Goertzel algorithm is the core of DTMF signal detection. It uses the two-pole IIR filter to calculate the discrete Fourier transform value, and extracts the spectrum of input signal quickly and effectively.

Filename	Size	Update
ReadME.txt	818	2004-05-19
GUI.fig	50992	2004-05-19
goertzel_algo.m	1079	2004-05-19
gui.m	23899	2004-05-19
Ogenerator.m	2280	2004-05-19
rcal_k.m	1058	2004-05-19
Rcdecoder.m	1937	2004-05-19
StringNum.m	928	2004-05-19

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