Method for varying the pitch of a musical tone produced through

Details Method for varying the pitch of a musical tone produced through Method for varying the pitch of a musical tone produced through

1995-11-09

1998-09-29

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84603, 84622, 84661, 84DIG9, G10H 112, G10H 708

Patent

active

058147500

ABSTRACT:
A method for resampling includes convolving a given set of samples with the impulse response function of a low-pass filter. In this method, values of the impulse response required for the convolution calculation are computed at the time of resampling from a segmented polynomial approximating the impulse response. In one embodiment, the method is applied to provide musical tones of various pitches from a stored waveform.

REFERENCES:
patent: 4108036 (1978-08-01), Slaymaker
patent: 4715257 (1987-12-01), Hoshiai et al.
patent: 4984495 (1991-01-01), Fujimori
patent: 5111417 (1992-05-01), Belloc et al.
patent: 5235534 (1993-08-01), Potter
patent: 5473555 (1995-12-01), Potter

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