Q. Can I remove vocals from a song I've imported into Apple's GarageBand?
[Related Entries : Audio Editors , Change Import Tempo , Change Tempo Increments , Change Tempo , Import Formats , Import From Itunes , Import ITS , Improve Singing , Orange To Purple , Remove Instrument ]
A. Not perfectly, no. There is a technique of adding an inverted left channel to the right channel (i.e. subtracting one from the other) which will cancel out anything set to appear dead center in the stereo field (in essence a mono recording ... equally recorded on both channels). Generally lead vocals are set to the center so this technique will hide or reduce them, however other instruments are often centered and will be removed or decreased as well (the bass and kick drum, for example, are usually placed dead center). This process will also affect the rest of the music, and is really just useful for seeing how your voice sounds in a particular song in a particular key.
A slick hardware approach is to use a balanced cable on unbalanced output. For instance using a balanced XLR to 1/8” cable, plugging my computer’s out into my mixer’s in sends an unbalanced stereo signal through the cable instead of a balanced mono signal. The inverted signal cancels out the center channel.
NOTE: With all that said, using any of these techniques for other than your personal amusement will likely be an infringement on someone’s copyright and could get you sued for damages.
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GarageBand from Apple Computer uses audio loops and MIDI loops in Apple Loops format. It can work with Audio Units plug-ins. Apple Macintosh Compatible FireWire and USB interfaces can be used to connect Audio and MIDI instruments to your Mac, and be recorded into GarageBand.
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