[linux-audio-dev] deconvolver for IR creation anyone?

[Apostolos Dimitromanolakis]

I would be interested in this project too. What I'm looking for is
actuallay an anti-reverb that will be able to cancel reverbs in a
listening room, well always in conjunction with the listener position.
The other useful thing would be a phase-filter to correct the phases
coming out from a two or three way loudspeaker to get clarity in the
sound similar to high-end speakers. I'm surprised that you mind modern
consumer soundcards not linear, after all the sigma-delta converters
used in most of todays soundcards are supposed to be perfectly linear
and it was one of the reasons of their adoption.

Apostolis


Uwe Koloska wrote:

> Hello,
>
> I am looking for a deconvolver, that is able to produce impulse 
> responses from sinus sweeps (and especially the exponentially sweeping 
> sine wave introduced by Farina).
>
> Do you have any suggestions or at least tips to start an 
> implementation by myself?
>
>
> Recently I managed to use the mls tools from nwfiir to produce an IR 
> of my microverb.
>
> I had to learn the hard way, that simple soundcards are not able to be 
> used as MLS source because of the non linearities.  Even a simple 
> DA-AD loop gives a result wave that mls2imp cannot cope with. But an 
> empty loop with an US-122 (unfortunately not with linux for now) gives 
> something very near to a dirac impulse!
>
> The hunt for the linux convolution reverb has started ;-)
>
> Uwe
>