Electronic keyboard instrument with a simple tone generation assignor
AssigneeKabushiki Kaisha Kawai Gakki Seisakusho
InventorToru Suzuki
Life of this patent
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Abstract
A tone generation apparatus for an electronic keyboard instrument which stores key information for at least one channel in an assignment memory (33), and sets tone source parameters of a tone generator (19) according to the key information is disclosed. A key ON/OFF register (31) having a bit string corresponding to key numbers stores key ON/OFF information. When a key corresponding to the currently tone-ON key information stored in the assignment memory (33) is released, ON key information in the register (31) is searched by a search block (32) from, e.g., the high pitch side. If another ON key information is detected, the content of the assignment memory (33) is changed to the key information so as to generate a corresponding tone.
Claims3
A tone generation apparatus for an electronic keyboard instrument, comprising:
- an assignment memory for storing key information for at least one channel, and transferring the key information to a tone generator;
- storage means, having a bit string corresponding to key numbers, for storing key ON/OFF information of a key in the corresponding bit;
- search means for searching key ON information stored in said storage means in a predetermined pitch order;
- and
- assignment control means for, when a key corresponding to tone-ON key information stored in said assignment memory is released, changing a content of said assignment memory with another ON key information obtained by said search means, and causing said assignment memory to supply the changed key information to said tone generator.
Dependencies are inferred from the claim text.