Abstract: Dual-tone multi-frequency (DTMF) is a signaling standard in telecom applications that produces two tones simultaneously for each key press. The DTMF tones are chosen such that decoding the ...

C# implementation of the Goertzel algorithm for DTMF tone (a.k.a. Touch-Tone) detection and localization in audio data. Includes wrappers and extensions for NAudio.

The algorithm is used for detecting if specific frequencies are present audio. It has been most commonly used to detect DTMF(aka Touch-tone) in telephony, but it can ...

Abstract: This paper discusses the FPGA implementation of modified Goertzel Algorithm for the application of DTMF signal detection, which is as effective as that of normal Goertzel Algorithm yet is ...

A short demo program Kevin Banks wrote to enable you to test-drive the Goertzel algorithm. This is Listing 1 in Kevin Banks' “The Goertzel Algorithm,” first printed in September 2002 issue of Embedded ...