What does cpu intensive mean?

Question

I downloaded free trial of adobe audition 3, when trying to remove vocals to make karaoke song a message came up saying cpu intensive
can anyone please tell me what this means, and the vocals where still there.
Thank you
mimsypoo

Answer 1

Thanks for all the info,
I tried remove vocals from various sources without success,so I guess
this programme isn't any good for what i am trying to do or maybe it,s me.
Thank you Mimsypoo
durin <[email protected]> wrote:
CPU Intensive warnings come up when using effects that are not suited for real-time use.  This means it's fine to use the effect on a file where you don't mind waiting a few minutes for it to do its thing, but you wouldn't want to plug the effect into a track and try to remove vocals from a microphone you're singing into.  It requires the computer to do too much calculation and it wouldn't be able to keep up.
As for why your vocals were still there, vocal removal is a very complicated procedure, and honestly more often than not, you won't get satisfactory results.  When a song is mixed, often the vocal portion is placed in a very specific portion of the stereo field - usually right in the center so that both ears hear it equally.  When this is the case, you can usually isolate and remove this portion of the audio if you can determine where in that stereo field it is located.  Other songs, however, may spread the vocals out more broadly, process it with several effects that migrate around the stereo field, or even use multiple recordings of the same vocals in different locations.  This makes it much more difficult, as close to impossible as can be without fully committing myself, to accurately remove the vocals without affecting a significant portion of the rest of the track.
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