Vladimir Vassilevsky wrote:

>
>
> Tim Wescott wrote:
>
>> I'm trying to think of examples where using an anti-alias filter is a
>> bad idea, or must at least be approached with extreme caution.
>
>
> Digital Oscilloscopes

Check.

> the control systems with the ADC in the loop.

Check. Actually treating this separately because measurement equipment
can have _delay_ but no time distortion, while a control loop can't even
have delay.

> and misc. sensor data acquisition equipment, Anywhere you may be interested
> in the instantaneous value rather then in the averaged waveform.
>
Yes, but do you have some specific examples that will make good charts
for the non expert in the field of the measurement?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Posting from Google? See http://cfaj.freeshell.org/google/

"Applied Control Theory for Embedded Systems" came out in April.
See details at http://www.wescottdesign.com/actfes/actfes.html