Re: [Discuss-gnuradio] Peak detector block does not really work. It need to be fixed

2010-08-24 Thread Phong Do
Hello Tom, Can you explain me why should gr_peak_detector need negative inputs ? What about the variable "look ahead" ? I wrote in the last message that "look ahead" has no function in gr_peak_detector. Do you know how can I add this feature in peak detector ? Thanks in ad

[Discuss-gnuradio] Peak detector block does not really work. It need to be fixed

2010-08-12 Thread Phong Do
code: return tmp; Can anyone of the development team have a look at the 2 cpp ? best regards Phong Do C++ code: http://old.nabble.com/file/p29349773/gr_peak_detector_fb.cc gr_peak_detector_fb.cc http://old.nabble.com/file/p29349773/gr_peak_detector2_fb.cc gr_peak_detector2_fb.cc -- View th

Re: [Discuss-gnuradio] zero crossing detection. parallel inputs to USRP

2010-08-12 Thread Phong Do
> >- What is the maximum voltage can I feed the daughter-board through SMA > ? > Roughly 0dBm would be a safe bet. Which translates to roughly 0.22V There are several handy places on the web for doing conversions between dBm and voltage: http://www.raltron.com/cust/tools/voltage_to_dbm.

[Discuss-gnuradio] zero crossing detection. parallel inputs to USRP

2010-08-09 Thread Phong Do
Hello, I have once post this message. Please help me cause its very urgent. 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

Re: [Discuss-gnuradio] Need HELP - Modifying gr_peak_detector

2010-08-06 Thread Phong Do
Hello again, I have modified a new cc code gr_peak_detector3_fb. But it was said that: 'd_look_ahead_remaining’ was not declared in this scope. Can anyone please have a look at it ? Thank you Regards Phong Do http://old.nabble.com/file/p29356431/gr_peak_detector3_fb.cc gr_peak_detector3_

[Discuss-gnuradio] Modifying gr_peak_detector

2010-08-04 Thread Phong Do
tops running in scope sink). So I decided to use the first peak detector for my work, but I need also the look ahead function. Could anyone please help me in modifying the C++ code ? best regards Phong Do C++ code: http://old.nabble.com/file/p29349773/gr_peak_detector_fb.cc gr_peak_de