allows one to speed/slow audio without altering its pitch
It speeds up or slows down audio, without pitch alteration. WSOLA operates
using the Waveform Similarity overlap add method [1].
[1] @InProceedings{Verhelst:1993,
author = {Verhelst, W. and Roelands, M.},
title = {An overlap-add technique based on waveform similarity
(WSOLA) for high quality time-scale modification of speech},
booktitle = {IEEE International Conference on Acoustics, Speech, and
Signal Pr ocessing},
pages = {554-557},
year = {1993},
volume = {2},
month = {April} }
.
