How to find the correct coefficients from matlab dct?

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Hassan Bhatti 2019-3-28

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评论： Matt J 2019-3-28

Hi,

I have performed a DCT on a signal and I want to create the original signal back by using the fourier co-efficients which I will get from DCT. But, I don't know how to do the correct normalization of the co-efficients.

Does someone know about it?

Thanks!

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Matt J 2019-3-28

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If I assume you used dct to go forward, you should just be able to use idct to go back.

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Hassan Bhatti 2019-3-28

I have already tested FFT by getting the co-efficients out and putting it the fourier series back to get the original one. So, the same logic should be applicable for dct as well.

I have the co-efficients but just want to know how they are normalized?