wfm-tools VS luaradio

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

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.

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.

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.

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.