KVR Audio

paulnasca · Post by **paulnasca** » Sun Oct 16, 2005 11:49 am

Hi.
I am Paul, the author of ZynAddSubFX software synthesizer.
I wrote a complete documentation of how the PADsynth synthesis algorithm works. It includes the full description of the algorithm: overview, text description, diagrams, pseudocode; example C/C++ implementations and a ready-to-use C++ class.

Also, I included some audio examples into the page. Please tell me your opinion about it.

I tried to make it to be easy understood and ready to be implemented and/or used into your software synthesizers. Everything (the algorithm, the examples, the implementations, diagrams,etc) from this page are released under Public Domain. You are welcome to include and use this into your programs and I invite the companies/developers who write software synthesizers to use it. Also, I guess that the sound banks producers will be very interesed about this

I don't require anything for using it

; I just want this to be spread, to be used to make beautiful sounds.

It's page is at:
http://zynaddsubfx.sourceforge.net/doc/ ... Dsynth.htm

Enjoy!

Paul

snooky · Post by **snooky** » Sun Oct 16, 2005 12:02 pm

That's a lot of work!

maybe a commercial dev will pick up on your PADsynth code and turn it into something cool!

ahwell, I'm allready a big fan of zyn!

Shifrin · Post by **Shifrin** » Sun Oct 16, 2005 12:24 pm

Cheers

Shif.

FrettedSynth · Post by **FrettedSynth** » Sun Oct 16, 2005 12:27 pm

Hello paulnasca

Bless you, Like I said before! I guess you have already been Blessed and now me too

Thanks
Fretted Synth

fritzman · Post by **fritzman** » Sun Oct 16, 2005 12:42 pm

Hi Paul

thanx a lot. I will check that out.

Best wishes, FRitz

MadBrain · Post by **MadBrain** » Mon Oct 17, 2005 3:03 am

That's a very nice sounding variation of additive synthesis, with extremely nice applications for "wide" sounds.

I wonder if there's a way to get similar sounding sounds out of the more standard "bin" additive synthesis - probably by using random modulation, in both amplitude and phase, of the harmonics, and using more (higher frequency) modulation on the higher harmonics, don't you think?

karmafx · Post by **karmafx** » Mon Oct 17, 2005 10:06 pm

very nice work, Paul. Thanks for sharing !

Mikomi · Post by **Mikomi** » Sat Nov 12, 2005 11:19 pm

That sounds pretty stellar. I salute you and your contibutions to the open source community

mdsp · Post by **mdsp** » Tue Nov 15, 2005 7:55 am

it seems that your algorithm is a special case of Bandwidth-Enhanced Additive Synthesis which is used in Loris http://www.cerlsoundgroup.org/Loris/

here is the paper http://www.cerlsoundgroup.org/Loris/pap ... iation.pdf

however Loris is mostly used for sound modeling/ resynthesis of exisiting sounds while your algorithm focuses on synthesis of evolving textures.

nice shot, it seems to be both efficient and versatile.

cheers

LIMITAPROACHINGINFINITY · Tue Nov 15, 2005 8:03 am

Hey thank you a lot!!

daGuru · Post by **daGuru** » Tue Nov 15, 2005 8:32 am

Good Karma for you, Pauly-boy

Well done

(edit: Whoops, I see you are a good Christian... hehe... I hope my good "Eastern" will still applies

)

duncanparsons · Post by **duncanparsons** » Tue Nov 15, 2005 9:02 am

Thank you Paul. A very genrous gesture

DSP

paulnasca · Post by **paulnasca** » Mon Nov 28, 2005 8:30 pm

Hi.
I am glad that you like PADsynth algorithm

Hope I will see it in other synths

I want to make an offer:
Is anyone interested about PADsynth implementation from ZynAddSubFX? I mean, I can pull out the PADsynth code from ZynAddSubFX and re-release under Public Domain, to be legally possible to be included in any software synth.
Please notice that I am not reffering to the example implementation code from PADsynth page, because it's already under Public Domain.

The PADsynth code from ZynAddSubFX, is optimized (I am reffering to PADsynth algorithm itself, and the sample playback - PADsynthParameters.*,PADsynth.* files).
It will require some time to make reusable (to remove the dependences from ZynAddSubFX) but, if you'll be interested about it, I will do this

.

Paul

karmafx · Post by **karmafx** » Mon Nov 28, 2005 11:06 pm

Hi Paul! I think that would be cool! If I was to use the method I would propably roll my own code, but it would be nice to get ideas from I guess. One thing that bothers me about the method though is the fact that you have to "apply changes" everytime you tweak something. I mean it would be much more user-friendly if the changes were applied in real-time. Could this perhaps be achieved using overlap/add? or does the large ifft preclude this ? Note however that I think the sound quality of the method is really, really good, so I'm being picky, I know

duncanparsons · Post by **duncanparsons** » Mon Nov 28, 2005 11:09 pm

I, for one, would be interested..

DSP

Documentation of the PADsynth synthesis algorithm