Pitch changer with glitch minimizer

Details Pitch changer with glitch minimizer Pitch changer with glitch minimizer

1981-04-30

1984-08-07

Gruber, Felix D.

Electrical audio signal processing systems and devices

Sound effects

381 34, 381 36, G10L 100, H04B 166, G11B 502

Patent

active

044647840

ABSTRACT:
A pitch changer with glitch minimizer is disclosed. The pitch changer changes the pitch of an input audio signal to a higher or lower level as desired. When performing such a pitch changing operation, certain portions of the input signal must be either repeated or deleted in the audio output signal. Such an operation makes it necessary to splice together two sub-segments of the audio input signal at various times throughout the operation of the pitch changer. The present invention minimizes glitches which would otherwise result in the audio output signal by determining the most desirable splice point in a predetermined range of splice points and causing the splice to occur at that point.

REFERENCES:
patent: Re31172 (1983-03-01), Nishimura et al.
patent: 3369077 (1968-02-01), French et al.
patent: 3621150 (1971-11-01), Pappas
patent: 3662115 (1972-05-01), Saito et al.
patent: 3681756 (1972-08-01), Burkhard et al.
patent: 3965298 (1976-06-01), Carlson
patent: 4121058 (1978-10-01), Jusko et al.
patent: 4228322 (1980-10-01), Bringol et al.
patent: 4369336 (1983-01-01), Agnello

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