Digital filter for an electronic musical instrument

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

1983-08-04

1985-11-26

Witkowski, S. J.

Music

Instruments

84 122, 84DIG9, 328167, 333165, 333166, 364724, 381 51, G10H 112

Patent

active

045548587

ABSTRACT:
A digital filter imparting a desired tone color to the tone signal is realized by the combination of a digital pole filter and a digital zero filter capable of controlling a pole and a zero in an amplitude-frequency characteristic respectively. The amplitude-frequency characteristic of the digital filter is a composite of the respective characteristics of the pole filter and the zero filter. A "peak" portion and a "valley" portion in this composite characteristic can be set independently by the pole control of the pole filter and the zero control of the zero filter, whereby the desired tone color characteristic can be readily realized. Further, the digital filter may comprise a plurality of digital filters having respective different constructions and a connection switching circuit capable of setting arbitrarily connection between these filters. The filter characteristic as a whole can be diversely altered by changing the connection, whereby diverse tone color characteristics can be realized with ease.

REFERENCES:
patent: 4125900 (1978-11-01), Betts
patent: 4136398 (1979-01-01), Eggermont
patent: 4265158 (1981-05-01), Takahashi
patent: 4300435 (1981-11-01), Schmoll, III
patent: 4338581 (1982-07-01), Morgan
patent: 4358737 (1982-11-01), Bennett
patent: 4360791 (1982-11-01), Norris et al.
patent: 4377793 (1983-03-01), Horna
patent: 4377794 (1983-03-01), Sakaue et al.
patent: 4378469 (1983-03-01), Fette
patent: 4433604 (1984-02-01), Ott
patent: 4443859 (1984-04-01), Wiggins
patent: 4472993 (1984-09-01), Futamase et al.

Affiliated with

Also associated with

Rating

Digital filter for an electronic musical instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital filter for an electronic musical instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital filter for an electronic musical instrument will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-265041