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. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
