Sections of damage which are too long to be repaired by
interpolation can sometimes be effectively dealt with by
substituting a new section of waveform constructed from
an analysis of the portions of waveform before and after
the section. This is known as "spectral replacement", and
can work well for sections up to a few thousand samples long.
Spectral Replacement works by performing a Fast Fourier Transform
on the sections of waveform immediately before and after
the damaged section, and building a replacement section
from the average of those two sections.
Example Screen Shots