Splitter microphone not working

[KTK27]

Hello ,

I have bought a splitter cable and a USB to audio converter with microphone and speaker but when I plug in the splitter cable to my computer the speakers work not the microphone , when I try fixing it their are sometimes sounds that sound like dialup and high frequency sounds that may give up a headache , and I am using a earphone which supports both microphone and audio but when I look at the splitter cable their is a line missing on the jack . is their any way to fix this?

 

for those who are curious why I have a splitter cable and a USB to headphone and microphone jack because my computer doesn't have a headphone jack . 

[RainColt]

OK took me a little bit to process. So you have a USB to Headphone/microphone, with a splitter male headphone/mic to female, which you plug your head phones into.

So i assume the splitter cable has colours to indicate headphones(Green) and mic(red) 

[RainColt]

36 minutes ago, KTK27 said:

the splitter cable their is a line missing on the jack . is their any way to fix this?

Thats fine they are TRS inputs, to TRRS its how it should be