRACT:
Disclosed is a system for synthesizing emphasis-controlled speech from stored signals representative of words precoded by a phase vocoder having analysis bands which are wide relative to the voice harmonic frequency spacings. The stored signals comprise short-time Fourier transform parameters which describe the magnitude and the phase derivative of the short-time speech spectrum. Speech emphasis-controlled synthesis is achieved by extracting the stored signals of chosen words under control of a pitch-duration signal, by concatenating the extracted signals, by modifying the magnitude parameters of the extracted signals to effect a desired speech intensity, by interpolating the extracted parameters, and by decoding the resultant signals in accordance with phase vocoder techniques.
REFERENCES:
patent: 3349180 (1967-10-01), Coker
patent: 3360610 (1967-12-01), Flanagan
patent: 3704345 (1972-11-01), Coker et al.
patent: 3828132 (1974-08-01), Flanagan et al.
Lee F., "Reading Machine: Text to Speech," IEEE Trans. on Audio, vol. AU-17, No. 4, Dec. 1969.
Bell Telephone Laboratories Incorporated
Claffy Kathleen H.
Kemeny E. S. Matt
Logan H. L.
Nimtz Robert O.
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