airspy-fmradion
gr-nrsc5
airspy-fmradion | gr-nrsc5 | |
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4 | 5 | |
132 | 119 | |
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9.1 | 7.6 | |
17 days ago | 5 days ago | |
C++ | Python | |
GNU General Public License v3.0 only | GNU General Public License v3.0 only |
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airspy-fmradion
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Listen to HD radio with a $30 RTL SDR dongle
I have a little hobby project where I record an FM radio music station using a SDR and then remove all the non-music portions for offline listening. I like the music selections the DJs pick, but I prefer not to listen to the DJ commentary and the advertisements.
I evaluated three methods of recording: analog capture from a standalone FM receiver, using this nrsc5 library to record the "HD" radio stream, and using an AirSpy SDR with this library: https://github.com/jj1bdx/airspy-fmradion
Recording the "HD" (what a misnomer) radio was nice in that there was no hiss or multipath effects, but in comparison to the other methods the digital compression artifacts became impossible to un-hear. It seems to top out at about 96 kbps
The airspy-fmradion library has some nice stuff in it to address multipath, resulting in the best audio quality of the three methods I tested.
I use https://github.com/ina-foss/inaSpeechSegmenter to identify which segments of the recordings are speech vs. music.
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How to receive and record fm radio in stereo on the command line
Alternatively, use airspy-fmradion:
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Ubuntu 20.04 SDR FM retransmit to a single user
You might want to look into using https://github.com/jj1bdx/airspy-fmradion instead of rtl_fm for stereo.
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FM stereo decoder? (Linux, command line)
You can use https://github.com/windytan/wfm-tools together with rtl_fm to get stereo, though I prefer https://github.com/jj1bdx/airspy-fmradion
gr-nrsc5
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Listen to HD radio with a $30 RTL SDR dongle
The code of nrsc5 (and my transmitter project, https://github.com/argilo/gr-nrsc5) would be the best source of information for the undocumented parts. I do have some private notes, but the useful information has already gone into the code.
- How can I do this? Is there a tutorial video?
- HackRF WFM Transmission with Station Data etc
- mayhem equivilent for pc
- HD/DAB pirate radio?
What are some alternatives?
AIS-catcher - AIS receiver for RTL SDR dongles, Airspy R2, Airspy Mini, Airspy HF+, HackRF, SDRplay and SoapySDR
gr-dsd - GNU Radio block for Digital Speech Decoder
openwebrx - Open source, multi-user SDR receiver software with a web interface
SoapySDR - Vendor and platform neutral SDR support library.
luaradio - A lightweight, embeddable software-defined radio framework built on LuaJIT
gqrx - Software defined radio receiver powered by GNU Radio and Qt.
sample-icecast-noaa - A sample docker setup for streaming NOAA radio from a USB RTL-SDR dongle to Icecast, so you can listen tp it as an m3u stream.
gnuradio - GNU Radio – the Free and Open Software Radio Ecosystem
ezstream - [Mirror] A streaming source client for Icecast
gr-iridium - Iridium burst detector and demodulator.
wfm-tools - Some DSP tools for FM demodulation
gr-ais - Automatic Information System decoder for shipborne position reporting for the Gnuradio project