You can represent the bandwidth with double the
sampling rate as the bandwidth frequency but there is a
component missing from the sample information that has
to be known and is not part of the samples. Namely the
base frequency has to be added back into the formula.


"daestrom" wrote in
message
...

So, if I have a signal with a 1000 hz carrier, with a
bandwidth of 50 hz,
you think I can sample it at just 150 hz and get
accurate reproduction?
That's just wrong.

It is the maximum frequency component in the signal
that is important. The
bandwidth is not related unless the lower edge of the
band is at 0 hz
(whereupon the upper side of the band is equal to the
max frequency).

daestrom