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Adding equalizer to the Symbian C++ audio player

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Symbian has several audio enhancement APIs that can be used to modify the audio experience. One of them is the CAudioEqualizerUtility API. This snippet can be self-signed.

Article Metadata
Code ExampleTested with
Devices(s): Nokia N95
CompatibilityPlatform Security
Signing Required: Self-Signed
Capabilities: None
Keywords: CAudioEqualizerUtility, TEfAudioEqualizerUtilityPreset
Created: User:Technical writer 1 (09 Oct 2008)
Last edited: lpvalente (23 Sep 2014)



The audio player must be fully constructed before constructing the instance of the API. This can be done with the following lines of code:

 iMdaAudioPlayerUtility = CMdaAudioPlayerUtility::NewFilePlayerL(aFileName,

MMP file

The following capabilities and libraries are required:

LIBRARY AudioEqualizerUtility.lib  
Header audioequalizerutility.h

Source file

First you need to construct the equalizer instance:

 iAudioEqualizerUtility = CAudioEqualizerUtility::NewL(*iMdaAudioPlayerUtility);

Use the following code to query equalizer presets:

 TArray<TEfAudioEqualizerUtilityPreset> allPresets = 

Use the following code to apply an equalizer preset:

// where preSetIndex is 0 to (iAudioEqualizerUtility->Presets().Count() – 1)

Test application

See also

This page was last modified on 23 September 2014, at 19:55.
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