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[Discuss-gnuradio] how to find local peak of sinc function ? peak detect
From: |
grc007 |
Subject: |
[Discuss-gnuradio] how to find local peak of sinc function ? peak detector setup ? |
Date: |
Thu, 17 Jun 2010 14:28:39 -0700 (PDT) |
Hello,
I need again your help for this problem:
- I want to locate the peaks (local maximum) of the input signal, which is
sinc-function pulse (the 2 gray points in picture sincpuls.png, not the
neighbour peaks).
How can I use the gr_peak_detector in grc to do this ? which values I should
give threshold_factor_rise, threshold_factor_fall, lookahead, alpha ?
- If you look at my grc-picture (peakfalse.png) you will see that the peaks
are not at the right places. They happen before the true peaks of the
sine-function. How comes this ? ( My value for threshold_factor_rise,
threshold_factor_fall, lookahead, alpha : 10,10,100,0.001 )
Thanks in advance.
grc007
http://old.nabble.com/file/p28919877/sincpuls.png
http://old.nabble.com/file/p28919877/peakfalse.png
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- [Discuss-gnuradio] how to find local peak of sinc function ? peak detector setup ?,
grc007 <=