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.