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.

The setVelocity() method of the PannerNode Interface defines the velocity vector of the audio source — how fast it is moving and in what direction.

This method was removed from the specification because of gaps in its design and implementation problems.

The velocity relative to the listener is used to control the pitch change needed to conform with the Doppler effect due to the relative speed.

As the vector controls both the direction of travel and its velocity, the three parameters x, y and z are expressed in meters per second. The default value of the velocity vector is (0, 0, 0).


setVelocity(x, y, z)



The x value of the panner's velocity vector.


The y value of the panner's velocity vector.


The z value of the panner's velocity vector.

Return value

None (undefined).


See BaseAudioContext.createPanner() for example code.


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Browser compatibility

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See also