would be great if it would be in pd abstractions !
everything is in the paper though, you are right, and the method is incredibly 
powerful, so the project was in that time to control it with gestures data 
bases and artificial intelligence and so on, all of this being existing now, 
not speaking about multi channel sound diffusion etc.
I was disappointed when, after having developed the method at IRCAM, i 
discovered (and had to pay for it though) some ten years ago the actual modalys 
thing that was kind of retro engineered after i left IRCAM, from the big C++ 
initial software with was developed between 1984 and 89.

The math is not so complex, it is just a matrix equation incremented step by 
step, and very straightforward and intuitive discontinuities in time domain 
which correspond to straightforward updates of the matrix, resulting for 
instance from contact between objects and other intuitive events.
If you simplify the maths, it will probably become more complex i’d say, and 
you will probably hear it, because time domain sound synthesis is quite 
sensitive.

On the same line, one advantage of modal synthesis is that you can achieve 
impossible physical excitations on imaginary structures, and interpolate 
between all this, having transient sounds and articulations, but even with the 
full math though, you could hear in that case that you were sort of tearing the 
equations, which corresponds to the fact that there is no existing physical 
gesture which you could refer to when exploring impossible configurations.
Math simplification is what happened probably when the available pd modalys 
software was achieved : i was disappointed by this tool and rarely use it.
Another application has been developed by Apple in Logic with the "sculpture » 
plugin : it is very much main stream, they probably make money with it and Im 
still poor. Bref.

I’d love the true vintage thing on pd now : it is just implementing a matrix 
equation with updates conditions.
The point is that, thirty years later, i do not understand anymore a single 
line in C++, although I’ve written many thousands of lines. 
Hmm. I dont believe it myself, how is this even possible ?  But i remember very 
well the principles. Id be happy to help if i can anyway.
jm


> Le 6 août 2017 à 16:50, Jesse Mejia <jme...@anestheticaudio.com> a écrit :
> 
> Yes - I mentioned Ircam's Modalys and that  paper in my initial post. Because 
> modal synthesis is so well known, and well documented, I'm surprised there 
> isn't a similar (but free!) pd implementation. Something with abstractions 
> instead of externals would be great.
> 
> So let's make one. I know it's a bank of resonant bandpasses, but working out 
> their relationships based on the modal characteristics of physical shapes 
> seems to be key, and abstracting those relationships to friendly controls.
> 
> The math in the papers is a bit beyond me but it looks like it's all there. I 
> can't tell by looking at it if it's something that would be too hard/annoying 
> to do with vanilla.. or if it's describable in a less math heavy way.
> 
> Alex - newly compiled versions of the stk would be great! I tried and failed 
> at that about a year ago. But the faust implementations compile well from 
> faust to pd.
> 
>> On Aug 6, 2017, at 3:24 AM, cyrille henry <c...@chnry.net> wrote:
>> 
>> 
>> 
>>> :)
>>> indeed and i had myself to _pay_ for it, which is something that probably 
>>> illustrates the "élégance à la française"
>>> jm
>> 
>> I did not encourage piracy, but since pd patch can't be protected I guess 
>> that an anonymous source could leak the files without any trouble.
>> 
>> cheers
>> c
>> 
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