Shifting of the frequency spectrum of an audio signal is a powerful technique for modifying the qualities of musical sounds. The subject design brings frequency shifter (-Klangumwandler-) technology up to current professional audio standards. Performance specifications include 70-dB dynamic range, 40-dB rejection of unwanted sidebands, amount of frequency shift continuously variable through as much as -5000 to +5000 Hz, simultaneous availability of positively and negatively shifted signals, and variable threshold squelch.

Authors: Bode, Harald; Moog, Robert
Affiliation: Moog Music, Inc., Williamsville, NY
JAES Volume 20 Issue 6 pp. 453-458; August 1972
Publication Date: August 1, 1972

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