Test that the default rate for a voice should be such that it is experienced
as a normal speaking rate for the voice when reading aloud text.
Speech Synthesis Markup Language is part of a
larger set of markup specifications
for voice browsers developed through the open processes of the World
Wide Web Consortium. It is designed to provide a rich, XML-based markup
language for assisting the generation of synthetic speech in Web and
other applications. The essential role of the markup language is to
give authors of synthesizable content a standard way to control aspects
of speech output such as pronunciation, volume, pitch, rate, etc. across
different synthesis-capable platforms.