? ?? ??? ??? ?? ?? ?? ?? ? ?? ?? ? ??? ?? ?? ?? ?? ??? ???? ?? ??? ???? website ??? ???? ?? ? ??? ????. To get the quasi-karaoke (mono) track, the remaining channel of the first audio is subtracted from the ideal channel. The Sega Saturn also provides a "mute vocals" attribute that relies on a similar theory and can be able to adjust the pitch on

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