[MSDN Library June 1998] Doppler Factor (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] Doppler Shift (70.2857142857143%)

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