https://learn.microsoft.com/en-us/uwp/api/windows.media.audio.audionodelistener.dopplervelocity?view=winrt-28000
AudioNodeListener.DopplerVelocity Property (Windows.Media.Audio) - Windows apps | Microsoft Learn
Gets or sets a Vector3 expressing the velocity at which the listener is moving in 3D space, expressed in meters per second.
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