And because they take time to produce, you won't find a karaoke version of a newly released hit. But with Karaoke Studio, you don't have to wait for anyone. The DeVocalizer works on MP3 files as well. The only requirements are that the original recording be in stereo with the artist's voice coming from the center image. The level of success regarding vocal removal depends primarily on how the recording was made.
Results vary from total vocal removal to a slight residual echo.
However even with an echo, your singing along usually masks it out or it's perceived as a reverb effect. The echo also makes for a slightly audible sing-along guide that can help improve your performance style and phrasing, or at the very least assist you in mimicking the original artist's interpretation of the song. For the technologically minded, Karaoke Studio removes the vocals by a process known as destructive interference. You may have seen or heard of other products that use this method such as electronic car mufflers and headphones that cancel out airplane and construction noise. By putting one of the left or right channels out of phase from the other, any center image sound that is on both channels is cancelled out.