hi!
i want to demodulate AM signal with DSP...i found an article that says
like this : 

demodulator is illustrated as decimation integration filter. It includes a
multiplier portion and an integration/decimation portion. 

so can we demodulate AM using decimation method?
and what is decimation integration filter?

thank you...

On Thu, 14 Jun 2007 04:57:03 -0500, c1910 wrote:

> hi!
> i want to demodulate AM signal with DSP...i found an article that says
> 
> like this : 
> 
> demodulator is illustrated as decimation integration filter. It includes a
> 
> multiplier portion and an integration/decimation portion. 
> 
> so can we demodulate AM using decimation method?
> and what is decimation integration filter?
> 
> thank you...

Surely a web search turned up something?

It sounds like they're using synchronous AM demodulation, and following
the synchronous demodulator (the multiplier) by a low-pass filter that
operates by integrating then decimating.

-- 
Tim Wescott
Control systems and communications consulting
http://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html