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My colleagues and I are arguing about how to smooth a damped wave signal.

This signal is corrupted by white noise of a steady magnitude.

However the signal damps out as it goes along. So, the SNR and the noise as a standard dev of the signal range, both decrease.

My colleagues say I can denoise it the same the entire time, because the magnitude of the noise is the same. I say I have to adapt, because the SNR is the guiding factor.

Who's right?

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  • $\begingroup$ What is the method of denoising ? are you planning to use SNR based filtering(ex. Weiner). $\endgroup$ – arpit jain Sep 8 '16 at 13:20
  • $\begingroup$ Complex dual tree wavelets with group sparse thresholding $\endgroup$ – barnhillec Sep 8 '16 at 13:47
  • $\begingroup$ When your noise has steady magnitude while your signal damps, how come you are saying your SNR increases? $\endgroup$ – MimSaad Sep 11 '16 at 15:37
  • $\begingroup$ Edited to change to decrease. Thank you for catching the error. $\endgroup$ – barnhillec Sep 12 '16 at 8:23
  • $\begingroup$ Are you using a model of the signal? $\endgroup$ – Arnfinn Sep 13 '16 at 11:20

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