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
2011-11-18
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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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2011-11-17
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