Tone signal generator for producing multioperator tone signals

Music – Instruments – Electrical musical tone generation

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84627, G10H 1057, G10H 106

Patent

active

056440987

ABSTRACT:
A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a waveform signal in response to a phase angle address signal. Each wave table stores a different waveform. The selector selects one of the wave tables in response to a plurality of selection signals such that the selected wave table largely provides the waveform signal upon being addressed largely by the phase angle address signal. Selection of the selected wave table varies with each selection signal. The enveloper impresses an envelope signal on the waveform signal. The envelope signal is used as a carrier or modulator for generating the FM tone signal.

REFERENCES:
patent: Re33558 (1991-03-01), Katoh
patent: 4018121 (1977-04-01), Chowning
patent: 4138915 (1979-02-01), Nagai et al.
patent: 4201105 (1980-05-01), Alles
patent: 4249447 (1981-02-01), Tomisawa
patent: 4297933 (1981-11-01), Nishimoto
patent: 4301704 (1981-11-01), Nagai
patent: 4406204 (1983-09-01), Katoh
patent: 4422362 (1983-12-01), Chibana
patent: 4455911 (1984-06-01), Yamada
patent: 4554857 (1985-11-01), Nishimoto
patent: 4616546 (1986-10-01), Uchiyama et al.
patent: 4643066 (1987-02-01), Oya
patent: 4788896 (1988-12-01), Uchiyama
patent: 4813326 (1989-03-01), Hirano
patent: 5033352 (1991-07-01), Kellogg et al.
patent: 5076133 (1991-12-01), Toda
patent: 5094136 (1992-03-01), Kudo et al.
patent: 5140886 (1992-08-01), Masaki et al.
Samson, "A General-Purpose Digital Synthesizer," J. Aud. Eng. Soc., Mar. 1980, pp. 106-113.
Yamaha.RTM. LSI, YMF278B FM + Wave table Synthesizer LSI, YMF288 Catalog, Catalog No. LSI-4MF2783, 1994, pp. 1-22.
Computer Music Journal, A One-Card 64 Channel Digital Synthesizer, vol. 1, No. 4, Nov. 1977, pp. 7-9.
CS9203, Advanced Music Synthesizer, Crystal Semiconductor Corporation Preliminary Product Information, Nov. 1993, pp. 1-19.
Yamaha.RTM. LSI, YM3812 FM Operator Type-LII (OPL II), Catalog No. LSI-2128122, .COPYRGT.1989, pp. 1-10.
YM3812 FM Operator Type-L (OPL II), Application Manual, .COPYRGT.1987, pp. 1-31.
Yamaha.RTM. LSI, YMF262 FM Operator Type L3 (OPL3), .COPYRGT.1988, pp. 1-17.
Harold G. Alles, Music Synthesis Using Real Time Digital Techniques, Proceedings of the IEEE, vol. 68, No. 4, Apr. 1980, pp. 436-449.
Yamaha Corporation, Yamaha LSI YMF278-F (OPL4), 4 Operator FM and WAVE Synthesis Chip, Application Manual, Apr. 1, 1993, pp.1-32.

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