SpeechSynthesisUtterance also inherits properties from its parent interface, EventTarget. SpeechSynthesisUtterance.lang Gets and sets the language of the utterance. SpeechSynthesisUtterance.pitch Gets and sets the pitch at which the utterance will be spoken at. SpeechSynthesisUtterance.rate Gets and sets the speed at which the utterance will be spoken at. SpeechSynthesisUtterance.text Gets and set