| 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 |  | .~ Details of electrophonic musical instruments {keyboards applicable also to other musical instruments subclasses 1+ and 50+} {G10H 1/00} {9} |
| 302 | DD | .~.~> Associated control or indicating means {teaching of music, per se, {G09B 15/00} {G10H 1/00M} |
| 303 | DD | .~.~> Recording/reproducing or transmission of music for electrophonic musical instruments {G10H 1/00R} {1} |
| 308 | DD | .~.~> Means for obtaining special acoustic effects {combined with modulation subclasses 311+} {G10H 1/00S} |
| 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} |
| 330 | DD | .~.~> Selecting circuits {G10H 1/18} {7} |
| 344 | DD | .~.~> Constructional details {G10H 1/32} {1} |
| 347 | DD | .~.~> Accompaniment arrangements {G10H 1/36} {2} |
| 353 | DD | .~.~> Tuning means {G10H 1/44} |
| 354 | DD | .~.~> Volume control {G10H 1/46} |