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An integrated dual-tone multi-frequency decoder

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2 Author(s)
Callahan, M., Jr. ; MOSTEK Corp., Carrollton, TX, USA ; Davis, H.

A CMOS IC that performs the previously costly task of decoding all eight standard tone dialing signals will be discussed. Algorithms provide speech rejection, while requiring a minimal number of inexpensive external components.

Published in:

Solid-State Circuits Conference. Digest of Technical Papers. 1978 IEEE International  (Volume:XXI )

Date of Conference:

15-17 Feb. 1978