ParamEqEffect Class (Microsoft.DirectX.DirectSound)
How Do I...?
- Add Effects to a SecondaryBuffer Object
Represents a Microsoft DirectSound effects object used to set and retrieve effect parameters on a SecondaryBuffer object that supports parametric equalizer effects.
Visual Basic Public Class ParamEqEffect
C# public class ParamEqEffect : MarshalByRefObject, IDisposable C++ public ref class ParamEqEffect : MarshalByRefObject, IDisposable JScript public class ParamEqEffect extends MarshalByRefObject implements IDisposable
The following table lists the members exposed by the object.
Event Description Disposing Occurs when the Dispose method is called or when the ParamEqEffect object is finalized and collected by the garbage collector of the Microsoft .NET common language runtime.
Field Description BandwidthMax Retrives the maximum value for the EffectsParamEq.Bandwidth property. BandwidthMin Retrives the minimum value for the EffectsParamEq.Bandwidth property. CenterMax Retrives the maximum value for the EffectsParamEq.Center property. CenterMin Retrives the minimum value for the EffectsParamEq.Center property. GainMax Retrieves the maximum value for the EffectsParamEq.Gain property. GainMin Retrieves the minimum value for the EffectsParamEq.Gain property.
Method Description Dispose Immediately releases the unmanaged resources used by the ParamEqEffect object. Equals Returns a value that indicates whether the current instance is equal to a specified object. Finalize Allows the ParamEqEffect object to free resources before it is destroyed by the garbage collector. GetHashCode Returns the hash code for the current instance. GetObjectByValue This member supports the infrastructure for Microsoft DirectX 9.0 for Managed Code and is not intended to be used directly from your code. op_Equality Compares the current instance of a class to another instance to determine whether they are the same. op_Inequality Compares the current instance of a class to another instance to determine whether they are different. ParamEqEffect Initializes a new instance of the ParamEqEffect class. This method supports the .NET Framework Infrastructure and is not intended to be used directly in your code. raise_Disposing Raises the ParamEqEffect.Disposing event when called from within a derived class.
Property Description AllParameters Retrieves or sets parametric equalizer parameters of a SecondaryBuffer object. Disposed Gets a value that indicates whether the object is disposed.
How Do I...?
Add Effects to a SecondaryBuffer Object
This C# example demonstrates how to add effect objects to a SecondaryBuffer object.
[C#] //Create and setup the sound device. Device dev = new Device(); dev.SetCooperativeLevel(this,CooperativeLevel.Normal); //Create and setup the buffer description. BufferDescription buffer_desc = new BufferDescription(); buffer_desc.ControlEffects = true; //this has to be true to use effects. buffer_desc.GlobalFocus = true; //play sound even if application loses focus. //Create and setup the buffer for playing the sound. SecondaryBuffer buffer = new SecondaryBuffer( @"C:\WINDOWS\Media\ding.wav", buffer_desc, dev); //Create an array of effects descriptions, //set the effect objects to echo and chorus and //set it in the buffer. EffectDescription effects = new EffectDescription; effects.GuidEffectClass = DSoundHelper.StandardEchoGuid; effects.GuidEffectClass = DSoundHelper.StandardChorusGuid; buffer.SetEffects(effects); //Play Buffer. buffer.Play(0,BufferPlayFlags.Default);
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