Waveform modification.

I want to experiment with making a small change to the standard saw waveform.

What I want to do is basically slightly soften the triangle point at the top/bottom of the saw wave, but when I run it through a saturation module it lifts up the diagonal line, then with extreme saturation turns it into a square, I want it to be more 'sine like'.

Any pointers?

 

f.i.use a filter (see example in manual for saw).

 

What about slight morph between saw and sine waveforms? But if you want to modify saw wave in described way, yes, use a filter.

 

Thanks guys. But now I want to make a feedback osc a bit like on the jp8080.

I setup a feedback loop with a unit delay but whenever I went above 1 for the mixer level it would reach inifinte volume and I have to sitch reactor off then on.

 

for feedback ways you must be shure to always multiply the back feeded signal with values smaller than 1 (so it gets a litte smaller). Thats how it is done in delays...

But I do not know, how to set up an feedbak oscillator in that way....

 

Ahh... less than 1, right. Thanks, I didn't know that.

 

Does anyone know how Roland's feedback oscillator works? Is it... a kind of karplus-strong synthesis thing? Tuned delays? If so... what's the initial (pre-feedback) signal?

 

You might check this thread out:
http://www.native-instruments.com/forum/showthread.php?t=27896&highlight=feedback+oscillator

Currently I am implementing feedback oscillators in an FM synth and encountered yet 2 difficulties:
- Hi pass the feedback path to remove DC component - solved
- I checked a sample of the JP feedback Osc and the waves stay steady between x and -x, while in my model the amplitude differs. Anyone an idea?