I'm trying to set GNU Radio as an audio processor for a little community radio in my town.
I've already installed GNU Radio and it's working, but I'm not a sound engineer, so I need some help.
This is my installation:
MIC & Music Player  ----> Mixer ----> GNU Radio ---> FM Emitter
I need to know what filters and modules to set to improve sound in this workflow.
Could any of you give me an outline of what GNU Radio modules to use?
You can simply use alsa or pulse audio to configure a "virtual" capture device, use that as the device name in the GNU Radio audio sink, FM modulate the audio signal and send the result to your RF hardware. That's pretty much a typical GNU Radio use case. You might want to have a look at the gr-analog examples :)
GNU Radio on Community radios