Re: Reduce distortion?

[Rodolfo Medina <rodolfo.medina@gmail.com>]

"Dr. Thomas Tensi" <t.tensi@gmx.de> writes:

> Hello Rudolfo,
>
>
> you wrote:
>> I regularly use Sox to mix different audio channels, and I find it a
>> fantastic tool.
>
> So do I.
>
>> Now I did some piano home stereo live recording, and the playback
>> reveals here and there some distortion, probably because the
>> microphones were too close the piano strings.  Tomorrow I'll try
>> to fix that error, but I like today's recordings and am sorry to
>> have to throw them away.  Perhaps can Sox help in some way to
>> reduce the distortion?  Or any other tool?  I suppose also a
>> little could be all right...
>
> In principle it is hard to get rid of digital distortion.  With SoX I
> would use some naive mixing trickery like selective low-pass-filtering
> the distorted parts or mixing the distorted signal with a
> lowpass-filtered and slightly compressed version.  This could mask the
> critical parts somewhat.
>
> You could also try a research project from the Georgia Tech University
> called ClipAway from 2016.  I didn't try it myself, but the approach
> looks interesting.  They have a web-site available where you can upload
> your file and get it "declipped".
>
> https://cplaguna-audio.github.io/ClipAway/
>
> Maybe you can report your success (or failure)?


Thanks you, Thomas...  At the address you report, I don't manage to load my
example...  I click onto `Load example' but nothing happens...  And also the
other buttons, all inactive for me...  Strange...

Rodolfo


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