![]() One instance is used on the stereo ‘source’ track, and another on a duplicate. If your DAW doesn’t include a Mid-Sides processor plug-in, investigate Brainworx’s freebie bx_solo. You can do this entirely manually, by inverting the polarity of the left or right channel of your stereo file, but a more elegant approach is to convert the left-right (L-R) stereo file of your ‘source’ mix into Mid-Sides (M-S) stereo using a plug-in such as the freeware Brainworx bx_solo ( I’ll use that here. Underpinning it is the principle of phase-cancellation, as used by lots of free ‘vocal-removal’ plug-ins. The aim is to remove the vocal, leaving behind a usable backing track. The first approach gives us separate control over any elements panned to the centre - that’s where the main lead vocal sound typically sits, usually alongside elements such as the bass, kick, snare and hi-hat - and those paned off-centre. ![]() You’ll find audio files to accompany the various examples on the SOS web site (see box). I’ll start with the simplest approaches, using tools that are free/bundled with your DAW, before demonstrating the worth of increasingly sophisticated and costly software. Your chances of success depend on several factors, including: the nature of the source, what files and versions of the track are available how much money you’re prepared to invest, how much time it’s worth spending, and what quality of result is acceptable. In these pages, I’ll explain the tools and techniques you can use to do this as well as is currently possible. Most SOS readers understand that doing this anywhere near perfectly is impossible, but sometimes it’s possible to separate things to a useful extent. Whether it be to sample parts for a remix, mashup or new composition, or simply to create a rough karaoke-style backing track, people often ask how they can remove or isolate vocals from stereo audio files such as you’d find on a CD. Have you ever wondered how to separate a vocal or the instrumental backing from a stereo mix? We find out what’s possible - and what isn’t.
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