Digital filter for an electronic musical instrument

Details Digital filter for an electronic musical instrument Digital filter for an electronic musical instrument

1982-12-21

1985-10-22

Isen, Forester W.

Music

Instruments

84DIG9, G10H 102

Patent

active

045481199

ABSTRACT:
An electronic musical instrument comprises a keyboard, a tone generator and a digital filter. The tone generator bit-serially generates a musical tone signal corresponding to a depressed key on the keyboard. The digital filter bit-serially performs a digital filtering operation of the musical tone signal in accordance with the predetermined amplitude-frequency characteristic. A musical tone is produced based on an output of the digital filter, whereby the characteristic is imparted to the musical tone. This bit-serial processing in the digital filter makes not only the circuit construction of the digital filter itself but also that of the electronic musical instrument incorporating this digital filter smaller and simpler.

REFERENCES:
patent: 4130043 (1978-12-01), Niimi
patent: 4267761 (1981-05-01), Deutsch
patent: 4407018 (1983-09-01), Kanemasa
patent: 4416179 (1983-11-01), Wachi

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