How would you approximate guitar feedback using software?

[Atza]

I have an inexpensive FX procesor from korg "Pandora box 4d" it have great feedback effect

www.desktopmetronome.com

[DevonB]

You don't get feedback because your sound card introduces latency. For most of us, that's a benefit. Does your sound card offer real time/no latency monitoring at all?

Devon

[tk421]

I don't know if you tried to play around with Izotope Trash.

You can run two different distortion types in 4 selectable bands, compression/expander in different bands etc. That would give you the ability together with lfo driven filters to open up a frequency range that would be typical of the harmonics of a feedbacked signal. Having one frequency band with a compressor setting that makes it comes through shortly after attack. There are various options how to control filters stage.

I think what happends in feedback loop is that mainly high range remains, dominating totally over low range.

I don't suppose you could post a preset for this? I am having trouble getting started.