speech-rate | NN n/a IE n/a CSS 2
| Inherited: Yes
For aural style sheets, this sets the number of words per minute of the text-to-speech output.
CSS Syntax
    speech-rate: wordsPerSecond | speedConstant
Value
A wordsPerSecond value is any positive floating-point number with no unit appended. Alternatively, you can use any of the following constant values.

Value | Meaning
--- | ---
x-slow | 80 words per minute
slow | 120 words per minute
medium | 180-200 words per minute
fast | 300 words per minute
x-fast | 500 words per minute
slower | Current rate minus 40 words per minute
faster | Current rate plus 40 words per minute

Initial Value
medium
Applies To
All elements.