| 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} |
| 376 |  | .~ Instruments in which the tones are generated by means of electronic generators {subclass 388 takes precedence} {G10H 5/00} {6} |
| 377 | DD | .~.~> Instruments using voltage controlled oscillators and amplifiers or voltage controlled oscillators or filters, e.g., synthesizers, etc. {G10H 5/00B} |
| 378 | DD | .~.~> Voice controlled instruments {G10H 5/00C} |
| 379 | DD | .~.~> Using generation of basic tones {G10H 5/02} {3} |
| 384 | DD | .~.~> Using generation of nonsinusoidal basic tones, e.g., saw-tooth, etc. {subclass 381 takes precedence} {G10H 5/10} {1} |
| 386 | DD | .~.~> Using electromechanical resonator, e.g., quartz crystal, as frequency determining element {subclasses 379 and 383 take precedence} {G10H 5/14} |
| 387 | DD | .~.~> Using cathode ray tube {G10H 5/16} |