<div>Hi guys,</div><div><br></div><div><includetail><div style=""><div style="color: rgb(0, 0, 0); position: relative;">>> I mean I don't need to record played audio, but it is recored into the mic.</div><div style="color: rgb(0, 0, 0); position: relative;">>> I can confirm that ALSA loopback is set to false state, and the sink monitor<br>>> is not used.<br>> You probably need echo cancellation<br><br></div><div style="position: relative;"><div style="position: relative;">The output audio is not sent to the speakers, but from the headphones, </div><div style="position: relative;">and the mic cannot pick up the played audio from the air, </div><div style="position: relative;">so I don't think it's an echo issue.</div><div style="position: relative;"><br></div><div style="position: relative;">I am using a four-section headset, and the input and output are on the same audio port. </div><div style="position: relative;">Is it possible that there is signal interference in the input and output?</div><div style="position: relative;"><br></div><div style="position: relative;">Thanks,</div><div style="position: relative;"><br></div><div style="position: relative;">Chengyi</div></div></div></includetail></div>