Comparing different signals

[soft001]

Hello,

I wanted to know if there are some methods, other than the correlation, for comparing different signals.

Thank you for your support

 

[milind.a.kulkarni]

Yes you can have average energy level , statical parameters like entropy , mean standard deviation or even frequency domain techniques like ratio of amplitude contributation from low and high frequency component etc. as some of the method of comparision

 

[soft001]

thank you for your answer, but can you explain more a bit. or give me some reference. just for the the entropy , mean and standard deviation are less robust than correlation ?
they are robust technique or what ?

 

[milind.a.kulkarni]

there is one more robust technique that can be extended for signal comparison called as "Scale-invariant_feature_transform"

refer -

https://en.wikipedia.org/wiki/Scale-invariant_feature_transform

Good Luck