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From: "Dr. Thomas Tensi" <>
Subject: Re: Reduce distortion?
Date: Fri, 17 Jul 2020 10:38:17 +0200
Message-ID: <> (raw)
In-Reply-To: <875zan9nm5.fsf@lenovo>

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".

Maybe you can report your success (or failure)?

	Best regards,


Sox-users mailing list

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Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-16 21:05 Rodolfo Medina
2020-07-17  8:38 ` Dr. Thomas Tensi [this message]
2020-07-17  8:52   ` Rodolfo Medina
2020-07-17  9:56     ` Dr. Thomas Tensi
2020-07-17 12:33       ` Rodolfo Medina
2020-07-17 12:45         ` Dr. Thomas Tensi
2020-07-17 12:49           ` Måns Rullgård
2020-07-17 13:02             ` Rodolfo Medina

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