find SNR of a noisy signal.
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i have a noisy signal,can i just use this signal to calculate the snr?if so could somebody tell me what i should do?Thanks in advance
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Image Analyst
am 30 Sep. 2013
You need to find the noise, and the signal. You can estimate them if you want, but to get the ratio you need each of them separately.
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Image Analyst
am 1 Okt. 2013
You can use conv() to smooth your signal with a box filter. But if you don't know your true signal then you won't know how much to smooth it. I guess you could just eyeball it and go with whatever you think looks good.
smoothedSignal = conv(noisySignal, ones(1, windowWidth)/windowWidth, 'same');
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