Batch Parameters for 3D Buffers

[The feature associated with this page, DirectSound, is a legacy feature. It has been superseded by WASAPI and Audio Graphs. Media Casting have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Media Casting instead of DirectSound, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Applications can retrieve or set a 3D sound buffer's parameters individually or in batches. If the sound source is moving, you might want to set multiple parameters such as position, orientation, and velocity all at once. You can do so by calling IDirectSound3DBuffer8::GetAllParameters to retrieve the current parameters, changing the appropriate parameters in the DS3DBUFFER structure, and passing the structure back to IDirectSound3DBuffer8::SetAllParameters.

Parameter changes can also be made more efficiently by flagging them as deferred and then executing them all at once. For more information, see Deferred Settings.