Description
Requests that the synthesized voice should sound like a person of the given age in years. It should be set to an integer value, for example age="50" or age="3".
VoiceXML browsers are not obligated to fully implement all speech markup attributes, however, a compliant browser must silently ignore any it does not support, and should make its best efforts to map any unimplemented mark-up to something similar that is supported.