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Questions tagged [sola]

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2
votes
0answers
73 views

How do audiobook players manage to quickly speedup/slowdown playback speed without using more memory?

Many audiobook player apps on Android have a reading speed slider which lets us choose the reading speed e.g. 0.5x 0.75x 1.00x 1.25x 1.50x. This is time-stretching ...
1
vote
1answer
81 views

Impact of the WSOLA analysis increment on the time stretching factor

WSOLA, basically, is the same as OLA but with a dynamic hop size. That part is clear to me. What is not so clear is the following: The stretching factor is determined by alpha = Hs / Ha and WSOLA uses ...
2
votes
2answers
2k views

How does formant shifting work?

How does formant shifting in synthesizers such as Reason's Maelstrom work? I've been pointed to the PSOLA algorithm among others, but I cannot understand how exactly does it result to formant ...