US PATENT SUBCLASS 84 / 699-- .~.~.~.~ Filtering

US PATENT SUBCLASS 84 / 699
.~.~.~.~ Filtering

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}
692	DF	.~.~.~ Tone synthesis or timbre control {4}
699		.~.~.~.~ Filtering {1}
700	DF	.~.~.~.~.~> Variable

DEFINITION

Classification: 84/699

Filtering:

(under subclass 692) Subject matter wherein a desired waveform is obtained by removing one or more partials or harmonics.

SEE OR SEARCH THIS CLASS, SUBCLASS:

661, for filtering with digital combinational circuit.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnecting Systems,

105, for harmonic filter or neutralizer.

333, Wave Transmission Lines and Networks, 167, for frequency domain filters using lumped parameters; subclass 186 for electromechanical type filters.