3 Nov
2002
3 Nov
'02
11:24 p.m.
Steve wrote:
Date: Sun, 3 Nov 2002 16:39:02 +0000
From: Steve Harris <S.W.Harris(a)ecs.soton.ac.uk>
Yeah, I'm thinking we're not tackling it
right, if behringer can knock out
a virtual amp harware box for E150 it can't the that cycle hungry.
There's a good chance I could get my hands on a Behringer V Amp 2 for as
long as I need it. If I did, I'd be able to run whatever signal I liked
through it and try different amp/speaker settings, different gain levels,
etc. and produce a lot of data that would hopefully be of use in trying to
produce some sort of "amp modelling" ladspa plugin.
I'm open to suggestions as to what would be the most useful things to
measure, and what to vary across measurements.
My first thoughts were:
- a range of pure tones, say starting at 440Hz and going up 3 octaves,
- ~5 gain levels,
- ~5 amp/speaker simulations,
That'd give us 100 "data points" to work with when it comes to testing our
models.
Comments anybody?
Stuart
4 Nov
4 Nov
12:42 a.m.
On Mon, Nov 04, 2002 at 02:19:51PM +1100, Stuart Allie wrote:
My first thoughts were:
- a range of pure tones, say starting at 440Hz and going up 3 octaves,
low E on a bass is about 40 - 41 Hz, and on guitar
it's about 81 Hz, so I'd suggest starting a lot lower
than 440.
--
Paul Winkler
http://www.slinkp.com
"Welcome to Muppet Labs, where the future is made - today!"
6 a.m.
On Mon, Nov 04, 2002 at 02:19:51 +1100, Stuart Allie wrote:
I'm open to suggestions as to what would be the
most useful things to
measure, and what to vary across measurements.
My first thoughts were:
- a range of pure tones, say starting at 440Hz and going up 3 octaves,
- ~5 gain levels,
- ~5 amp/speaker simulations,
I would stick with one amp model, the best plot we have so far is
of input amplitude: http://quitte.de/spectral-evolution.gif
We know that signal frequency effects the output too, but one thinkg at a
time. It would be interesting to see how mardware boxes' harmonics cary
with amplitude.
- Steve
3:29 p.m.
I've got a Marshall Valvestate VS102R sitting here with an Ibanez 7
string. If you need any samples, let me know.
Cheers,
-Lea.
On Mon, 2002-11-04 at 03:19, Stuart Allie wrote:
Steve wrote:
Date: Sun, 3 Nov 2002 16:39:02 +0000
From: Steve Harris <S.W.Harris(a)ecs.soton.ac.uk>
Yeah, I'm thinking we're not tackling it
right, if behringer can knock out
a virtual amp harware box for E150 it can't the that cycle hungry.
There's a good chance I could get my hands on a Behringer V Amp 2 for as
long as I need it. If I did, I'd be able to run whatever signal I liked
through it and try different amp/speaker settings, different gain levels,
etc. and produce a lot of data that would hopefully be of use in trying to
produce some sort of "amp modelling" ladspa plugin.
I'm open to suggestions as to what would be the most useful things to
measure, and what to vary across measurements.
My first thoughts were:
- a range of pure tones, say starting at 440Hz and going up 3 octaves,
- ~5 gain levels,
- ~5 amp/speaker simulations,
That'd give us 100 "data points" to work with when it comes to testing our
models.
Comments anybody?
Stuart
7855
days inactive
7856
days old
linux-audio-dev@lists.linuxaudio.org
3 comments
4 participants
participants (4)
-
Lea Anthony -
Paul Winkler -
Steve Harris -
Stuart Allie