Why do I hear an echo when I play a video recording where computer audio is recorded?

While recording computer audio on Vmaker chrome plug-in, you might hear an echo after completing the recording and playing back the video. This is normal behavior.
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To avoid the echo while recording, it is recommended to use a headphone and then select computer audio recording option. This way, the feedback audio input to your PC's inbuilt microphone can be avoided thereby preventing the echo.