Audio Restoration
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Audio Restoration using DSP

I am interested in the restoration of audio signals which are degraded by
  • Impulsive noise often referred as clicks or ticks
  • Broadband noise often referred as hiss or background noise
Here is how Auto-regressive or all-pole model is defined.

 Here is a schematic diagram for removal of `clicks' based on Auto-regressive (AR) model.

 Here is a schematic diagram for hiss removal based on spectrum subtraction.


Here is examples of corrupted and restored tracks

Here is a comparison of the declicking results using different order.

 An expample of using spectrum subtraction for de-hissing.