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Audio defaultPlaybackRate Property

< Audio Object

Example

Set the audio to slow motion by default:

document.getElementById("myAudio").defaultPlaybackRate = 0.5;
Try it Yourself »

Definition and Usage

The defaultPlaybackRate property sets or returns the default playback speed of the audio.

Setting this property will only change the default playback speed, not the current. To change the current playback speed, use the playbackRate property.

Browser Support

Property
defaultPlaybackRate Yes Yes Yes Not supported Yes

Syntax

Return the defaultPlaybackRate property:

audioObject.defaultPlaybackRate

Set the defaultPlaybackRate property:

audioObject.defaultPlaybackRate=number

Property Values

Value Description
number Indicates the default playback speed of the audio.
Example values:
  • 1.0 is normal speed
  • 0.5 is half speed (slower)
  • 2.0 is double speed (faster)
  • -1.0 is backwards, normal speed
  • -0.5 is backwards, half speed

Note: The value 0.0 is invalid and throws a NOT_SUPPORTED_ERR exception

Technical Details

Return Value: A Number, representing the default playback speed
Default Value: 1.0

More Examples

Example

Set the audio to play faster by default:

document.getElementById("myAudio").defaultPlaybackRate = 2;
Try it Yourself »
< Audio Object