Subject: Re: [linux-audio-dev] Writing a driver for this card: your thoughts?
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Thu May 30 2002 - 11:19:23 EEST
On Wed, May 29, 2002 at 03:44:43 -0400, Lamar Owen wrote:
> If one has the amplifier in question, one can produce a reasonable facsimile
> of the transfer function using various waveforms and frequencies, then
> interpolate (cubic splines, probably) to determine a transfer function that
> one cane then put into a 'transfer function engine' that would replicate said
> transfer function. You should be able to characterize down to the individual
> lot number level with enough resolution in the interpolation.
>
> Has such a 'transfer function engine' effect plugin been written?
Yes, but you can't reduce an amplifier down to a simple transfer function,
there are time effects too (delay, freq response, reverb).
The best attempts I've heard at amp modelling have been based on impulses,
plus saturation moddeling. I Am Not A Guitarist ;) YMMV.
- Steve
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