speech and cough deduction
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I have a coughed speech signal.I want to detect the region of speech and cough by marking 1 as speech portion and 0 as cough portion. Please guide me.
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Ajay Kumar
le 18 Nov 2011
This is more complicated then you think it is.
However, the easiest solution is to find the FFT of the signal and see the power content in each frequency band. I am guessing that cough would have high energy in the lower frequencies.
Now you can setup a threshold level and flag 1 if it is above the threshold. To be more accurate have your window size in time domain set to a small value.
Another important property of speech is that, it has harmonics. So try to Identify the fundamental frequency, compute the higher harmonics and use a look up table.
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