EffectsCompressor.Predelay Property (Microsoft.DirectX.DirectSound)

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How Do I...?

  • Use Effect Parameters

Retrieves and sets the time after Threshold is reached before attack phase is started, in milliseconds, in the EffectsCompressor structure.

Definition

Visual Basic Public Property Predelay As Single
C# public float Predelay { get; set; }
C++ public:
property float Predelay {
        float get();
        void set(float value);
}
JScript public function get Predelay() : float
public function set Predelay(float);

Property Value

System.Single
Time after Threshold is reached before attack phase is started, in milliseconds.

This property is read/write. 

Remarks

Can range from CompressorEffect.PredelayMin to CompressorEffect.PredelayMax.

The default value is 4 ms.

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);