Has anyone ever done any circuit modeling in Csound? I've been brushing 
up on my tube physics and math, and thought I'd give some ideas a go, so 
I was wondering if any examples of such models exist out there that I 
can look at. Thank you!

-- Darren Landrum

You will want to investigate SPICE models and tools:

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

The "nasty" aspect of modelling analog circuits is that non-linear 
behaviour is often central to the results. And also that circuits are 
often effectively zero-delay (at least compared to the hefty 
single-sample time increment of a digital system), such that large-scale 
oversampling is often required.

Component models themselves (e.g. valves[=tubes], transistors) are often 
pretty complicated, and full circuit emulation that much more so, so I 
would question how many models would run in real-time if implemented via 
opcodes!

Richard Dobson




Darren Landrum wrote:
> Has anyone ever done any circuit modeling in Csound? I've been brushing 
> up on my tube physics and math, and thought I'd give some ideas a go, so 
> I was wondering if any examples of such models exist out there that I 
> can look at. Thank you!
> 
> -- Darren Landrum
> 
> 
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound"
> 
> 

http://mir.dnsalias.com/oss/spicesound/start

-c.

Anthony Kozar wrote:
> I remember reading a discussion somewhere (probably a mailing list) about
> someone who was using a modified open-source version of SPICE to process
> audio.  Sorry that I do not remember any details, but if you search for it,
> the info is probably out there somewhere.
>
> Anthony Kozar
> mailing-lists-1001 AT anthonykozar DOT net
> http://anthonykozar.net/
>
> Richard Dobson wrote on 1/19/08 4:09 PM:
>
>   
>> You will want to investigate SPICE models and tools:
>>
>> http://en.wikipedia.org/wiki/SPICE
>>     
>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>
>
>   


-- 
www.cesaremarilungo.com 

Richard Dobson wrote:
> You will want to investigate SPICE models and tools:
> 
> http://en.wikipedia.org/wiki/SPICE
> 
> The "nasty" aspect of modelling analog circuits is that non-linear 
> behaviour is often central to the results. And also that circuits are 
> often effectively zero-delay (at least compared to the hefty 
> single-sample time increment of a digital system), such that large-scale 
> oversampling is often required.

Yeah, I was going to ask about oversampling in Csound at some point. 
Really, I was just hoping I could use Csound as a test bed for some ideas.

> Component models themselves (e.g. valves[=tubes], transistors) are often 
> pretty complicated, and full circuit emulation that much more so, so I 
> would question how many models would run in real-time if implemented via 
> opcodes!

I've definitely been doing a lot of reading up lately. Like I said 
above, I was just hoping to figure out a way to test ideas out. Thanks 
for the reply!

-- Darren

I remember reading a discussion somewhere (probably a mailing list) about
someone who was using a modified open-source version of SPICE to process
audio.  Sorry that I do not remember any details, but if you search for it,
the info is probably out there somewhere.

Anthony Kozar
mailing-lists-1001 AT anthonykozar DOT net
http://anthonykozar.net/

Richard Dobson wrote on 1/19/08 4:09 PM:

> You will want to investigate SPICE models and tools:
> 
> http://en.wikipedia.org/wiki/SPICE