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[Discuss-gnuradio] Simple Tasks

From: Prateek Dayal
Subject: [Discuss-gnuradio] Simple Tasks
Date: Fri, 7 Jan 2005 15:46:50 +0530


Here it goes :

I want to do some simple things to a signal like

1. Pass it through a comparator so that only the positive part
remians. Its also like passing through a diode

2. Sum up a few samples (say 1000)  of a signal, then reset the sum 
and then sum again. (Basically I want to detect a pulse and use it as
a trigger)

3. Lastly how do i create a block that can be triggered by an external
signal. (Say like a pulse). Is there an example of such a block in GNU
Radio ??

So the question is that all the above kind of things, do they need to
be implemented as a FIR filter. I mean should I find out the transfer
function and then implement it. Can I not do it like say sum of an
array or say compare every sample and pass it or stop it like any
other language say matlab.



Prateek Dayal
B.Tech 4th Year
IIT Guwahati


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