Audio defaultPlaybackRate Property

Example

Set the audio to slow motion by default:

document.getElementById("myAudio").defaultPlaybackRate = 0.5;

Description

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

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