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How to calculate SNR with FFT?

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royayeboodan

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I want to calculate SNR for sigma-delta modulator.I know that i will require to calculating FFT but I don't know that how I can calculate SNR with FFT.:cry:
thank you
 

Re: SNR with FFT?????

I think if the noise is White, the effect of it became a DC (flat) spectrum in all band, while the spectrum of essential signal is not in overall of spectrum and is band limited.
 

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