Wave shapes transition triggered with midi, plus envelope

DSP related issues, mathematics, processing and techniques
tester
Posts: 1786
Joined: Wed Jan 18, 2012 10:52 pm
Location: Poland, internet

Re: Wave shapes transition triggered with midi, plus envelop

Post by tester »

A little bit unusual question, related to certain practical topic. Morphing too, but for different purpose.

Is there a way to load "on-the-fly" new shapes to wavetable oscillator? I noticed, that standard wavetable creator - produces a large glitch in sound output. I see, that the wavetable creator - makes 128 variations of an input shape, and i guess that this is related to antialiasing and smoothing the wave. Does it have to be 128 parts in mem for sine wave?

What I'd like to do - is to achieve non-poly (standard stream) wavetable oscillator, that would emulate multiple sine units. While using multiple sine oscillators takes a lot CPU, one such wavetable oscillator could just have a shape, that corresponds to a predefined (static) mixtures of let say - 10-16 sine waves. Sine sub-units manipulations could be done then in the green when needed (frequencies, phases), and single oscillator would receive a multisine-pack definition, without a glitch.

Then instead of making 200 oscillators I would have only 20 of them.

Is this doable and how? This one?
http://synthmaker.co.uk/forum/viewtopic ... 079#p91065
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