[Discuss-gnuradio] peak detector modification / max amplitude

[grc007]

Hello,
I want to find the peak of input signal (amplitude and time of peak). I
intend to use the peak_detector from GRC.
But all the peak_detectors give me only boolean result (1 or 0).
So I tried to modify the C++ code of gr_peak_detector_fb.cc.
The problem is I'm not really good in C++ 
Here I would like to ask for you help:
- Is there anyway to get the amplitude and time of a peak ?
- Do you have any examples of peak detector ?
- Did anyone try to modify the peak_detector code ?

Thanks so much in advance for a quick reply.
sincerely
grc007
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