HTML DOM Audio defaultPlaybackRate Property

# 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

The defaultPlaybackRate property is only supported in all major browsers, except Safari.

Note: The defaultPlaybackRate property is not supported in Internet Explorer 8 and earlier versions.

## 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

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