Microphone noice cancelation in ubantu

This will help to remove background noise when you record, usually in windows with Realtek audio do this job perfectly. but in ubuntu we gonna do it as follows, 

1. Open Nano editor,

        $  sudo nano /etc/pulse/default.pa

2. Now move down to any lines and add the following line to enable Noise cancellation module.

         $  load-module module-echo-cancel

3. Restart Pulse Audio for Noise Cancelling Linux System 

          $ pulseaudio -k 

          $ pulseaudio --start

4.

Set Default Sound Device