EchoEffect Class (Microsoft.DirectX.DirectSound)
Represents a Microsoft DirectSound effects object used to set and retrieve effect parameters on a SecondaryBuffer object that supports echo.
Visual Basic Public Class EchoEffect
C# public class EchoEffect : MarshalByRefObject, IDisposable C++ public ref class EchoEffect : MarshalByRefObject, IDisposable JScript public class EchoEffect 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 EchoEffect object is finalized and collected by the garbage collector of the Microsoft .NET common language runtime.
Field Description FeedbackMax Retrieves the maximum value for the EffectsEcho.Feedback property. FeedbackMin Retrieves the minimum value for the EffectsEcho.Feedback property. LeftDelayMax Retrieves the maximum value for the EffectsEcho.LeftDelay property. LeftDelayMin Retrieves the minimum value for the EffectsEcho.LeftDelay property. PanDelayMax Retrieves the maximum value for the EffectsEcho.PanDelay property. PanDelayMin Retrieves the minimum value for the EffectsEcho.PanDelay property. RightDelayMax Retrieves the maximum value for the EffectsEcho.RightDelay property. RightDelayMin Retrieves the minimum value for the EffectsEcho.RightDelay property. WetDryMixMax Retrieves the maximum value for the EffectsEcho.WetDryMix property. WetDryMixMin Retrieves the minimum value for the EffectsEcho.WetDryMix property.
Method Description Dispose Immediately releases the unmanaged resources used by the EchoEffect object. EchoEffect Initializes a new instance of the EchoEffect class. This method supports the .NET Framework Infrastructure and is not intended to be used directly in your code. Equals Returns a value that indicates whether the current instance is equal to a specified object. Finalize Allows the EchoEffect 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. raise_Disposing Raises the EchoEffect.Disposing event when called from within a derived class.
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