1976-04-23
1977-11-01
Schaefer, Robert K.
Music
Instruments
84445, G10H 100
Patent
active
040560325
ABSTRACT:
A pitch changing apparatus shifts the absolute pitch of musical output from an electronic organ. The apparatus combines two or more transposing switches in a cascade arrangement. In the preferred embodiment, the apparatus comprises four binary transposing switches in cascade relationship, with frequency divider circuits interposed between successive transposing switches. The preferred embodiment selects one out of twelve absolute pitches for the musical output in steps of one semitone. Other embodiments select absolute pitch in steps of two or three semitones. The other embodiments use arrays of electronic switching elements included in integrated circuit packages.
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Miska Vit W.
Schaefer Robert K.
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