Because the o stands for overlap.
https://ieeexplore.ieee.org/document/319366. I'm not specifically familiar
with wsola, but if it's like the other overlap-add techniques then starting
with some overlap and modifying that relationship is the fundamental way to
change the sound.
Wikipedia has a decent article on pitch timescale modifications.
Post by Alex Dashevski
Could you explain why we need an overlap parameter in the WSOLA ? How can
I find optimal values ? What effect will I get if I use bigger or smaller
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