On Sat, 20 Nov 2010 15:57:15 -0500, Randy Yates
wrote:
(Don Pearce) writes:
[...]
FFS. The dB is NOT a unit of anything. It is a ratio expressed in log
form for convenience (to avoid huge numbers). Nothing more and nothing
less.
"dB" is a ratio of powers.
Quite, but provided you don't change the impedances in the meantime it
is also a ratio of voltages or currents.
http://www.digitalsignallabs.com/db.pdf
"dBm", "dBV", etc., are units.
The "m" and the "V" are the units, not the "dB" part.
d