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Class Virtualizer

  • public class Virtualizer
    extends AudioEffect
    An audio virtualizer is a general name for an effect to spatialize audio channels. The exact behavior of this effect is dependent on the number of audio input channels and the types and number of audio output channels of the device. For example, in the case of a stereo input and stereo headphone output, a stereo widening effect is used when this effect is turned on.

    An application creates a Virtualizer object to instantiate and control a virtualizer engine in the audio framework.

    The methods, parameter types and units exposed by the Virtualizer implementation are directly mapping those defined by the OpenSL ES 1.0.1 Specification ( for the SLVirtualizerItf interface. Please refer to this specification for more details.

    To attach the Virtualizer to a particular AudioTrack or MediaPlayer, specify the audio session ID of this AudioTrack or MediaPlayer when constructing the Virtualizer.

    NOTE: attaching a Virtualizer to the global audio output mix by use of session 0 is deprecated.

    See MediaPlayer.getAudioSessionId() for details on audio sessions.

    See AudioEffect class for more details on controlling audio effects.


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