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Re: after workshop question

Subject: Re: after workshop question
From: "su anderson" <>
Date: Thu, 27 May 2004 14:42:32 -0000
Dan. Can you explain how to do the high pass filter?  I have Cool 
Edit.
su anderson in Marin, CA

--- In  Dan Dugan <> wrote:
> Eric asked,
> 
> >I'll try again.  I am talking about the relationship between the 
recorded
> >sounds.  Not how to get rid of any particular sound.  In the real 
world
> >there are two sounds one that is wanted one that is not.  Upon 
recording the
> >unwanted sound overrides the wanted sound so much that it is 
inaudible.
> >What I want to know is if the unwanted sound is filtered out, will 
the
> >wanted sound appear, or is it lost.
> 
> It depends on whether the sounds are really separate in frequency 
> content, and whether there was no distortion in the recording 
> process. Almost all sounds are complex with harmonics and noise 
> included, so filtering out the main frequencies will still leave 
all 
> the harmonics and noise content that may overlap what you're trying 
> to hear. Distortion in the recording process will "spread" the 
sounds 
> all over the spectrum and make it impossible to separate them by 
> filtering.
> 
> I have been very pleased to discover that with digital recording, 
> filtering works better than it ever did in analog, because the 
> distortion is so low. I've found I can high-pass filter quite high 
> levels of airplane or wind noise, as long as it didn't distort, and 
> leave the track sounding amazingly clean.
> 
> Try it.
> 
> -Dan Dugan



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