[MSDN Library June 1998] Listener Position and Velocity (100%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > DirectX 5 > DirectX Foundation > DirectSound > DirectSound Essentials > DirectSound 3-D Listeners

[MSDN Library June 1998] Listener Orientation (85.8333333333333%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > DirectX 5 > DirectX Foundation > DirectSound > DirectSound Essentials > DirectSound 3-D Listeners