Iam using acoustic waves to measure the thickness of material. My problem is that the acoustical lense produces static echos in the signal. I try to seperate both because there is a short interference between both.
The frequency of the material echo and the static echo has neary the same frequency. So spectral subtraction is not a valid method to sperate the signals.
I will try the following: The first measurement is without any object. So iam able to measure the static echo of the acoustic system. The second mesurement i collect the signal with the object to measure.
My idea: So i got two signals from different signal sources. Maybe i can seperate both with Independet Component ANylysis (ICA).
Do you think that this solution will work? Or is there a better method to seperate static and echo signals (with noise) out the measured data.
Thanks for your help.