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[Discuss-gnuradio] Help with modifying gr.threshold_ff.

From: Tom Beaney
Subject: [Discuss-gnuradio] Help with modifying gr.threshold_ff.
Date: Wed, 6 May 2009 19:14:16 +0000

Hi there,

I'm very much a GnuRadio beginner using it for a final year physics project. Due to the time restraints on my project I apologise for my complete lack of knowledge in almost all areas relating to GnuRadio.
I'm currently trying to build a noise riding threshold system. For this to work
I need the threshold level (both hi and low, although they are set to the same value in my situation) to be able to change with time. My thinking was
to modify use one of the many existing blocks to create my threshold lever and then output this value. This would then be used as a secondary input for gr.threshold_ff, as well as the normal float stream. If anyone could let me know how to do this, or point me to an example it would be massively appreciated. I'm guessing I may have to compile it from source so if anyone could walk me through that gently I would be eternally in their debt. 

As I said, I've little to no knowledge of the way C++ works, I've spent all of my
undergrad career using Matlab. I feel the people who set the project may have
not entirely thought through the scale of the task.



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