Description: 984 musical instruments / 984 musical instruments/(300) 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} (301) details of electrophonic musical instruments {keyboards applicable also to other musical instruments subclasses 1+ and 50+} {g10h 1/00} (330) selecting circuits {g10h 1/18} (331) suppresion of switching-noise {g10h 1/18b}
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