continuous wavelet transform- modify and reconstruct

Hi,

I want to use CWT to modify the amplitude of signal in frequency domain (in a specific frequency band) and then reconstruct the signal. I want to do it by changing the wavelet coefficients at that band. Is that the right way?

Thanks in advance for your help.

Best,

Behrang

Answer 1

[Binaya]

Hi Behrang

Yes, changing the coefficients of the wavelets is the right way for modifying the a signal.

You can follow the below detailed steps to modify the signal:

1. Use "cwt" function to calculate the continuous wavelet transform of the required signal: https://www.mathworks.com/help/wavelet/ref/cwt.html
2. Modify the coefficients of the frequencies or wavelets as per your need.
3. Use "icwt" function to reconstruct the signal by using inverse continuous wavelet transform: https://www.mathworks.com/help/wavelet/ref/icwt.html