Audio issue

I'm using Realtek HD and i'm having an issue when i record videos. When ever i play my recorded videos in any media program the sound has lots of Echo is there a way to remove that echo i didn't adjust with any of the audio settings and when i play games, movie or music the sound is fine there isn't any echo but when i record videos there is echo and it happens regardless if i have my microphone on or off and i'm using a headset not speakers.

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