luaradio
gnuradio
luaradio | gnuradio | |
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6 | 22 | |
590 | 4,796 | |
- | 0.7% | |
4.3 | 9.4 | |
about 1 month ago | 5 days ago | |
Lua | C++ | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
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luaradio
- LuaRadio
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Lua High/Low-pass Filters
Hi all, I'm currently working on some control systems and need a high/low-pass filter in lua. I've found a radiofilter library on github but I dont want to use the whole thing, and am not able to reverse engineer the high/low-pass filter part (tried and failed :/ ) and am also not able to derive it from the wikipedia page.
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Decode RDS data from IQ data file
You can do this using Luaradio. From the example here : https://github.com/vsergeev/luaradio/blob/master/examples/rtlsdr_rds.lua and here : https://luaradio.io/examples/rtlsdr-rds.html replace the line local source = radio.RtlSdrSource(frequency + tune_offset, 1102500) by by an (IQFileSource)[https://luaradio.io/docs/reference-manual.html#iqfilesource] : local source = radio.IQFileSource('/tmp/myfile.cf32, 'f32le', 1102500) Take care to the samplerate, or adapt the script to your samplerate. Tip: use luaradio -v to check samplerate coherence along the chain.
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What is your best GNU Radio Companion FM receiver flowgraph file ? Strangely, no FM receiver on cgran.org !
Instead maybe have a look to this jewel : https://luaradio.io/ Easy to install (a couple of dependencies and a simple copy from git). Using scripting instead of GUI, and based and blocks. Latest version includes built-in applications for demodulation and decoding. Well documented with valuable examples, easy to understand. Linux only, all platforms. I'm a big fan.
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FM stereo decoder? (Linux, command line)
Good news. Following informations on this link (https://github.com/vsergeev/luaradio/issues/64) , I was able to write a little GUI using luaradio embedded in love2d script, change/display frequency using keyboard shortcuts. That was just a quick test, really interesting ;) Have to find the files on my backup.
gnuradio
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Upsampling in Gnuradio is necessary?
In gr-dtv transmitter examples for Gnuradio, I see some times people use a resampler block before the RF hardware sink. Say our sampling rate is ~9.14Msps which satisfies the Nyquist criterion because our samples are complex numbers.
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Capturing FM using SDR
2.1. Thanks for that tip, I forgot that I was able to check the source code of the WBFM Receive block. As you have said, there are mostly the same. There are some differences between how values are picked. The WBFM Receive block would be a synonym of Quadrature demod => Fir Filter (decimation => Low pass filter) => FM Deemphasis. 2.3. My question there is why 10 and not 20 or 100. I understand that the idea is to reduce the sample rate asap, but what I don't understand is why those values were picked and how can I understand what would be the "correct" or "best" value. 2.4. I'm not fully understanding what you said. If I check the WB FM recieve source code the values that are supplied as the cutoff freq and transition width of the Low pass filter differ from the one of the example. The webfm would apply a sample rate / decimation / 2 - sample rate / decimation / 32 as a cutoff freq and a sample rate / decimation / 32 as a transition transition width. Calculating those values would end up in different that the ones supplied in this second example. Again, is there a rule of thumb to pick these values?.
- Hello everyone! I would like to install and run GNU Radio version 3.7.4 in order to follow along with The HackRF GNU Radio tutorial on greatscottgadgets.com/sdr/ but I can’t find prior releases to install. Can anyone help?
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Multi band gfsk demodulation with Nooelec RTL-SDR v5 SDR and gnu radio
Gaussian filter is used only on the tx side, so specifying bt in the receiver makes no sense. Take a look at gfsk mod/demod blocks implementation: https://github.com/gnuradio/gnuradio/blob/master/gr-digital/python/digital/gfsk.py
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What would you rewrite in Rust?
GNU Radio
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Is there a way to delay a signal in time-domain?
Here's the filter coefficients used for the GNU-Radio interpolator block to get you started. This is a 7th order interpolator (i.e., 8 FIR taps) with very good performance. Each "row" of the array sets the delay in steps of sample_time / 128.
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My grandpa is a huge HAM radio fan, so I showed him GNU Radio. Got this text the day he got back home.
From their README: “open-source software development toolkit that provides signal processing blocks to implement software radios.” https://github.com/gnuradio/gnuradio
- The future is now ... again
- GNU Radio
- GNU Radio – the Free and Open Software Radio Ecosystem
What are some alternatives?
airspy-fmradion - Software decoder for FM/AM broadcast radio with AirSpy R2 / Mini, Airspy HF+, and RTL-SDR
PothosSDR - Pothos SDR windows development environment
gnuradio-grc-examples - Simple GNU Radio Companion examples
SDRPlusPlus - Cross-Platform SDR Software
nelua-lang - Minimal, efficient, statically-typed and meta-programmable systems programming language heavily inspired by Lua, which compiles to C and native code.
Node RED - Low-code programming for event-driven applications
wfm-tools - Some DSP tools for FM demodulation
gnss-sdr - GNSS-SDR, an open-source software-defined GNSS receiver
luarocks - LuaRocks is the package manager for the Lua programming language.
sdrangel - SDR Rx/Tx software for Airspy, Airspy HF+, BladeRF, HackRF, LimeSDR, PlutoSDR, RTL-SDR, SDRplay RSP1 and FunCube
srsRAN_4G - Open source SDR 4G software suite from Software Radio Systems (SRS) https://docs.srsran.com/projects/4g
CubicSDR - Cross-Platform Software-Defined Radio Application