What is different here?
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Only 1 executable 'fm_process'
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Demod code in separate C file
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This behaves like rtl_fm except the ouptut audio is sent out via TCP as in rtl_tcp instead of piping to aplay/play
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This allows connecting a simple program to that socket which can play the audio
* Once audio is sent this way, it's easier to modify the program to output current frequency, and various other debug info * Also audio can be sent over the network to be listened to remotely. -
Various python scripts include to play/save audio to file
* Startup fm_process just like rtl_fm * Either before or after start fmplay.py * Note: PyAudio required * Note: This is set up for mono 16-bit audio @ 32khz
For more information on original code, please see: http://sdr.osmocom.org/trac/wiki/rtl-sdr