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Author Topic: Shifting the phase of a wavetable  (Read 2905 times)

abject39

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Shifting the phase of a wavetable
« on: February 21, 2019, 02:36:16 AM »
Having issues with a wavetable file. I've imported a recorded triangle waveform. The phase of it isn't aligned to 0. This is what it looks like https://1drv.ms/u/s!AnhYfvhn4oMAu958vQvng0u6_quslw. I want to shift it over so that it aligns like this https://1drv.ms/u/s!AnhYfvhn4oMAu959o_frsC82NXj9tA. I tried setting the phase to 0 but that seems to set all phases of all partials to -100 (weird that it calls it 0 but no big deal). I tried using the rotation function but it isn't completely precise. Is there a precise way to shift the waveform so that the zero crossing point aligns to the beginning and end of the waveform?

Markus Krause

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Re: Shifting the phase of a wavetable
« Reply #1 on: February 21, 2019, 07:54:41 AM »
The phase allignment of the partials from a triangle is not 0. It is 90 degrees.

In the wavetable editor:

1) Phase-> Set to value 25 (=90 degrees) to set the phase allignment of the partials
2) Phase-> Rotate 25 to move the zero crossing to the start

abject39

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Re: Shifting the phase of a wavetable
« Reply #2 on: February 21, 2019, 07:57:40 AM »
Worked like a charm! I see I have quite a bit to learn to get this fully understood. Is an updated manual coming that explains this more? Current options like rotate aren't in it at all.