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Re: Repairing Clipping

Subject: Re: Repairing Clipping
From: "John Lundsten" lundsten_john
Date: Sat Mar 20, 2010 7:22 am ((PDT))
Audition is very good at estimating the probable missing values on a "flat=

topped" or clipped waveform.
Select Clip reduction in edit page
 The method:-
1) have the file in 32float format. [almost certainly you will be creating=

vol values greater than 100%, this is fine in 32bit float & a disaster in
any Integer format]
2) a clipped waveform is recognised by there being 2 or more samples at
max/0dBfs. So if the clipping is not at max level make it so. Eg normalise=

to +1dB.
3) apply "Clip reduction"
4)  Normalise to say 0.1dB. If you don't it is highly likely that tho you
now have nice looking waveforms with rounded tops the D-A converter will
overload due to the way more than 100% sample values.

there are lot's of further subtleties when the clipped top is not flat but=

wobbles.
John L

chrishails50 wrote

In a recent post on the bagpipe recording Dan Dugan said something that
intrigued me:

"Since it isn't simple clipping, I don't think there's any way to repair th=
e
recording."

Dan could you (or others) tell me more about this repair ? I thought if a
recording was clipped then nothing could be done. I use Audition as my
routine editor and have tried the simple gain adjuster (amplify/fade), but=

if something really has gone beyond limits I have not been able to pull it=

down and make it sound better.

Thanks for any tips.

Chris




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