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Re: noise reduction techniques

Subject: Re: noise reduction techniques
From: "Rich Peet" <>
Date: Fri, 02 Jan 2004 22:25:56 -0000
In answering an off line question regarding my post I guess I should 
clarify part of my prior post.

Editing for Consumer MD effects for me involves two things.

1. When there is no audio that is important above 15,000 cycles I 
drop the gain in this region by 50% to 75% (6db to 10db) on a slope.  
It does not effect the overall recording and hides the ragged 
compression of this area that can be seen on a spectral display which 
is the signature to many that the recording was a MD.  It really does 
not change the heard audio any, but for those that pay attention it 
fools a few of them into thinking they may be looking at a 24 bit 
recording with >100db s/n.  I use it with restraint but hey if it 
makes someone think that I am better and have higher tech equipment 
then I do then it was worth the effort.  This part of the edit is 
vanity. 

2. The real edit for consumer MD effects is to cover a less than pro 
mic preamp.  The mic pre noise is pretty uniform over everything.  If 
there are portions of the sound spectrum that are not used at all it 
makes sense to drop the gain 50% in those areas as you are 
effectively increasing the signal to noise level. Keeping in mind my 
own bias that bass, even if uniform, is needed in a natural sound 
recording for use as a reference.

So to make it clear, I am not trying to hide artifact or any real 
defect of any kind in editing Consumer MD recordings.

rich





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