https://www.google.com.au/search?q=voice+recognition&biw=1280&bih=578&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiX-63mxsnLAhWlMqYKHRWKA78Q_AUIBigB#imgrc=Q4eirSgLL1TndM%3A