ELECTROPHONIC MUSICAL INSTRUMENTS (electronic circuits in general H 03)
Note
This subclass covers musical instruments in which individual notes are constituted as electric oscillations under the control of a performer and the oscillations are converted to sound-vibrations by a loud-speaker or equivalent instrument.
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Details of electrophonic musical instruments (keyboards applicable also to other musical instruments G 10 B,
G 10 C; arrangements for producing a reverberation or echo sound G 10 K 15/08) [5]
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Means for controlling the tone frequencies, e.g. attack, decay; Means for producing special musical effects, e.g. vibrato, glissando
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by additional modulation
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043
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Continuous modulation [3]
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by electromechanical means [3]
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by acousto-mechanical means, e.g. rotating speakers or sound deflectors [3]
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053
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during execution only [3]
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055
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by switches with variable impedance elements [3]
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057
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by envelope-forming circuits [3]
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Circuits for establishing the harmonic content of tones
during execution (modulation during execution G 10 H 1/053) [3]
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by non-linear elements (G 10 H 1/14 takes precedence; generation of non-sinusoidal basic tones G 10 H 5/10) [3]
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Selecting circuits [3]
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for transposition [3]
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for suppressing tones; Preference networks [3]
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for selecting plural preset register stops [3]
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for automatically producing a series of tones [3]
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to produce arpeggios [3]
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to reiteratively sound two tones [3]
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Constructional details [3]
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Switch arrangements, e.g. keyboards or mechanical switches peculiar to electrophonic musical instruments (keyboards applicable also to other musical instruments G 10 B, G 10 C) [3]
