US PATENT SUBCLASS 84 / 616
.~.~.~.~.~ Fundamental tone detection or extraction

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}
615  DF  .~.~.~.~ Selecting circuits {5}
616.~.~.~.~.~ Fundamental tone detection or extraction

DEFINITION

Classification: 84/616

Fundamental tone detection or extraction:

(under subclass 615) Subject matter wherein the fundamental or pitch is detected and used to activate or modify a musical system.