EqualizerControl is an audio EffectControl for
manipulating the equalization settings of a Player(s).
Equalizers (EQ) are usually used for two reasons: to compensate an unideal
frequency response of a system to make it sound more natural or to create
intentionally some unnatural coloring to the sound to create an effect. The
equalizer in this API serves both of these purposes.
The S60 AMMS implementation of EqualizerControl is
currently based on a 5-band equalizer. For more information about the differences between
the API and the S60 implementation, see Advanced
Multimedia Supplements API (JSR-234): Implementation notes.