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A Digital "Phase Shifter" for Musical Applications, Using the Bell Labs (Alles-Fischer) Digital Filter Module

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A programmable digital filter bank is configured to simulate a swept analog "phase shifter." The operation of the Bell Labs digital filter module and its use in simulating the swept filter response are described. Analog and digital models for phase shifters are compared, and directions for further development are indicated.

JAES Volume 27 Issue 9 pp. 673-676; September 1979
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AES - Audio Engineering Society