Re: [Discuss-gnuradio] using GNU radio to generate audio signals

2010-06-08 Thread Tom Rondeau
On Tue, Jun 8, 2010 at 2:59 PM, Brad Buran wrote: > In our research lab we generate a variety of audio signals to study > auditory perception.  These signals include pure tones (ramped on/off > by cosine squared envelopes), amplitude-modulated noise, sequences of > signals (noise followed by a ton

[Discuss-gnuradio] make check errors in writing a new signal processing block

2010-06-08 Thread udadidd
Hi While testing a new signal processing block, i made a new cube_ff block. changed my howto.i, Makefile, Makefile.am, Makefile.in files. I am stuck at this error. I have no clue how do i proceed further. Please let me know if any of you had faced this error before and got over it natasha-devroye

[Discuss-gnuradio] GMSK Spacecraft Groundstation Modular Installation

2010-06-08 Thread fangming he
Hi, Did anyone installed GMSK Spacecraft Ground station module? Does it require gnuradio-3.1.3? Can we use higher version of gnu radio? Please let me know it. Thanks! Best Fangming _ Your E-

[Discuss-gnuradio] using GNU radio to generate audio signals

2010-06-08 Thread Brad Buran
In our research lab we generate a variety of audio signals to study auditory perception. These signals include pure tones (ramped on/off by cosine squared envelopes), amplitude-modulated noise, sequences of signals (noise followed by a tone, etc.), band-limited noise, etc. Once we generate the wa

Re: [Discuss-gnuradio] synchronization problems with benchmark_ofdm_tx.py and benchmark_ofdm_rx.py?

2010-06-08 Thread Mike Jameson
Hi Chris, I have found that increasing the packet size helps, add "-s 32" and for the tx amplitude, add "--tx-amplitude=5000" to the command line for benchmark_ofdm_tx.py. "ok:false pktno:65471 n_rcvd:1 n_rigth:0" or similar means that it thinks a packet was received but it didn't pass the crc ch

Re: Re: [Discuss-gnuradio] problem with tvrx , wbx and AO-51.

2010-06-08 Thread Patrik Tast
Hi Naveen, That antenna(s) should work. If the coax is more than 5 m I recommend you get a cheap TV pre-amp, ~30 eur. You should use the narrowband FM receiver and NOT the wideband found in the examples. Here is the ECHO linkbudget http://www.amsat.org/amsat-new/echo/Echo_Linkbudget.php Just

Re: [Discuss-gnuradio] Some basic questions

2010-06-08 Thread Martin Braun
On Mon, May 03, 2010 at 09:25:56PM +, jack william wrote: > Hi, > Could someone please answer following questions of mine : > 1) In > pkt = ofdm_packet_utils.make_packet(payload, 1, 1, self._pad_for_usrp, > whitening=True) > > what is whitening? It scrambles up your bits (makes them white in

[Discuss-gnuradio] qt4 python-gnuradio-qtgui dependency errors on Lucid 10.4

2010-06-08 Thread Marius
Hi! I'm getting a bunch of dependency errors if I try to install the python gnuradio GUI. python-gnuradio-qtgui: Depends: libgnuradio-qtgui0 but it is not going to be installed Depends: libqt4-opengl but it is not going to be installed Depends: libqwtplot3d-qt4-0 but it is not going to be inst

Re: [Discuss-gnuradio] Re: problem with tvrx , wbx and AO-51.

2010-06-08 Thread Patrik Tast
Hi All, I just recorded a 30 degree AO-51 pass over Western Finland using a 1.2 m RCP Yagi, USRP1, TVRX and TV pre-amp http://www.vekoy.com/product_info.php?cPath=85_402&products_id=12828 Audio file is located at http://noaaport.poes-weather.com:8081/AO-51/ At 1745Z Tuesday 8th next AO-51 pas

Re: [Discuss-gnuradio] Some basic questions

2010-06-08 Thread Mike Jameson
Hi Jack, Answer to question 1: I believe the whitening option randomises the data bits so that the PAPR (Peak-to-Average Power Ratio) is reduced. Mike On 3 May 2010 22:25, jack william wrote: > Hi, > Could someone please answer following questions of mine : > 1) In > pkt = ofdm_packet_utils.m

Re: [Discuss-gnuradio] modifying how-to-write-a-block 3.2.2

2010-06-08 Thread Ton Ph
Hi , I am a newbie in this topic and trying to search for the answer to the makefile hacking for making my own module eg name "mycustomblock", but in vain... i refered this post but i am unable to get the step by step procedure to solve the problem, since i m new in this please do provide me i

[Discuss-gnuradio] USRP2 synchronization with UHD works!

2010-06-08 Thread 周亮
Hi, After several days test, I got the conclusion that USRP2 could be synchronized with UHD accurately. The lastest UHD version fixed stream bug with PPS and make it possible to sampling with delay less than 0.5ns. I attached histogram of delay distribution. The test is run on two USRP2 rev4.

[Discuss-gnuradio] Re: problem with tvrx , wbx and AO-51.

2010-06-08 Thread Patirck Strasser
schrieb naveen nischal am 2010-06-04 23:49: Hi, I have recently got into doing the SDR, i have been using the both the tvrx and wbx daughter boards for communicating with the ham radio at 435.300Mhz. I am not too good at python so i use GRC. However when i try to receive from the voice from the

[Discuss-gnuradio] Can not use howto with c++

2010-06-08 Thread zzw.1012
Hi, Now, I find a good method to make use of gnuradio blocks with c++ and without python. I get it from http://gnuradio.org/redmine/repositories/browse/gnuradio/gnuradio-examples/c++/dial_tone. So , after install gr-howto-write-a-block successfully, I want to test the block with c++ a