US PATENT SUBCLASS 84 / 624
.~.~.~.~.~ Modulation

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}
622  DF  .~.~.~.~ Tone synthesis or timbre control {3}
624.~.~.~.~.~ Modulation

DEFINITION

Classification: 84/624

Modulation:

(under subclass 622) Subject matter wherein tones are synthesized or modified by varying a carrier wave in accordance with a modulation wave.

SEE OR SEARCH CLASS

332, Modulators,

16+, for phase or frequency modulation; subclasses 31+ for amplitude modulation.

360, Dynamic Magnetic Information Storage or Retrieval,

29, 30 for the frequency modulation of stored data.