[music-dsp] Phase vocoder

2019-02-28 Thread Alex Dashevski
Hi, I'm trying to understand how the Phase Vocoder works. My question is: Why the problem is just in phase on overlapping. What about amplitude/magnitude ? I'm not sure if I understood a main idea of the phase propagation. I read a lot of reports about this algorithm. Some reports describe in two

Re: [music-dsp] Phase vocoder

2019-02-28 Thread Davide Busacca
Hi Alex, a phase vocoder changes the duration of a signal by modifying its STFT representation. To avoid artefacts due to sinusoidal component discontinuity introduced by the modification is required to modify the phase. Think of an STFT as a 2D matrix (time/frequency) containing coefficients for