Removing Air Noise

Hi

I have made a recording to CD from an old reel-to-reel tape of a live
recording circa 1970
Playing the cd on my cd player there is a constant crackling just like
a radio with bad reception. I've been told this is 'air noise'
(whatever that is) caused by the microphone

I have tried cleaning it with cool edit pro v1 but to no avail
Anyone know if it's possible to clean my recording and if so how?

Martin
©¿©¬
REMOVETHIS to reply

Did the original recording have this noise?
Did the WAV file on your hard drive have this noise?
I thought not.
See http://www.gmayor.com/copy_vinyl_to_CDR.htm
The crackling has almost certainly roots in a media mismatch with your
writer.

--

Graham Mayor





Martin ©¿©¬ wrote:
Hi

I have made a recording to CD from an old reel-to-reel tape of a live
recording circa 1970
Playing the cd on my cd player there is a constant crackling just like
a radio with bad reception. I've been told this is 'air noise'
(whatever that is) caused by the microphone

I have tried cleaning it with cool edit pro v1 but to no avail
Anyone know if it's possible to clean my recording and if so how?

Martin
©¿©¬
REMOVETHIS to reply

"Martin ©¿©¬" wrote

I have made a recording to CD from an old reel-to-reel tape of a live
recording circa 1970
Playing the cd on my cd player there is a constant crackling just like
a radio with bad reception. I've been told this is 'air noise'
(whatever that is) caused by the microphone

How did you make the transfer to CD?

Rick.
-+---

http://www.alienshore.com/seeking/

I have tried cleaning it with cool edit pro v1 but to no avail
Anyone know if it's possible to clean my recording and if so how?

I have an CoolEdit 2000. If it's crackling noise you might
need to use Click/Pop Eliminator. If it's just a constant hiss
you might use Noise Reduction.

I'm not sure what options you have on your version.

Wow, just went to their website and Adobe bought them out.
It's now called Adobe Audition! An upgrade for 2000 & Pro v1
is $99.

--bruceh

Martin =A9=BF=A9=AC wrote:
Hi
=20
I have made a recording to CD from an old reel-to-reel tape of a live
recording circa 1970
Playing the cd on my cd player there is a constant crackling just like
a radio with bad reception. I've been told this is 'air noise'
(whatever that is) caused by the microphone
=20
I have tried cleaning it with cool edit pro v1 but to no avail
Anyone know if it's possible to clean my recording and if so how?

The term I believe you mean is "wind noise" - an artifact of wind=20
blowing across a microphone which is not adequately shielded. (I am not=20
criticizing your English, which is fine, but trying to provide the=20
technical term.)

Wind noise usually shows up as exaggerated and inconsistent very low=20
frequency sound. One problem is that it can cause overrecording -=20
clipping - when digitized and that is likely to create readily audible=20
sounds. If the problem is wind noise, try first running a steep=20
low-frequency filter; for rumble (a similar sort of noise but=20
consistent), I use a sixth-order Butterworth at 30 Hz. You may want to=20
go a bit higher, perhaps to 40-50 Hz depending on the music and your=20
concern about losing lows.

That should leave you with a file you can edit more easily. Make sure=20
there is no clipping (it changes due to phase shifts when low-frequency=20
filtering is applied).

Finally, do not trust CE's declicking. The latest version - in Adobe=20
Audition, the successor to CEPro - is good for single clicks, but the=20
part that declicks a range of audio has never worked well. The two=20
programs that do the job for me are DART Pro and the ClickFix plugin for =

CE/CEP/Audition. They are both costly.

Mike
--=20

http://www.mrichter.com/

"Bruceh" wrote in message
...
I have tried cleaning it with cool edit pro v1 but to no avail
Anyone know if it's possible to clean my recording and if so how?

I have an CoolEdit 2000. If it's crackling noise you might
need to use Click/Pop Eliminator. If it's just a constant hiss
you might use Noise Reduction.

I'm not sure what options you have on your version.

Wow, just went to their website and Adobe bought them out.
It's now called Adobe Audition! An upgrade for 2000 & Pro v1
is $99.

--bruceh

And Pinnacle have taken over Steinberg with Sony grabbing sonic.

On Mon, 9 Feb 2004 14:56:47 +0200, "Graham Mayor"
wrote:

The crackling has almost certainly roots in a media mismatch with your writer.

Can u explain this please

How did you make the transfer to CD?
Rick.

Nero

I have an CoolEdit 2000. If it's crackling noise you might
need to use Click/Pop Eliminator. If it's just a constant hiss
you might use Noise Reduction.
--bruceh

Tried both - didn't work

On Mon, 09 Feb 2004 12:42:25 -0800, Mike Richter
wrote:

The term I believe you mean is "wind noise" - an artifact of wind
blowing across a microphone which is not adequately shielded.

Thanks for the correct technical term

Wind noise usually shows up as exaggerated and inconsistent very low
frequency sound. One problem is that it can cause overrecording -
clipping - when digitized and that is likely to create readily audible
sounds. If the problem is wind noise, try first running a steep
low-frequency filter; for rumble (a similar sort of noise but
consistent), I use a sixth-order Butterworth at 30 Hz. You may want to
go a bit higher, perhaps to 40-50 Hz depending on the music and your
concern about losing lows.

That should leave you with a file you can edit more easily. Make sure
there is no clipping (it changes due to phase shifts when low-frequency
filtering is applied).

Finally, do not trust CE's declicking. The latest version - in Adobe
Audition, the successor to CEPro - is good for single clicks, but the
part that declicks a range of audio has never worked well. The two
programs that do the job for me are DART Pro and the ClickFix plugin for
CE/CEP/Audition. They are both costly.

Mike


No Go there then

Martin ©¿©¬ wrote:
On Mon, 9 Feb 2004 14:56:47 +0200, "Graham Mayor"
wrote:

The crackling has almost certainly roots in a media mismatch with
your writer.

Can u explain this please

If the crackling was on the original tape, you would have noticed it and
therefore not assumed that it was a contribution of the CD process. Any
microphone noise would have been on the tape, so the crackling has been
introduced later and the usual cause of crackling is a media mismatch to the
writer which produces read errors on the CD. Severe read errors sound like
crackling.

--

Graham Mayor

"Martin =A9=BF=A9=AC" wrote:

I have an CoolEdit 2000. If it's crackling noise you might
need to use Click/Pop Eliminator. If it's just a constant hiss
you might use Noise Reduction.
--bruceh

Tried both - didn't work

If you have a website, can you place maybe a 5 second sample
of the 'crackling'? I could take a glance and hear what your
hearing...

--bruceh