Tue Jan 26 18:15:18 CET 2010

WSOLA - Waveform Similarity OverLap Add.

Gist: An extension of the OLA time stretching algorithm where source
frames are taken from a neighbourhood around the point a normal OLA
would pick the frame.  The offset is taken such that the overlapped
part has maximal correlation.

[1] http://etros1.vub.ac.be/Research/DSSP/Publications/int_conf/ICASSP-1993.pdf
[2] http://music.columbia.edu/pipermail/music-dsp/2001-December/046763.html
[3] http://mffmtimescale.sourceforge.net/
[4] http://diuf.unifr.ch/pai/people/juillera/PitchTech/Preview.html