Musical tone synthesizing apparatus using comb filter

Details Musical tone synthesizing apparatus using comb filter Musical tone synthesizing apparatus using comb filter

1993-03-02

1995-08-15

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84659, 84DIG9, G10H 500, G10H 112

Patent

active

054421306

ABSTRACT:
The musical tone synthesizing apparatus utilizes a loop circuit receptive of an input signal for looping the same with a given delay time to produce an output signal representative of a musical tone. The loop circuit includes a delay element for delaying the input signal and a feedback path for feeding back the delayed input signal to the delay element. A control unit is provided for controlling the delay element according to a designated pitch of a musical tone so as to set the delay time of the loop circuit to thereby determine the pitch of the musical tone. A generator generates the input signal containing various frequency components. A high-pass filter is connected precedingly to the loop circuit for selectively attenuating relatively lower frequency components of the input signal, which have periods longer than the set delay time of the loop circuit.

REFERENCES:
patent: 4649783 (1987-03-01), Strong et al.
patent: 4984276 (1991-01-01), Smith
patent: 5212334 (1993-05-01), Smith, III
patent: 5241127 (1993-08-01), Kobayashi
patent: 5245127 (1993-09-01), Yamauchi et al.
patent: 5264659 (1993-11-01), Kunimoto
patent: 5272275 (1993-12-01), Kunimoto
patent: 5286914 (1994-02-01), Kunimoto
patent: 5286915 (1994-02-01), Komano et al.
patent: 5286916 (1994-02-01), Yamauchi

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