Music – Instruments
Patent
1983-11-21
1985-09-10
Witkowski, S. J.
Music
Instruments
84 101, 84 124, G10H 108, G10H 700
Patent
active
045398836
ABSTRACT:
This electronic musical instrument comprises digital tone generation circuits having a plurality of tone generation channels each being capable of selecting a tone color independently from other channels. In each of the tone generation circuits, digital tone signals having the selected tone colors are produced in response to operation of a key or a switch. A specific number of analog channels are provided for processing analog tone signals channel by channel and a channel divider is also provided for distributing the digital tone signals generated by the digital tone generation circuits to these analog channels in specific combinations according to the selected tone colors. This channel divider further mixes the distributed digital tone signals together for each of the analog channels for time-division-multiplexing the mixed digital tone signals for each of the analog channels. The multiplexed digital tone signals are converted to analog signals by means of a single digital-to-analog converter. The converted analog signals are sampled and held for each of the analog channels and are made parallel.
REFERENCES:
patent: 4144789 (1979-03-01), Deutsch
patent: 4269101 (1981-05-01), Deutsch et al.
patent: 4287802 (1981-09-01), Imamura et al.
Nippon Gakki Seizo Kabushiki Kaisha
Witkowski S. J.
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