On Wed, Oct 20, 2004 at 09:07:48AM -0700, Steve Meier wrote: > First, you should always have a low pass filter which is well bellow 1/2 > the sampling frequency just before your a/d converter.
Make that "a band limiting filter whose bandwidth is less than 1/2 the sampling frequency". There is no reason you need to choose this band to be the 0 to 0.5*Fs range. A bandpass filter with passband from 1.1 to 1.4 times the sample rate is fine too. But of course, in this particular case, it is a low pass filter which is called for. -Dan --
