Topband: Silver Plated Conductor

[Jim Brown]

On Wed, 21 Nov 2007 19:55:50 -0700, Dan Zimmerman N3OX wrote:

>Now take your .wav file and mix it with the QRN until it's just
>barely copyable.  Now reduce your signal by 1dB, and step downward
>until you can actually hear a change!

The better test is to RAISE the signal by one dB after you've buried 
it in the noise. Those of us working in pro audio have learned that 
changes of a dB or so in the level of a signal that is near the 
noise level are quite obvious, whereas it takes a 10 dB change in 
signals that are well above the noise level to consider it twice as 
loud. 

73,

Jim K9YC