Dual-tone multi-frequency signaling

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171	PDF Document Add to Reading List Source URL: dougkerr.net Language: English - Date: 2013-07-22 19:24:27 Computer art Telephone exchange ASCII Dual-tone multi-frequency signaling Bell System Telephone Rotary dial Pulse dialing Bell Labs Telephony AT&T ASCII art
172	PDF Document Add to Reading List Source URL: focus.ti.com Language: English Electronics Broadcast engineering Dual-tone multi-frequency signaling Goertzel algorithm Signaling Telephone keypad Frequency Electronic filter Discrete Fourier transform Electronic engineering Digital signal processing Mathematical analysis
173	PDF Document Add to Reading List Source URL: focus.ti.com Language: English Digital signal processing Companies listed on the New York Stock Exchange Texas Instruments Dual-tone multi-frequency signaling Technology Digital signal processors Electronic engineering Electronics