Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Note: There is no direct replacement for this deprecated property. Instead, the general approach to controlling all aspects of audio spatialization is to use the PannerNode interface. For how-to guidance on working with spatialization in the Web Audio API, see the Web audio spatialization basics article.

The deprecated dopplerFactor property of the AudioListener interface is a double value representing the amount of pitch shift to use when rendering a doppler effect.

The dopplerFactor property's default value is 1, which is a sensible default for most situations.


A double indicating the doppler effect's pitch shift value. The value is 1 by default.


See BaseAudioContext.createPanner() for example code.

Browser compatibility

BCD tables only load in the browser

See also