What is a floating icon looks like a purple microphone and headset on Sony Xperia z3

[AC Question]

I have a floating icon that looks like a purple microphone and headphone in a circle. On every screen, including the lock screen. When tapped a lady speaks in Chinese. How can I eliminate it? It is driving me crazy

 

[B. Diddy]

Welcome to Android Central! Go to Settings>Accessibility​, and see if any of those options are turned on.