Speech synthesizer

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system

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Details

381 36, 381 40, 381 51, 381 53, 3645135, G10L 500

Patent

active

048295736

ABSTRACT:
A phonetically-driven speech synthesizer and method substantially entirely embodied in a programmed microprocessor. Information indicative of control parameters for each of a plurality of phonemes is stored in a phoneme parameter matrix and selectable by phoneme code. Time-invariant programming controls operation during successive operating cycles of equal time duration to obtain parameter information in a predetermined sequence for each selected phoneme, update control signals as a function of such parameter information, and operate a lattice filter vocal tract as a function of updated control signals to generate phonetic sounds. Separate sources of vocal and fricative sounds comprise corresponding look-up tables which are accessed are required during each operating cycle.

REFERENCES:
patent: 4264783 (1981-04-01), Gagnon
patent: 4360708 (1982-11-01), Taguchi et al.
patent: 4392018 (1983-07-01), Fette
patent: 4507750 (1985-03-01), Frantz et al.

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