In article , Glenn Booth
wrote:
Hi,

In message , Ian Molton
writes
JustMe wrote:

So, who's going to build me an Alchemist Kraken APD6aII filter for
use with an 8000S then?

Theres a bit of a gap betwixt theory and practice here... whilst linear
amps arent theoretical, the 'amp emulator' is and would need
considerable research to get right.

I think the technology exists, but it isn't going to be cheap. You'd
need to model the amp (probably using convolution, by measuring impulse
responses), a la Focusrite's Liquid Channel, and then use a bucketload
of DSP to implement the model.

The snag, I think, is that the above assumes linear superposition is
applicable. This may not be the case, depending upon the nature of any
distortion mechanisms.

IIRC speaker manufacturers and reviewers swiftly stopped using impulse
functions for FFT-based analysis for this reason. The impulse tended to
suffer more from nonlinear effects than max-length 'noise' equivalents.

Rather than try and 'automate' a general process like the above, it would
probably make more sense to perform some suitable measurements, then apply
some human intelligence to deduce/guess a possible near-equivalent 'effect'
in cases where that looked feasible given the understanding available.

Slainte,

Jim

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