I have a computer with a separate audio and headphone jack, so I got a splitter so I could use my Apple wired Earbuds. My friends told me my mic was making a beeping noise, so I turned on audio monitoring, and it's a repetitive beeping/thumping sound. Sometimes, the issue will resolve by itself for no reason at all, and my mic will work completely as normal. I have checked all cable connections, the headphones work with other devices, and I have identified the audio splitter is not causing the issue.
Edit: It works fine with independent headphones and mic. But they are in really old condition (why I'd rather use my apple earbuds )