/* spec information about this property
name= voice-family
css1= NA
css2= http://www.w3.org/TR/2008/REC-CSS2-20080411/aural.html#propdef-voice-family
css21= http://www.w3.org/TR/2011/REC-CSS2-20110607/aural.html#propdef-voice-family
css3= http://www.w3.org/TR/2012/CR-css3-speech-20120320/#voice-family
*/