This property specifies the richness, or brightness, of the speaking voice. Higher values of richness/brightness have rougher waveforms and tend to carry better than lower richness values with smoother waveforms.

body { richness: 75 } text
Possible Values
inherit: Explicitly sets the value of this property to that of the parent.
[number]: This is an integer value between 0 and 100 representing the brightness of the voice. Higher values indicate a brighter voice while lower values create a softer voice.

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