From: "Mike Dennison" <mike.dennison@rsgb.org.uk>
To: rsgb_lf_group@blacksheep.org
Date: Wed, 11 Apr 2001 12:58:54 +0100
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Subject: LF: WOLF - a question
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One of the several variables that I need to get right is the audio level. I 
understand I need to get this within a few dB of -20db or so relative to the 
overload point of my sound card. 

The question is how do I find that point?

On my old computer, I had 'meters' associated with the volume controls 
comprising a bar graph which was green up to a point when it became red. At 
least this showed what may be the overload point. My present computer does 
not have these graphs.

I make the recordings using Cool Edit, and although this has a dB scale, it is 
difficult to determine what this is relative to.

Is there an easy way to set the audio level to optimum? Some software 
perhaps?

Another related question. The last few recordings I made of Valerio, had very 
strong QRN and intermittent local electrical noise peaks, several tens of dB 
above his signal. Should I ignore these when setting the level?


Mike, G3XDV (IO91VT)
http://www.lf.thersgb.net