????? ?? ??(????)?? ?? ?? ???? ????? ??? ?? ????? ??? ???? ?? ? ??. ??? ?? ???? ???? ??? ?? ???? ??? ???? ??????. to find the quasi-karaoke (mono) keep track of, the remaining channel of the initial audio is subtracted from the right channel. The Sega Saturn also has a "mute vocals" attribute that is based on a similar basic principle and can als

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