SynthMaker

More on oscilators

Archive · 2005 2 old posts

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

unkargherth ·

Well, after this post, we have a good one to start. Thinking in it, here come my thougts

We have a nice, phase mod'able sine osc. Feedding something like 0.5*out on it's phase in, we have a nice, 2*freq saw wave. Getting two of this out of phase, we could get a PWM square one. Triangle seems out of the clean things to do by now

Also, adding at end some of the already posted saturators, we have a good family of waves to start at a good CPU cost

The only thing we need is to be able to oversample it, cause some of processes ( specially Self feedback and PM) then to generate lot's of artifacts at high frequencies

Anybody ( calling for stefancrs here) has an idea on how to oversample our "comunity Osc?

An this takes me to another question. It is /will be posible to oversample the whole schematic ( setting Samplerate ie: 4 times higher) and then undersample and filter in last step? This would be a big step in quality of resulting VST's

stefan ·

You can do oversampling internally within one single code module, so if you do for instance distortion, self-feedback and the likes within the module, you can oversample it using internal lowpass filters and the loop command. But I agree with you, there should be a way to make something run at multiples of the sample rate, within the schematic. Me and jorge has been discussing this and most likely we will find a good solution for it. It may seem trivial at first, but there are a few issues to solve. Like the "semantics" behind the conversions, keeping the oversampled parts isolated and so forth.

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