from lecture 10 we had, - lthwarden.eit.lth.se/files/lectures/lecture11_slides.pdf4 how can we use...
Post on 19-Jul-2018
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From lecture 10 we had,
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How can we use DFT and IDFT to perform the linear filtering operation for an infinite length input signal?
Answer: By using the Overlap-Add method
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L=4, M=4
>> conv([1 0 1 1 1 0 1 0 0 1 0 1],[1 1 0 0])
ans = 1 1 1 2 2 1 1 1 0 1 1 1 1 0 0
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>> ifft(fft([1 0 1 1],7).*fft([1 1 0 0],7))
ans =
1.0000 1.0000 1.0000 2.0000 1.0000 -0.0000 0.0000
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An acoustic recording of the word “mama”
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Ex: Scalogram using Wavelets (from Matlab)
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