Hi Andrew,
Il 06/12/23 02:29, Andrew Simper ha scritto:
Thanks for sharing what you're up to! It's a good point with ordering
of variables to be solved, which is critical for a stable solution for
me. I've found solving for all the non-linear dependent voltages (ie
voltages that are inputs to
Hi Stefano,
Thanks for sharing what you're up to! It's a good point with ordering of
variables to be solved, which is critical for a stable solution for me.
I've found solving for all the non-linear dependent voltages (ie voltages
that are inputs to non-linear terms) first really helps. The
Il 05/12/23 15:33, Jacob Møller ha scritto:
Thanks for the interesting discussion on analog modelling.
I am also trying to model some tube circuits, can you guys help me
with understanding how to model this tube in LTSpice?? Thanks
To me it is a 12AX7 with 11V DC connected to the heater.
It is very likely half of a 12AX7 :)
https://www.amplifiedparts.com/tech-articles/12ax7-tube-diagram
From: music-dsp On Behalf Of Jacob Møller
Sent: 05 December 2023 14:34
To: MUSIC-DSP@LISTS.COLUMBIA.EDU
Subject: Re: Symbolic circuit solving (was Re: Simulate simple EQ circuit
Hi Andrew,
Il 04/12/23 02:02, Andrew Simper ha scritto:
I chose to base my symbolic system on how I can see Mathematica
represents things: an n-ary expression tree, which is working out well
for me. I'm using a sorted n-ary tree structure where each node has a
"head" saying what the node is
I just wanted to say I am awestruck with the amount of good advice so far!
(I have not in any way given up or conceded the fight, just my day job that
got in between. I do somehow understand how reactances can be seen R -->
Ljω --> 1/ Cjω and I have some kind of conception about Kirchhoff's and
Hi Stefano,
That's great to hear you've got a symbolic solver up and running as well!
Some of the details I'm sure are trade secrets, but if you're willing to
chat I think it would be interesting to talk about things a bit, and to get
things started below is a quick overview of what I'm up to.
I
Hi,
FWIW, I second to everything Andy said.
However, this caught my attention:
Il 01/12/23 10:11, Andrew Simper ha scritto:
I've simulated a similar circuit in full: Ibanez Tube Scream. To do so
I've written a c++ based symbolic circuit solver that optimises the
equations and generates c++
Yes, it’s true. I mainly wanted to get the point across that he wouldn’t be
opening up a fundamentally different approach to his solution. If he’s not sure
how to analyze his circuit before reading "VA", he still won’t be. ;-)
> On Nov 30, 2023, at 12:20 AM, Vadim Zavalishin
> wrote:
>
>
It’s a good source, but bear in mind that it doesn’t get you new kinds of basic
filters, and its strength is in designs that give you good behavior while
time-varying the parameters. In other words, it’s more important for synth
filters with frequency controlled by envelope generators than for
There are a few quite detailed pedal analysis posts, like this one for the
DS-1, on this website:
https://www.electrosmash.com/boss-ds1-analysis
Maybe it helps with analyzing your circuit.
Cheers,
Gabor
On Wed, Nov 29, 2023 at 11:52 PM robert bristow-johnson <
r...@audioimagination.com> wrote:
Thank you for all your great advice so far! It gives some really good hints
which trees to consider barking up, so to speak. Well, I first have to
become multicellular, and evolve eyes, then find the trees, but you get the
idea.
I enclose the full schematic if anyone's curious, my guess was that
On Nov 29, 2023, at 1:28 PM, robert bristow-johnson
wrote:
> On 11/29/2023 3:09 AM EST Jens Johansson wrote:
>> and simulate the below circuit just with simple(r) feed-forward and feedback
>> algorithms, or is it so complex that I would have to take the step how to
>> learn to deal with those
Absolutely fascinating stuff and something that I’ve never been able to pursue.
A cogent, practical, paper with a similar goal set is here. Do let us know how
you get on!
WDF would be one way, nodal analysis or modified nodal analysis another one.
However, in this case you should be able with help of a software, which deals
well with symbolic math, to figure out the transfer function by “reducing” this
circuit to a complex voltage divider. Just by fusing
15 matches
Mail list logo
