Microphone freezes on voice capture failure

[plusminuschirag]

Issue is arising since the microphone is not able to take the input and when it fails to take the input the window just freezes and fails to release the control.
I would also like to add a feature of automatic closing of window on abrupt exit otherwise whole environment needs to restarted again.

I would like to work on this.

[plusminuschirag]

I have fixed this problem. But right now i am working with @nikhilmehta011 on changing it GUI to PyQT5. Please mark that closed when we do the pull request and I hope points related to this issue will be credited to the mentor and myself.