Denoising of Signals and Images using Wavelet Packet Transform (With code)

[@04_bhavyasri21]

Sir, by using the " awgn" command if i'm adding guassian noises to signal and tried to find SNR of that noisesignal, it is showing different values when i'm running. is there any command that can add same guassian noise for every run??

[@exploringtechnologies9]

Each time it generates random values. However with help of RNG key initialization, u can generate same random sequence. Or u genereate a random sequence and store in a variable.

[@surajkumar-zz7cu]

Thanks

[@personals9316]

Here in this WP de-nioising technique, the signal was resolved into 4 levels. So it must have 4 approximated coefficient values and 4 detailed coefficient values. Why we are only focusing on level 1 detailed coefficients for threshold, why not remaining???
Please explain.

[@exploringtechnologies9]

Noise estimation is done on the basis of 1st level detailed coefficients as they contain largest noise. For more details, please read papers of noise estimation.

[@ChandanTutorial20]

Can you provide the code, sir?

[@exploringtechnologies9]

Code is in video. Pause the screen take snapshot and get printouts.