Karaokize a song (mp3)

The technique to minimize the human voice and remain the music voice of a mp3, we can use Audacity (audacity.sourceforge.net).

1. Click the "down" triangle to open the menu.
2. "Split Stereo track"
3. "Mono" both track
4. Select and invert one of the track ("Effect" -> "Invert")
5. Save the MP3

Step is shown in the below picture:


[ mp3 去人聲 audacity ]

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