Microsoft DirectX 9.0 SDK Update (October 2004)

EffectsParamEq.Center Property

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

Retrieves and sets the center frequency, in hertz, of the EffectsParamEq structure.

Definition

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

Property Value

System.Single . Center frequency, in hertz.

This property is read/write. 

Remarks

Can range from ParamEqEffect.CenterMin to ParamEqEffect.CenterMax.

The default value is 8000.

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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