WaveDraw Oscillator

Tim Kleinert

I'm in building block mood today. Smile

This one uses the control-sequencer to represent a waveform as 16 linearly interpolated points, enabling you to draw a waveform of choice.

The circuit is 100% aliasing-free (as you can hear from the demonstration triangle wave). It sacrifices accurate tuning for for this, but is still usable.

Idea

Assign a morph group to all the sequencer sliders with different ranges each, to seamlessly morph from one waveshape to another. Cool

WaveDrawOsc TK.pch2

Description:

draw your own waveshape

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WaveDrawOsc TK.pch2

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Vel-Ryphon · Joined: Apr 05, 2008 Posts: 3 Location: France - Bordeaux

Hi,

I'm a beginner with the Nord Modular G2, could you help me understand the purpose of the blocks you used in this patch ?

I really thank you.

Wout Blommers · Posted: Sat Apr 05, 2008 2:36 am Post subject:

Vel-Ryphon

I'm not going to explain the complete Patch; only some suggestions how to start an investigation...

At first use the Manual or even more handy, use the Help file in the Editor. All Module Inputs and Outputs are described.

Then take a look at the OscMaster1 and try to figure out what's coming out of its Output. It isn't a 'sound like' signal, but a value derived from the Keyboard. What's happening at the Lever Scaler Module (double click on the body of the Module to find its name) and read the Help file. How does it effects the incoming values? What will the Mixer do to the signal? When will the Compare Module meets its value to send a Logic signal? And last but surely not least, what will the Value Switch do and when to make the Sequencer Module move to the next step? (Why does the Switch only use one Output and what are the consequenses for the next Module in line when it's switch to 'on'?) Also the X-Fade 100% setting is important.

At the end you'll find out this Patch just generates a triangle wave form Smile

Only, you'll have 16 different points to create another wave form...

At last change some parameters and listen what happens and try to find out 'why' it happens.

IMHO it's the only way to study the Nord Modular Smile

Wout

Tim Kleinert · Posted: Sat Apr 05, 2008 3:36 am Post subject:

All this hassle just for a triangle wave Embarassed

...

Wout Blommers · Posted: Sat Apr 05, 2008 6:33 am Post subject:

Yes!

It's worst: in a way analysing a rather small Patch as this one is also crawling into your head, because you told the story first Very Happy

I see a Nord Modular Patch as a story. The Modules are the sentences where the parameters and the In and Outputs are the single words. Indeed, it's a language in which things like using a Module in another way it would be used normally, it's the same as creative use of words. Some month ago I analysed the Classic Patch 'Wind Up Toy' by Keith Crosley, a famous story Smile

Wout

torsig1967

Tim Kleinert

peterkadar · Posted: Sun Jan 11, 2009 11:58 pm Post subject:

I think this is really cool. I'll be expanding on this and posting shortly.

Thanks a ton,

Peter K.

peterkadar · Posted: Mon Jan 12, 2009 3:47 am Post subject:

Hi Tim,

so I made a basic synth using two of your wavedraw oscs. I included a filter, sub osc, and a noise source. What I'm trying to do now is find a way to a) automate the waveform readout with a sequencer or b) automate the random parameter for wavesequencing type effects. I couldn't get the first thing going, and the only way I can get the wavesequencing thing going is by tapping buttons 7&8 under parameter page A3. I assigned Waveform Random in the 2nd osc to CC16. Now if I can only get a sequencer or something to turn that parameter on and off I could have automated wave sequencing without tapping those damn buttons.... Can you help me out?

WavedrawSyn.pch2

Description:

Press buttons 7&8 under page A3 for wavesequencing. Still working on how to automate it...

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WavedrawSyn.pch2

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torsig1967