SynthMaker

Morph-Osc experiment

Archive · 2008 7 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

NekroDisko ·

Hello everyone! I have been working with the Draw-morph oscillator for some weeks now and have come up with some goodies. This one I started with yesterday, and it is a wierd little wavetable-thing. I also would like some help or advice on some things.

It works like this: A knob morphs between Sine,Triangle,something between Triangle and Square (I stumbled upon this by mistake),Square and Sawtooth. Both Phaze and PWM can be modulated by knobs and/or the LFO (with visual display).

The main reason I started working with this is I wanted to morph between the waveforms, using only a knob, and have the opportunity to use PWM in a wavetable-osc.

Now to my small problems: The Oscillator wouldnt allow the LFO to work at first, unless the LFO was connected to the Poly-stream (!?) so I found a workaround by inserting a math component which doesnt compute anything. Never had this problem before... Also I think the sound is quite bad (it sounds crackly and rough in a bad way), but this might be that my approach is not the best solution. Interpolation issues? De-normals? How do I solve it?

Anyway, I have made a very small one-osc synth out of it, just for your testing pleasure. Feel free to use anything inside as you like.

Here it is: http://www.box.net/shared/mxcbsfpezh Cheerio!

RunBeerRun2 ·

Sounds cool and fat, I just bought sm and only made guitar effects so far.

But poking around your osm looks interesting. Some of it I understand.

infuzion ·

NekroDisko wrote: Also I think the sound is quite bad (it sounds crackly and rough in a bad way), but this might be that my approach is not the best solution. Interpolation issues? De-normals? How do I solve it?

Seems the OSC is outputting outside the range of [-1..+1], might want to look at that.

Also, for some reason, the LFO output-target dropdown is not selectable from the front panel for some reason, but is if you drilll down into the module.

philter5 ·

thx for sharing, just downloaded your osm. 🙂

NekroDisko ·

Ok, now I think the flaws should work as expected. Fixed the drop-down menu issue and put in a fix after the oscillator. Looking at the wave now in a scope seems to keep it in the correct range. Here you go: http://www.box.net/shared/58cql6b60f

NekroDisko ·

Yeah, well RunBeerRun2, its not really that complicated. If you want to know any details, feel free to ask me and I will try to answer. Got a fully-fledged synth in the making based on this technic, so stay tuned...

RunBeerRun2 ·

I like your synths, I might open them up at some point to get some ideas.

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