From what I've read and from what I've gotten from Smith, the digital 
waveguide is a foundation of modeling. Makes modeling computationally 
viable with DSP engines of a dozen years ago. 

The specifics of how Line 6 does it,.... would be able to say, and if 
I was, it's a corner of the product they wouldn't let me be privy to, 
especially since I don't write any of their DSP codes.

Waveguides are good for emulating or modeling a host of things. Check 
out,...

http://en.wikipedia.org/wiki/Physical_modeling  

http://en.wikipedia.org/wiki/Digital_waveguide_synthesis

http://en.wikipedia.org/wiki/Karplus–Strong_algorithm


... and to get into J.O. Smith III's work on this, check out,...

https://ccrma.stanford.edu/~jos/

... for more stuff.


Karplus-Strong at the heart of Digital Waveguides, 
Digital Waveguides at the heart of Physical modeling. 
Some pretty cool stuff here.


-Partev 



--- raga.raga@gmx.de wrote:

From: Jan Baumgart 
To: csound@lists.bath.ac.uk
CC: Partev Barr Sarkissian 
Subject: Re: [Csnd] [off-topic] OWL programmable fx board...
Date: Sat, 15 Jun 2013 20:56:06 +0200

Do they really use waveguides for their amp models ?

On 15.6.13 20:44 , Partev Barr Sarkissian wrote:
>
> Modeling paper (circa 1975) -->  Stanford demo of Modeling at AES (Los Angeles circa 1992) -->
>
> -->  (circa 2000) Line 6 Modeling products -->  Tone Core and a host of more modeling products
>    |--->  Julius Orion Smith III (Stanford's Modeling and digital waveguide guru)
>        |--->  other companies doing modeling effects
>
>
> Modeling,.. think Stanford University, CCRMA, digital waveguides and J.O. Smith III.
>
> The POD, modeling amps, effects (including Tone Core) and guitars of Line 6,... all
> stem from that. Marcus Ryle and Michel Doidic of Line 6, just made modeling more
> commercially viable and easy for musicians to use.
>
> Making use of waveguide opcodes in Csound could be useful for emulations,
> he base point or pad to build effects on top of. As a result, I like using
> Csound waveguide opcodes when I can.
>
> There's a pretty cool Developer's Kit for the Tone Core products, for those
> inclined to build you own effects. PC platform only though, no Mac for it, so
> that leaves me out.
>
> Modeling,... it's all pretty cool.
>
>
> Partev
> Repair and Service Tech
> Line 6, Inc
> Calabasas, CA
>
>
>
> ================================================
>
>
> --- rorywalsh@ear.ie wrote:
>
> From: Rory Walsh
> To: csound@lists.bath.ac.uk
> Subject: [Csnd] [off-topic] OWL programmable fx board...
> Date: Sat, 15 Jun 2013 12:55:39 +0100
>
> This looks interesting(think Line 6 ToneCore):
> http://www.kickstarter.com/projects/marser/owl-programmable-effects-pedal
> Anyone who has ever written an audio plugin should find their JUCE
> based 'c++ development framework' pretty simple to use. Of course it
> doesn't look as impressive as MOD*, but it will certainly be cheaper
> and looks a lot more robust.
>
> *http://portalmod.com/en/index.html
>
>
> Send bugs reports to the Sourceforge bug tracker
>              https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
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>
>
>
>
>
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> Send bugs reports to the Sourceforge bug tracker
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