num pitch

Source 

@DomName('SpeechSynthesisUtterance.pitch')
@DocsEditable()
num get pitch =>
    _blink.BlinkSpeechSynthesisUtterance.instance.pitch_Getter_(this);
void pitch=(num value)

Source 

@DomName('SpeechSynthesisUtterance.pitch')
@DocsEditable()
set pitch(num value) =>
    _blink.BlinkSpeechSynthesisUtterance.instance.pitch_Setter_(this, value);