[Discuss-gnuradio] Multiple inputs on LFRX - phase difference and zero-crossings detection

2010-07-29 Thread grc007
Hello, I now have a project with the following specifications: I need to send 2 input-signals parallel over USRP, then find out the zero-crossings (time) of each signal so I can calculate the phase difference of them. The 1st signal S1 is up to 1MHz The 2st signal S2 is about 50 Hz 1. Sending 2 i

[Discuss-gnuradio] how to find local peak of sinc function ? peak detector setup ?

2010-06-17 Thread grc007
, 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 -- View this message in context: http://old.nabble.com/how-to-find-local-peak-of-sinc-function---peak-detector-setup

[Discuss-gnuradio] what are taps ? how to set number of taps in filter ?

2010-06-14 Thread grc007
Dear users, Can anyone explain me what taps (in filter) means ? Any examples should be great Particularly in GRC which number should I give taps in filter bank, FFT filter, filter delay, ? Thanks a lot. -- View this message in context: http://old.nabble.com/what-are-taps---how-to-set-num

[Discuss-gnuradio] Modifying .cc file of gr_peak_detector. Change number of output ports ?

2010-05-18 Thread grc007
Hello all, I try to modify the C++ code of the gr_peak_detector2_fb.cc. The peak_detector gives only 1 or 0 out if it found a peak. I want that it will give me also where the peak is and the amplitude of the peak. My questions are: - Which variables in the code can give me these information (ampli

[Discuss-gnuradio] peak detector modification / max amplitude

2010-05-14 Thread grc007
ere 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 -- View this message in context: