#2
I should add that the noises only appear only on a few seconds after switching to any radio channel (E13). However the noises sometimes come and go. Is there any confirmation?
:?

#4
Dear Prog, thank you very much for your reply. Yes, Same without audio processor. My audio processor is Sonic Focus (Intel Audio Studio).However when I switch it off, the noises will reduce little bit. How can I change the audio codec? Can you please explain.

Thank you again.
:D