Music – Instruments
Patent
1984-05-08
1986-06-17
Witkowski, S. J.
Music
Instruments
84 103, 84 128, 84DIG29, G10H 140, G10H 309, G11B 3102
Patent
active
045949301
ABSTRACT:
Apparatus for synchronizing playback rates of a plurality of music sources includes a reference generator generating a reference signal including beats, a music source producing a music signal representative of music, a discriminating circuit operative in response to the music signal for extracting beats involved in the music signal to produce a beat signal representative of the extracted beats, and control circuitry interconnected to the reference generator and music source for determining the time difference between the occurrence of beats involved in the reference signal and the occurrence of the beat signal to regulate the music source so as to make the time difference substantially constant. The music source will thereby produce the music signal with a phase difference of the beats involved in the music signal substantially constant with respect to the beats involved in the reference signal.
REFERENCES:
patent: 4344344 (1982-08-01), Nakada et al.
patent: 4378720 (1983-04-01), Nakada et al.
patent: 4402244 (1983-09-01), Nakada et al.
patent: 4419918 (1983-12-01), Dyck et al.
patent: 4432266 (1984-02-01), Nakada
patent: 4484507 (1984-11-01), Nakada et al.
patent: 4506580 (1985-03-01), Koike
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