[DirectX 6 Programmer's Reference] Gain (100%)

DirectX Foundation > DirectInput > DirectInput Essentials > Force Feedback

[DirectX 7 Programmer's Reference] Gain (100%)

Microsoft DirectX 7.0 > DirectInput > DirectInput Essentials > Force Feedback

[DirectX 8.1 C/C++ Programmer's Reference] Gain (80.6818181818182%)

DirectX 8.1 (C++) > DirectInput > Using DirectInput > Force Feedback

[DirectX 8.1 Visual Basic Programmer's Reference] Gain (80.6818181818182%)

DirectX 8.1 (Visual Basic) > DirectInput > Using DirectInput > Force Feedback

[DirectX October 2006 Documentation] Gain (77.2727272727273%)

DirectX Input > DirectInput > Programming Guide > Force Feedback

[DirectX October 2006 Documentation] Gain (42.2077922077922%)

DirectX SDK > Introducing DirectX 9.0 > Namespaces > Microsoft.DirectX.DirectSound > Structures > EffectsDistortion > Properties

[DirectX October 2006 Documentation] Gain (41.0714285714286%)

DirectX SDK > Introducing DirectX 9.0 > Namespaces > Microsoft.DirectX.DirectSound > Structures > EffectsCompressor > Properties

[DirectX October 2006 Documentation] Gain (39.9350649350649%)

DirectX SDK > Introducing DirectX 9.0 > Namespaces > Microsoft.DirectX.DirectSound > Structures > EffectsParamEq > Properties

[DirectX October 2006 Documentation] Gain (38.7987012987013%)

DirectX SDK > Introducing DirectX 9.0 > Namespaces > Microsoft.DirectX.DirectInput > Structures > Effect > Properties