[PlanetCCRMA] [LAD] a treasure trove of information on "Physical Audio Signal Processing"

Stefano D'Angelo zanga.mail at gmail.com
Mon Sep 27 07:03:53 PDT 2010

2010/9/26  <fons at kokkinizita.net>:
> On Sun, Sep 26, 2010 at 04:17:43PM +0200, Stefano D'Angelo wrote:
>> I recently (last friday) got my MSc graduation with a thesis on
>> physics-based (a.k.a. physical) modeling for sound processing and was
>> just about to post a link on this mailing list.
>> http://naspro.atheme.org/public/mt_dangelo.pdf
> Auguri & congratulations !

Ti ringrazio :-)

> The tube amp example is really nice - including the interaction
> with the speaker - all of it: electrical, mechanical and acoustic.
> This is also the first time I see both the impedance and mobility
> models explained in a graduation paper. The fact that the two
> exist is the source of *lots* of confusion - you did well to
> include this, even if it's just a detail in the whole paper.

Well, since almost nobody is into this stuff at my home university I
thought it was a good idea to try to explain most things, even if not
in much detail (the whole thing was mostly prepared during my Erasmus
exchange programme in Helsinki, and there is a whole department
working on this stuff there).

> A question: how many iterations does the tube model typically
> require to converge to the required precision ?

I have to admit I don't know, I will check and let you know. ;-)

> I hope you will continue to develop Permafrost, even without
> optimisation it would make a very nice simulation tool.

Eh... it depends on what is going to happen now, whether I will find a
job or continue within the university and how much spare time I will
be able to have. Money, damn money!

In the meanwhile I already restarted working on it and there is also a
friend of mine helping me (but he's a total beginner in "serious"
programming).. let's see what happens.

BTW, if somebody can offer me a job or a PhD or anything to keep me
working on these things... :-)



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