Music – Instruments
Patent
1986-06-18
1988-12-06
Witkowski, Stanley J.
Music
Instruments
84 103, 84 119, 84 124, 340365S, G10H 106, G10H 700
Patent
active
047888962
ABSTRACT:
A tone generator includes a plurality of tone generation channels each comprising one or more operation channels. One operation channel performs basic operation of a tone signal computing operation (e.g., FM or AM) and a tone signal is generated by using one or more operation channels for one tone generation channel. Tone generation channels in the tone generator are established according to a selected performance mode. In a first mode, the operation channels are divided into N groups and N tone generation channels are established in correspondence to the respective operation channel groups. In a second mode, the operation channels are divided into M groups and M tone generation channels are established in correspondence to the respective operation channel groups wherein N is a different number from M. Tone generation channels of the number required according to the selected performance mode can be established by efficiently utilizing the operation channels of a limited number.
REFERENCES:
patent: 3882751 (1975-05-01), Tomisawa et al.
patent: 4018121 (1977-04-01), Chowning
patent: 4543869 (1985-10-01), Kawashima et al.
Suzuki Shigeru
Uchiyama Yasuji
Nippon Gakki Seizo Kabushiki Kaisha
Witkowski Stanley J.
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