The richness property is used only in Aural Stylesheets.
The aural rendering of a document combines sounds and voices to go through the content of a document. Aural presentation occurs often by converting the document to plain text and then feeding this to a screen reader.
Situations and markets for listening to information could be:
The richness property specifies the richness (brightness) of the speaking voice.
|number||Default is 50. A number between 0 and 100 (the voice will "carry" more on a high value)|