Electronic organ with vibrato produced by frequency generator - has control signal produced by envelope modulator which forms decaying amplitude curve for selected tones
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Electronic organ loudness correction circuit - varies loudness over each octave to avoid jumps between octaves using capacitor and resistor
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Electronic organ tone generator - uses integrated signal generator circuit and key contacts
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Rhythm production unit of electronic design - has storage capacitor on oscillator input with cut-in switch
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Electronic rhythm production device - is fitted with programmable selector switches with augmentation circuit and uses impulse generator
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Automatic accompaniment for electronic organ - with rhythmic series of tones or chords provided on depression of single key
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Tone variation means for electronic musical instruments - using tone fuilters selectively connected in circuit
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Tempo display for electronic rhythm device - has impulse generator producing optical displayed signal indicating start of rhythm pulse
