Ran fm_receiver(examples with gr-limesdr) based on GNU Radio, no sound

Projects LimeSDR
1

hello, I ran fm_receiver(as examples in gr-limesdr) in GNU Radio. There seems to be noisy, no exact fm sound. Does anybody help to find the reasons? Thanks so much!

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2

You can try to remove the DC component, using the DC blocking filter as the first iteration.

3

thanks! what is the DC component??