Defining variables to comput the ISNR

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Daniel_DG 2015-5-25

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评论： Daniel_DG 2015-5-25

Hi,

I have to modify a script so that it automatically computes the ISNR. I learned that the formula for computing the ISNR is ISRN=10*log10(num/den). However, I don't know how to define "num" and "den".

num = sum of all the terms of the squared difference between original and noisy

den = sum of all the terms of the squared difference between original and restored

Can someone help me with this?

Regards,

Daniel

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回答（1 个）

Walter Roberson 2015-5-25

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sum((double(original(:)) - double(noisy(:))).^2)

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Daniel_DG 2015-5-25

Thanks!

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