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ktd68
Posts: 1
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 Posted - Tue Jul 22, 2003 7:58 pm |
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I am working on audio that I have been able to remove the background noise, but I am having trouble being unable to hear the recorded voices. The sound makes a warbled noise and is understandable some and sometimes not. What will work amplification or something else?
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jonrose
Location: USA
Posts: 2901
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| Posted - Wed Jul 23, 2003 1:29 am |
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Hmmm... If the unintelligibility you have noted occurs after you've done your NR, then it seems that's a dead giveaway. If it sounds that way before you've done anything to it at all, you may ignore the rest of this post...
A warbling sound likely means that you've overprocessed the source file with the Noise Reduction tool. Getting every scrap of noise out of your file is not the objective, here (well, it shouldn't be, anyway!). Try to use less reduction when you do this.
Noise reduction is, necessarily, a destructive process, and the results from its use will always be a trade-off between removing unwanted noise and keeping desired program material.
VoodooRadio's 'first law of noise reduction' applies here.
(noise reduction works best on files with very little noise)
;)
Experimentation is the key, here, as every file will require different treatment.
Good luck! -Jon 
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William Rose
Location: USA
Posts: 467
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| Posted - Wed Jul 23, 2003 2:09 am |
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Also, make sure your "Noise Profile" is noise only. It can sometimes be hard to find a section that fits the bill, but it's extremely important.
And just to put some of Jons answer another way, even under the best of circumstances, if your file has a lot of noise, you cannot completlely remove it without essentially destroying what you want to keep. Remember that it's "Noise Reduction", not "Noise Removal".
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Craig Jackman
Location: Canada
Posts: 909
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| Posted - Wed Jul 23, 2003 6:16 am |
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I never end up using 100% on the noise reduction amount as I find to hards. Back it down to between 70% and 80%, as that will eliminate most of the noise yet minimise the ringy swishy artifacts.
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Craig Jackman
Production Supervisor
CHEZ/CKBY/CIOX/CJET/CIWW
Ottawa, Ontario, Canada
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MusicConductor
Location: USA
Posts: 1524
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| Posted - Wed Jul 23, 2003 9:31 am |
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Ditto! 73%.
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VoodooRadio
Location: USA
Posts: 3971
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| Posted - Wed Jul 23, 2003 10:43 am |
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Of course the degree of N/R that I use is contingent upon the source material, but I too usually end up around the 70% area as well. 
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I said Good Day!
Voodoo
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