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From: David Cubero on 29 Jun 2010 10:48
hi, i have just implemented an envelope detector in order to demodulate am and i have also implemented a dc block (using the main value)
Should I use a filter center in the carrier frequency between the envelopedetector and the dc block to demodulate the signal????
Thank you
From: Walter Roberson on 29 Jun 2010 22:43
"David Cubero" <sirdivi(a)hotmail.com> wrote in message <i0d13k$8os$1(a)fred.mathworks.com>...
> hi, i have just implemented an envelope detector in order to demodulate am and i have also implemented a dc block (using the main value)
> Should I use a filter center in the carrier frequency between the envelopedetector and the dc block to demodulate the signal????

There is more than one kind of Amplitude Modulation, each of which needs to be decoded differently; please be more specific about what kind of AM modulation you are trying to decode.
From: Walter Roberson on 4 Jul 2010 13:01
David Cubero wrote:
> hi, i have just implemented an envelope detector in order to demodulate
> am and i have also implemented a dc block (using the main value)
> Should I use a filter center in the carrier frequency between the
> envelopedetector and the dc block to demodulate the signal????

In general, NO, that is the wrong approach. I already told you why.
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