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Old 18th September 2011, 12:30   #1  |  Link
marsoupilami
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Restoring clipped audio?

Hi there!

I would like to transfer a language track from a vcd into a dvd (both legally purchased). Since this audio is the only available source, I'm looking for a chance to "repair" it.
Clipping occurs in my opinion at about 50% or a little less.
Any ideas?

Many thanks in advance!
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Old 18th September 2011, 12:33   #2  |  Link
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A sample please ?
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Old 18th September 2011, 12:53   #3  |  Link
marsoupilami
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Yep!
Here is a sample of highly clipped part
Attached Files
File Type: zip ClippedSpl.zip (283.1 KB, 33 views)
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Old 22nd September 2011, 10:57   #4  |  Link
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iZotope RX ($349) usually does a good job.
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Old 22nd September 2011, 13:24   #5  |  Link
mike20021969
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Quote:
Originally Posted by marsoupilami View Post
Yep!
Here is a sample of highly clipped part
I just used the DeClipper in Adobe Audition CS5.5.
There was very little (audio) difference after the fix.
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Old 24th September 2011, 11:46   #6  |  Link
marsoupilami
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Thanks for your answers!

I tried the demo of iZotope (which cannot save the file) and my old version of cooledit of which I think it is the "father" of Adobe Audition...
Both results sound a little better but are not really sufficient.

Obviously what's lost is lost ...

Anyway - thanks again!
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Old 3rd October 2011, 05:05   #7  |  Link
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iZotope RX is a software that is used for restoring clipped audio,eliminate clicks and crackle,supress unwanted sounds,resynthesize missing audio...
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Old 4th October 2011, 09:40   #8  |  Link
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One cannot restore a clipped audio, if by "restore" one understands getting the signal as before the clipping. What "restoring" software do is to minimize the impact of clipping, either by flattening the part where the clipping occurred (older methods), or by trying to approximate the original curve (newer methods). Depending on how bad the clipping is, the second methods may fail, unless very clever (and thus expensive) algorithms were used.
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Old 5th October 2011, 11:39   #9  |  Link
marsoupilami
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Hi!

Both "resynthesize missing audio..." and
"trying to approximate the original curve (newer methods)" are exactly what I mean.

What could be a program using a "clever algorithm"?
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Old 5th October 2011, 18:30   #10  |  Link
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If the question is directed to me, frankly I have no idea, never used it, I always record at -12 - -8dB (for digital).
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Last edited by Ghitulescu; 15th October 2011 at 17:45.
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Old 5th October 2011, 20:38   #11  |  Link
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Izotope RX Advanced is probably the best you have, you need to play with the settings. It's expensive for a reason.

Audacity has a de-clipper plugin, but I've never used it.
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