Pitch frequency generation system in a speech synthesis system

Details Pitch frequency generation system in a speech synthesis system Pitch frequency generation system in a speech synthesis system

1988-07-11

1990-03-06

Harkcom, Gary V.

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

Loudspeaker operation

G10L 502

Patent

active

049072790

ABSTRACT:
A speech synthesis system comprises an input terminal for accepting text code, accent code, and phrase code. The speech synthesis system further comprises a converter for converting the text code to speech parameters for speech synthesis; an accent commend generator coupled to an output of the converter for providing a train of accent commands; a phrase command generator coupled to an output of the converter for providing a train of phrase commands; an accent command buffer for storing the accent commands; a phrase command buffer for storing the phrase commands; an accent component calculator operably coupled to the accent command buffer for providing contour of pitch frequency by accent component; a phrase component calculator operably coupled to the phrase command buffer for providing contour of pitch frequency by phrase component; an adder for providing a sum of output signals from the accent component calculator and the phrase component calculator; a device for providing fundamental frequency of voicing which is coupled to an output of the adder; a speech synthesizer coupled to an output of the device for providing the fundamental frequency and output of the converter; and an output terminal coupled to an output of the speech synthesizer for providing synthesized speech to an external circuit.

REFERENCES:
patent: 3704345 (1972-11-01), Coker et al.
patent: 4692941 (1987-09-01), Jacks et al.
"Analysis of Voice Fundamental Frequency Contours for Declarative Sentences in Japanese", Hiroya Fujisaki et al, J. Acoust. Soc. Japan, (E) 5, 4 (1984).
"Software for a Cascade/Parallel Format Synthesizer", J. Acoust. Soc. Am., 67, pp. 971-995, (1980).

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