Microsoft DirectX 9.0 SDK Update (October 2004)

EffectsCompressor.Threshold Property

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Note: This documentation is preliminary and is subject to change.
How Do I...?

Retrieves and sets the point at which compression begins, in the EffectsCompressor structure.

Definition

Visual Basic .NET Public Property Threshold As Single
C# public float Threshold { get; set; }
Managed C++ public: __property float get_Threshold();
public: __property void set_Threshold(float);
JScript .NET public function get Threshold() : float
public function set Threshold(float);

Property Value

System.Single . Point at which compression begins.

This property is read/write. 

Remarks

Can range from CompressorEffect.ThresholdMin to CompressorEffect.ThresholdMax.

The default value is -20 dB.

How Do I...?

Use Effect Parameters

This C# example demonstrates how to use the parameters of an effect object from a SecondaryBuffer object.

The buffer object in this code snippet is assumed to be the SecondaryBuffer from the code in Add Effects to a SecondaryBuffer Object.

              [C#]
              
//Retrieve the effects object and //the effect param sturctures and edit parameters. EchoEffect echo = (EchoEffect)buffer.GetEffects(0); EffectsEcho echo_params = echo.AllParameters; echo_params.LeftDelay = 250.0f; echo_params.RightDelay = 100.0f; echo_params.Feedback = 85.0f; echo_params.PanDelay = 1; echo_params.WetDryMix = 50.0f; ChorusEffect chorus = (ChorusEffect)buffer.GetEffects(1); EffectsChorus chorus_params = chorus.AllParameters; chorus_params.Delay = 15.0f; chorus_params.Depth = ChorusEffect.DepthMax; chorus_params.Phase = ChorusEffect.PhaseNegative90; chorus_params.Waveform = ChorusEffect.WaveSin; chorus_params.WetDryMix = 50.0f; //Set the new parameters and play the buffer. echo.AllParameters = echo_params; chorus.AllParameters = chorus_params; buffer.Play(0,BufferPlayFlags.Default);


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