Re: [LAU] jconv settings

On Sun, Sep 27, 2009 at 12:00:42PM +0200, Jörn Nettingsmeier wrote:

> nothing prevents you from using aliki to capture some old fender amps.
> but you should take into account that it only makes sense for the linear
> operation, i.e. the tone color of the clean amp and speakers. as soon as
> distortion sets in, simple IR will no longer cut it.

But it *is* possible to both measure and recreate non-
linear systems using convolution. If your input signal
is x(t), you need separate IRs to convolve with x, x^2,
x^3, etc. and sum the results. Finding the required IRs
from the measurements requires some mathematical trickery.
But the results can be very convincing, for example a
'telephone' filter implemented this way sounds like the
real thing, unlike the simple bandpass + peaks + dips
often used to do this. Similar techniques can be used
to simulate vintage amps etc.

Ciao,

-- 
FA
Io lo dico sempre: l'Italia è troppo stretta e lunga.
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