"Arny Krueger" wrote in message ...
"Bob-Stanton" wrote in message
om

The threshold of visibility is -60 dB. In audio terms, that would
be 0.01% distortion.

-60 dB is 0.1%


Yes, I agree. My mistake

-20 dB = 10% distortion
-40 dB = 1% distortion
-60 dB = 0.1% distortion

It just proves the old saying:
"There are three kinds of people in this world. Those who can do math
and those who can't." :-)

Bob Stanton