To Do: noise spectrum density estimation and Wiener filtering

Data

• various noise: noise1 noise2 noise3
• Barbara
• Music

To do

1. For each noise

   • Estimate the spectrum density by periodogram and Welsh method
   • Identify the color of the noise (white, pink, red…)

2. With the image Barbara

   • Simulate a noisy version of the image with various SNR (0dB, 5 dB, 10 dB, 15 dB, 20 dB), using a Gaussian white noise
   • Denoise the image using the Wiener filter

3. With the noised musics:

   • Simulate a noisy version of the music using the three noises using a global factor of $0.1$ for each noise.
   • Denoise the sound using the Oracle Wiener filter.