"SIGFRED: a low-power DTMF and signaling frequency detector."

Rolf Becker, Jaap Mulder (1991)

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DOI: 10.1109/4.92023

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type: Journal Article

metadata version: 2025-02-26

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Rolf Becker, Jaap Mulder:
SIGFRED: a low-power DTMF and signaling frequency detector. IEEE J. Solid State Circuits 26(7): 1027-1037 (1991)

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