richness | NN n/a IE n/a CSS 2
| Inherited: Yes
For aural style sheets, this sets the brightness (stridency) of the voice used in text-to-speech rendering of the element.
CSS Syntax
    richness: number
Value
A positive floating-point number to represent how strident the voice sounds. A value of 50 is normal. Lower values produce a softer, mellower voice; higher values produce a louder, more forceful voice.
Initial Value
50
Applies To
All elements.