US PATENT SUBCLASS 84 / 629
.~.~.~.~.~ Vibrato or tremolo

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
600  DF  .~ Electrical musical tone generation {5}
601  DF  .~.~ Data storage {6}
602  DF  .~.~.~ Digital memory circuit (e.g., RAM, ROM, etc.) {9}
626  DF  .~.~.~.~ Expression or special effects (e.g., force or velocity responsive, etc.) {7}
629.~.~.~.~.~ Vibrato or tremolo

DEFINITION

Classification: 84/629

Vibrato or tremolo:

(under subclass 626) Subject matter wherein an audio tone is frequency or amplitude modulated with a subaudio frequency.

SEE OR SEARCH CLASS

331, Oscillators,

178, for producing vibrato in the oscillator output frequency.

332, Modulators,

16+, for frequency modulation which produces vibrato; subclasses 31+ for amplitude modulation which produces tremolo.

381, Electrical Audio Signal Processing Systems and Devices, 62, for tremolo or vibrato effects.