| 984 / | HD | MUSICAL INSTRUMENTS |
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| 300 | DD | ELECTRONIC MUSICAL INSTRUMENTS {structural combinations of microphones, pick-ups, or amplifiers with musical instruments subclasses 1+, 50+, and 100+; Instruments in which each note is generated by a different individually-actuated mechanical resonating structure and is amplified electrically subclasses 50+; Instruments in which each note is produced by a different electrically-vibrated sounding element subclasses 100+; Electronic circuits in general H03. {G10H} {4} |
| 301 | DD | .~ Details of electrophonic musical instruments {keyboards applicable also to other musical instruments subclasses 1+ and 50+} {G10H 1/00} {9} |
| 309 | DD | .~.~ Means for controlling the tone frequencies, e.g., attack, decay, etc.; Means for producing special musical effects, e.g., vibrato, glissado {for instruments using voltage controlled oscillators and amplifiers or voltage controlled oscillations and filters, etc., see subclass 381} {G10H 1/02} {2} |
| 324 |  | .~.~.~ Circuits for establishing the harmonic content of tones; other arrangements for changing the tone color {G10H 1/06} {4} |
| 325 | DD | .~.~.~.~> By combining tones {subclasses 325 and 326 take precedence} {chord subclass 347; Analysis or synthesis of sound waves, per se, G10L} {G10H 1/08} {1} |
| 327 | DD | .~.~.~.~> By filtering complex wave forms {G10H 1/12} |
| 328 | DD | .~.~.~.~> During execution {modulation during execution {subclass 315; Voice controlled instruments subclass 388} {G10H 1/14} |
| 329 | DD | .~.~.~.~> By nonliner elements (generation of nonsinusosidal basic tones subclass 394) {G10H 1/16} |