This example is a mono Wideband FM broadcast radio receiver. It can be used to listen to FM Broadcast stations. It uses the RTL-SDR as an SDR source, plays audio with PulseAudio, and shows two real-time plots: the demodulated FM spectrum and the L+R channel audio spectrum.
This mono Wideband FM broadcast demodulator composition is available in LuaRadio as the WBFMMonoDemodulator block.
Running this example in a headless environment will inhibit plotting and record audio to the WAV file wbfm_mono.wav.