EffectsParamEq Structure (Microsoft.DirectX.DirectSound)

  • Article

How Do I...?

  • Use Effect Parameters

Contains parameters for a parametric equalizer effect.

Definition

Visual Basic Public Structure EffectsParamEq
C# public struct EffectsParamEq 
C++ public value class EffectsParamEq sealed 
JScript In JScript, you can use structures, but you cannot define your own.

Members Table

The following table lists the members exposed by the object.

Methods

Method Description
EffectsParamEq Initializes a new instance of the EffectsParamEq structure.
ToString Obtains a string representation of the current instance.

Properties

Property Description
Bandwidth Retrieves and sets the bandwidth, in semitones, of the EffectsParamEq structure.
Center Retrieves and sets the center frequency, in hertz, of the EffectsParamEq structure.
Gain Retrieves and sets the gain, of the EffectsParamEq structure.

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);

Structure Information

Namespace Microsoft.DirectX.DirectSound
Assembly Microsoft.DirectX.DirectSound (microsoft.directx.directsound.dll)
Strong Name Microsoft.DirectX.DirectSound,  Version=1.0.900.0,  Culture=neutral,  PublicKeyToken=d3231b57b74a1492

See Also