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Morphing Wave Forms

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Morphing Wave Forms

Postby martinvicanek » Tue Nov 21, 2017 9:33 am

Hi gang,
here is a little excersise on morphing wave forms.
MorphOsc.png (42.63 KiB) Viewed 4230 times

Note that morphing is different from simple crossfading.
The tricky thing is to get rid of (most of the) aliasing introduced by the waveform discontinuities. Here I used a technique called (first order) DPW.
The schematic contains six oscillators each of which allows morphing between two of four waveforms (sine, triangle, square, and sawtooth). If you just want the bare osc without the wave display you can go inside and grab the corresponding module. The morph input is poly type hence can be used for modulation.

Have fun!
fixed frequency hopping
(54.38 KiB) Downloaded 186 times
Last edited by martinvicanek on Wed Nov 22, 2017 4:43 am, edited 1 time in total.
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Re: Morphing Wave Forms

Postby Spogg » Tue Nov 21, 2017 2:53 pm


If only I could understand the magic trick!

The sine-saw one sounds potentially very useful for imitative synthesis, especially brass, and they all sound very clean across the range. Amazing!

Thanks for that :D

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Re: Morphing Wave Forms

Postby adamszabo » Tue Nov 21, 2017 10:54 pm

Very nice! Although when I add a frequency control for the osc pitch, even with a dezipper they seem to jump instead of going smooth. Maybe I am doing something wrong?
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Re: Morphing Wave Forms

Postby FlowStoner » Wed Nov 22, 2017 12:53 am

DPW is not famous for intesive modulation stability. :o
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Re: Morphing Wave Forms

Postby martinvicanek » Wed Nov 22, 2017 4:55 am

Thanks for spotting the bug, Adam! :oops: Now fixed and replaced in the original post.

FlowStoner wrote:DPW is not famous for intesive modulation stability. :o
True, especially for higher orders. I chose first order as a compromise between (hopefully) acceptable alias suppression and modulation capability. If in doubt, try it out for your specific use case! ;)
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Re: Morphing Wave Forms

Postby Loopeytunes » Fri Nov 24, 2017 8:45 pm

These are nice!

I'll have a look through these to try and get a better understanding of how it is you did this magic!

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