Electronic musical instrument and signal processor having a tona

Details Electronic musical instrument and signal processor having a tona Electronic musical instrument and signal processor having a tona

1995-09-12

1997-12-30

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84630, 84662, 381 61, 381 63, G10H 100, G10H 102

Patent

active

057033129

ABSTRACT:
There are provided a tone source for generating tone signals in plural channels independently and effect impartment sections, provided in corresponding relations to the channels, for imparting individual effects to the tone signals of the channels generated by the tone source. Each of the effect impartment sections, in accordance with tone control information unique to the tone signal of the corresponding channel, controls a parameter of the effect to be imparted. In a case where any of the effect impartment sections uses a signal delaying memory to impart an effect, when a damping (or truncating process) is performed in any of the channels, the storage area to be used for the channel is switched to another unused storage area so as to prevent any preceding tone's delayed signal from being undesirably mixed into the signal of a new tone. In an application where a DSP is used to perform effect impartment, tone synthesis or the like, the size and position of a storage area for storing processed data are set variably to achieve efficient use of data memory. Further, a DSP program of different algorithms is automatically selected in accordance with performance information, to provide processing variety.

REFERENCES:
patent: 4524668 (1985-06-01), Tomisawa et al.
patent: 4998281 (1991-03-01), Sakata
patent: 5221803 (1993-06-01), Izumisawa et al.
patent: 5276273 (1994-01-01), Takauji
patent: 5542000 (1996-07-01), Semba
patent: 5546466 (1996-08-01), Ishiguro et al.
EPO Search Report EP 95 11 4273, Dec. 29, 1995.

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