- #1
bumclouds
- 25
- 0
Hey guys,
For school I have to study the zero-crossing demodulation method of reconstructing an FM signal.
So far what I've been reading has been confusing me a bit and I have a few questions to ask:
1) How does a LP-filter act as a "time averager" for a train of impulses?
2) Does the resultant signal after LP-filtering resemble the original message signal? Is it DC shifted or amplified at all? If it is DC shifted how can you get rid of that?
thanks guys.
For school I have to study the zero-crossing demodulation method of reconstructing an FM signal.
So far what I've been reading has been confusing me a bit and I have a few questions to ask:
1) How does a LP-filter act as a "time averager" for a train of impulses?
2) Does the resultant signal after LP-filtering resemble the original message signal? Is it DC shifted or amplified at all? If it is DC shifted how can you get rid of that?
thanks guys.