Hello,
I want to do wavetable synthesis, that is, loop a
small section of audio. I don't want to hear a glitch
at each loop cycle.
Basically I want to know how hard this is to achieve.
Do I have to (manually) blend the beginning and end of
the section?
This is clearly a problem that people have thought
about--soundfonts for example are made by extracting
audio sections for looping. I just haven't seen a
definitive answer as to what needs to be done.
this is what I've tried:
-using BufRd with a phasor indexing a section of
steady tone, and with all types of interpolation. I
still hear a glitch at each loop.
-using Osc and VOsc on a short section (256 samples)
of audio. The pitch I hear is the looping freq, even
if there are say 3 (not 1) waveform cycles in the
section.
-outside of SC, estimating period of steady tone using
autocorrelation, then cutting out a section this long,
then hann windowing, and looping this. I still hear
glitches.
any freedback on what's a reasonable/necessary amount
of work and tools for doing it?
George
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