VLC(J) change audio pitch without affecting speed.

[konglie]

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I'm currently developing simple video player with VLCJ. Can anyone please point me some clue about changing audio pitch with it? is it possible?

I've searching through but cannot find the right keyword, what i need is some control (method/function) of vlcj (or any) to increase sound so it sounds like kids voice, or lower down so make like a very old man sound.

I don't really understand about the name is audio/video, but what i need is something audio effect on vlc (by disabling time-strech) when increase/decrease play speed. The sound changes to a kid or oldman, but the problem using this method is that the speed was affected. Is this possible, to get the sound effect without affecting speed?

Thanks in advance.