US PATENT SUBCLASS 84 / 678
.~.~.~ Selecting circuits

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
600  DF  .~ Electrical musical tone generation {5}
671  DF  .~.~ Electric analog oscillators {9}
678.~.~.~ Selecting circuits {9}
679  DF  .~.~.~.~> With transistor
680  DF  .~.~.~.~> With space discharging means
681  DF  .~.~.~.~> Fundamental tone detection or extraction
682  DF  .~.~.~.~> Multiplexing or scanning
683  DF  .~.~.~.~> Noise reduction (e.g., error prevention)
684  DF  .~.~.~.~> Priority or preference circuits
685  DF  .~.~.~.~> Transposition
686  DF  .~.~.~.~> Stops
687  DF  .~.~.~.~> Force or velocity responsive {3}

DEFINITION

Classification: 84/678

Selecting circuits:

(under subclass 671) Subject matter including a circuit which selects a musical parameter, e.g., pitch or timbre.

SEE OR SEARCH THIS CLASS, SUBCLASS:

615, for selecting circuit with digital storage.

653, for selecting circuits with digital combinational circuit.