| richness | NN n/a IE n/a CSS 2 |
|   | Inherited: Yes |
For aural style sheets, 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. | |