?? ???? ??? ??? ??? ????? ??? ??? ????? ??? ??? ??. ?? ???? ?? ??? ???? ???? ????? ?? ????? ? To get the quasi-karaoke (mono) keep track of, the remaining channel of the original audio is subtracted from the best channel. The Sega Saturn also includes a "mute vocals" feature that relies on the exact same principle and can also be equipped to adju

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