The voice-volume property allows authors to control the amplitude of the audio waveform generated by the speech synthesizer, and is also used to adjust the relative volume level of audio cues within the aural box model of the selected element.

  • Initial valuemedium
  • Applies toAll elements
  • InheritedYes
  • MediaSpeech
  • Computed value'silent', or a keyword value and optionally also a decibel offset (if not zero)
  • AnimatableNo
  • CSS VersionCSS3
  • JavaScript
Formal syntax: silent | [[x-soft | soft | medium | loud | x-loud] || <decibel>] 

voice-volume: silent;
voice-volume: [value];
  • <decibel>A number immediately followed by "dB" (decibel unit).
  • silentSpecifies that no sound is generated (the text is read "silently").
  • x-softThe keyword 'x-soft' maps to the user's minimum audible volume level
  • softThe keyword 'soft' maps to intermediary values
  • mediumThe keyword 'medium' maps to the user's preferred volume level
  • loudThe keyword 'loud' maps to intermediary values
  • x-loudThe keyword 'x-loud' maps to the user's maximum tolerable volume level
  • inherit
.class {
   voice-volume: loud; 

Last updated on 23rd March 2014 By Rene Spronk

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