Appendix > APPENDIX B - Guidelines for DirectShow configuration through K-Lite

Remarks

Sets parameters related to the Interactive 3D Level 2 Reverb effect. The current parameters for the chosen effect can be retrieved using the Effects.DirectXEffectParamsGet method.

DirectX effects requires the availability of DirectX version 8 or higher on the target system and can be applied only if the IsDirectX8Available method returns TRUE.

See the How to apply special effects to a playing sound section for further details.

Syntax

[Visual Basic]

Public Function DirectXEffectParamsSet (

nPlayerIndex as Int16,

ByRef fx as Microsoft.DirectX.DirectSound.EffectsInteractive3DLevel2Reverb

) as enumErrorCodes

[C#]

public enumErrorCodes DirectXEffectParamsSet (

Int16 nPlayerIndex,

ref Microsoft.DirectX.DirectSound.EffectsInteractive3DLevel2Reverb fx

);

[C++]

public: enumErrorCodes DirectXEffectParamsSet (

Int16 nPlayerIndex,

Microsoft::DirectX::DirectSound::EffectsInteractive3DLevel2Reverb __gc *fx

);

Parameter

Description

nPlayerIndex

Number representing the zero-based index of the involved player

Reference to the effect structure containing parameters to apply.

Property	Meaning

DecayHfRatio	Retrieves and sets the ratio of the decay time at high frequencies to the decay time at low frequencies. Can range from Interactive3DLevel2ReverbEffect.DecayHfRatioMin to Interactive3DLevel2ReverbEffect.DecayHfRatioMax. The default value is Interactive3DLevel2ReverbEffect.DecayHfRatioDefault or 0.83.
DecayTime	Retrieves and sets the decay time expressed in seconds. Can range from Interactive3DLevel2ReverbEffect.DecayTimeMin to Interactive3DLevel2ReverbEffect.DecayTimeMax. The default value is Interactive3DLevel2ReverbEffect.DecayTimeDefault or 1.49 seconds.
Density	Retrieves and sets the modal density in the late reverberation decay expressed in percent. Can range from Interactive3DLevel2ReverbEffect.DensityMin to Interactive3DLevel2ReverbEffect.DensityMax. The default value is Interactive3DLevel2ReverbEffect.DensityDefault or 100 percent.
Diffusion	Retrieves and sets the echo density in the late reverberation decay expressed in percent. Can range from Interactive3DLevel2ReverbEffect.DiffusionyMin to Interactive3DLevel2ReverbEffect.DiffusionMax. The default value is Interactive3DLevel2ReverbEffect.DiffusionDefault or 100 percent.
HfReference	Retrieves and sets the reference high frequency expressed in hertz. Can range from Interactive3DLevel2ReverbEffect.HfReferenceyMin to Interactive3DLevel2ReverbEffect.HfReferenceMax. The default value is Interactive3DLevel2ReverbEffect.HfReferenceDefault or 5000.0 Hz.
Reflections	Retrieves and sets the attenuation of early reflections relative to Room expressed in millibels (mB). Can range from Interactive3DLevel2ReverbEffect.ReflectionsMin to Interactive3DLevel2ReverbEffect.ReflectionsMax. The default value is Interactive3DLevel2ReverbEffect.ReflectionsDefault or -2602 mB.
ReflectionsDelay	Retrieves and sets the delay time of the first reflection relative to the direct path expressed in seconds. Can range from Interactive3DLevel2ReverbEffect.ReflectionsDelayMin to Interactive3DLevel2ReverbEffect.ReflectionsDelayMax. The default value is Interactive3DLevel2ReverbEffect.ReflectionsDelayDefault or 0.007 seconds.
Reverb	Retrieves and sets the attenuation of late reverberation relative to Room expressed in millibels (mB). Can range from Interactive3DLevel2ReverbEffect.ReverbMin to Interactive3DLevel2ReverbEffect.ReverbMax. The default value is Interactive3DLevel2ReverbEffect.ReverbDefault or -200 mB.
ReverbDelay	Retrieves and sets the time limit between the early reflections and the late reverberation relative to the time of the first reflection expressed in seconds. Can range from Interactive3DLevel2ReverbEffect.ReverbDelayMin to Interactive3DLevel2ReverbEffect.ReverbDelayMax. The default value is Interactive3DLevel2ReverbEffect.ReverbDelayDefault or 0.011 seconds.
Room	Retrieves and sets the attenuation of the room effect expressed in millibels (mB). Can range from Interactive3DLevel2ReverbEffect.RoomMin to Interactive3DLevel2ReverbEffect.RoomMax. The default value is Interactive3DLevel2ReverbEffect.RoomDefault or -1000 mB.
RoomHf	Retrieves and sets the attenuation of the room high-frequency effect expressed in millibels (mB). Can range from Interactive3DLevel2ReverbEffect.RoomHfMin to Interactive3DLevel2ReverbEffect.RoomHfMax. The default value is Interactive3DLevel2ReverbEffect.RoomHfDefault or -100 mB.
RoomRolloffFactor	Retrieves and sets the rolloff factor for the reflected signals. Can range from Interactive3DLevel2ReverbEffect.RoomRolloffFactorMin to Interactive3DLevel2ReverbEffect.RoomRolloffFactorMax. The default value is Interactive3DLevel2ReverbEffect.RoomRolloffFactorDefault or 0.0.

Return value

Value	Meaning

Negative value	An error occurred (see the LastError property for further error details) Note that if you should fill the fx structure with values out of range, you could get an exception of type ArgumentException
enumErrorCodes.NOERROR (0)	The method call was successful.