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How to detect dialed signals dtmf

Asked by kyin gab on 30 Nov 2012

Hello,

If given Fs(sampling frequency) and t(period for each signal), How can I detect the dialed numbers in a dtmf signal using fft.

Thanks.

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kyin gab

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1 Answer

Answer by Wayne King on 30 Nov 2012

2 Comments

kyin gab on 30 Nov 2012

seen it many times. I am a beginner and honestly, MatLab did not help matters there.

Thank you.

Walter Roberson on 10 Mar 2013

It appears the above moved. One Simulink based example is now at https://www.mathworks.com/help/dsp/examples/dtmf-generator-and-receiver.html

Wayne King

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