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Re: query about function output
Posted:
Dec 24, 2013 10:21 AM


"Dhanashree " <dhanurane17@gmail.com> wrote in message news:l9bb9t$kbi$1@newscl01ah.mathworks.com... > y=abs(x_fft(1:M/2,:)); > imagesc(t,f,dB(y)) > > imagesc gives me the spectrogram.that is i have used that function to plot > the spectrogram.y is giving the magnitude of the fft calculated.In the > above function what does dB(y) do? when i use only y i get complete ble > coloured spectrogram.plz help. >
dB is either a function that you have or a variable you haven't shown us yet. It looks like it's meant to be a decibel calculation, but without the code, hard to say...
 Loren
http://blogs.mathworks.com/loren



