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Karplus-Strong generator for SunVox

Posted: Fri Mar 23, 2012 11:20 pm
by Diomas
Is it planned for future versions?

Re: Karplus-Strong generator for SunVox

Posted: Sun Mar 25, 2012 12:24 pm
by NightRadio
Yes

Re: Karplus-Strong generator for SunVox

Posted: Wed Oct 26, 2016 3:36 pm
by cube48
Here is a quck and dirty Karplus Strong experiment. Putting into use the recent additon of Pitch2Ctl module.
KarplusStrongExperiment01.PNG
KarplusStrongExperiment01.PNG (7.21 KiB) Viewed 2887 times
Just play the INPUT module. Unfortunatelly with the 256 Hz limit in the delay module (TunedDelay) it's playable practically only between C4 and C5. Lower notes still get tuned but not sounding like a string anymore. Notes above C5 are stuck at 256 Hz. Change the brightness of the sound either with the filter of the NoiseGen or the Transpose parameter of the TrigNoise.

Edit: this example is roughly transposed by one octave. Normaly it's the C4 which has frequency of 261.63 Hz.

Does anybody have a clue how to get shorter/faster delay than 256 Hz? That way we could have higher octaves. I know it's possible to tune it higher in ms but for more precised tunig we would need fractions of ms and the whole math would be more complicated.
It's possible to put the Pitch Shifter at the end of the chain though but it doesn't sound too well.

Re: Karplus-Strong generator for SunVox

Posted: Sat Oct 29, 2016 8:28 pm
by NightRadio
Unfortunatelly with the 256 Hz limit in the delay module (TunedDelay) it's playable practically only between C4 and C5
I will increase this limit! :)

Re: Karplus-Strong generator for SunVox

Posted: Sat Oct 29, 2016 11:59 pm
by cube48
Wow, it's gonna be fun! (not that it isn't already) Thanks!

Re: Karplus-Strong generator for SunVox

Posted: Tue Nov 01, 2016 8:14 pm
by NightRadio
Seems it is not enough to just increase the limit of the Frequency parameter...
We can now create some simple Echo-based Karplus-Strong generator. But if we want to add the filter to the feedback circuit - we need some another solution, different from the current Feedback module. Feedback have the internal delay of 20 ms - so we only can get 50 Hz frequencies and lower. Not higher.

Re: Karplus-Strong generator for SunVox

Posted: Fri Nov 04, 2016 3:45 am
by AJHunter
NightRadio wrote:Feedback have the internal delay of 20 ms - so we only can get 50 Hz frequencies and lower. Not higher.
perhaps a delay slider on the feedback modules, if that's possible?

Re: Karplus-Strong generator for SunVox

Posted: Tue Dec 12, 2017 2:36 pm
by cube48
Just for posterity, there's KaStro now with improved implementation of Karplus-Strong concept :wink: