Electronic musical instrument having automatic channel-assigning

Details Electronic musical instrument having automatic channel-assigning Electronic musical instrument having automatic channel-assigning

1992-08-27

1994-02-15

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84618, 84627, 84DIG2, G10H 1057, G10H 122, G10H 136

Patent

active

052869105

ABSTRACT:
An electronic musical instrument provides plural channels from which manual-performance sounds and/or automatic-performance sounds (e.g., automatic-accompaniment sounds) are generated. Herein, the manual-performance sound is designated by a performance manually made by a performer, while the automatic-performance sound is designated on the basis of automatic-performance information which is stored in a memory or the like in advance. Normally, a new musical tone is assigned to an unoccupied channel which is not occupied with a tone generation, so that the new musical tone will be generated from the unoccupied channel. However, under a full-channel condition where all of the channels are occupied with the tone generation, a new manual-performance sound is assigned to one of the channels whose envelope value is the smallest. If a new automatic-performance sound is designated under the full-channel condition, this new automatic-performance sound is assigned to one of the channels occupied with the tone generation of the automatic-performance sounds which receives a key-off command and of which envelope value is the smallest. If it fails to detect such channel, the new automatic-performance sound is assigned to one of the channels occupied with the tone generation of the manual-performance sounds which receives a key-off command but sustains to generate the manual-performance sound. Thus, each of the manual-performance sounds and automatic-performance sounds can be smoothly and automatically assigned to an appropriate one of the channels.

REFERENCES:
patent: 4706538 (1987-11-01), Yoshida
patent: 5042355 (1991-08-01), Kozuki

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