Audio filter program? For seperating sounds?

[MEANGUNS]

I would like to know what the best program would be for taking out background noises?
For example audience, turn song into a acopella, remove vocals from instruments etc?

[guns1inger]

THere are a few apps out there for removing vocals from a track, although they are very dependent on the way the track was recorded. I use vocal remover from AnalogX. It's a free directX plugin for sound forge or similar. Most of these work on the basis that many music tracks have a good seperation of instruments across the channels, but have the vocals recored evenly on both. By reversing the waveform of one channel, anything common to both is cancelled out. The catch is, if the vocals are not evenly recorded on both channels, you wont be able to remove them, or, as is more common, other things such as bass or drums are recorded evenly and disappear with the vocals.

Theoretically, if you have stripped the vocals successfully, you could use inverted versions of the stripped tracks to remove everything but the vocals from the original.

This will not work for mon tracks, and doesn't work too successfully for mp3 compressed tracks, as the conpression seems to muddy the seperation.

As far as removing other noises, such as background or ambient noise from live shoots, it takes patience, an good equaliser, and a lot of time.