Plugin request: polar stereo demodulation
The current sporadic-E season brought many FM stations on the OIRT FM band, some of them broadcasting stereo using polar modulation. Is anyone interested in making a SDR# plugin for demodulating those signals? I could provide some sample recordings for testing.
Brief information regarding the polar stereo modulation: https://en.wikipedia.org/wiki/FM_broadcast_band#OIRT_bandplan
Someone on this group mentioned that Gqrx already has this implemented: https://groups.io/g/airspy/message/31222
This should be the code: https://github.com/csete/gqrx/blob/b67ff6737b95f7ddcca78821e76d21142677a841/src/dsp/stereo_demod.cpp
So I'm hoping it's not that difficult to take the MPX stream and run it through a similar demodulator.