|Microsoft DirectX 9.0|
The AudioFX sample shows how to use
Source: (SDK root)\Samples\C++\DirectMusic\AudioFX
Executable: (SDK root)\Samples\C++\DirectMusic\Bin
A default sound file is loaded when the application is run. You can load a different one by clicking Open File.
At first, no effects are enabled. Click Play to hear the sound without effects.
Click Stop to stop the buffer. Apply one or more effects by selecting checkboxes in the Enable column. Play the sound again.
To adjust parameters for an effect, select an option button in the Adjust column and change the values in the frame on the right side of the window. This can be done regardless of whether the sound is playing and regardless of whether the effect has been applied yet.
The application implements a CSoundFXManager class to manage effects. In the CSoundFXManager::Initialize method, it retrieves an IDirectSoundBuffer8 interface from the audiopath. This interface is used to set effects on the buffer in the CSoundFXManager::ActivateFX method. Effect parameters are set in the OnEffectChanged function in response to messages from the interface.