Hi I need help with extracting audio.

Quick question, I have this music track that is basicaly a repeating beat with guitar riffs that play on top. Is there any way, using Soundbooth, that I can extract the two elements (Beat/Guitar) into seperate tracks so that I could edit them seperatly?
Thanks
John

It will definitely be difficult with Soundbooth, and depending on the source file, most other applications as well. Soundbooth doesn't have a Center Channel Extraction tool like Audition, so your options would be to use a different tool in an unexpected manner, or to perform some time-consuming manual extraction.
If the file is such that the beat exists on one channel and the guitar on the other, select File > Export > Channels to Mono Files. This is probably not the case, unless it's an old Dylan or Beatles recording.
Second, I might try selecting one loop of the beat with no guitar, and capturing this as a Noise Print. (Find this under Tasks > Clean Up Audio.) Once captured, select the entire file and apply a noise reduction. There is a (very) slight possibility this process will isolate the guitar. after saving the guitar as a new file, undo the noise reduction so you have your original file again, open the guitar file and capture the entire thing as a noise print, and apply this to the original file in Noise Reduction. Ideally, you would be left with the beat. Place these two files on separate tracks in Multitrack and you might get something that resembles the original track, but that allows you to modify levels or place effects on the beat and guitar separately.
Now, odds are very high that this just won't work, either. The Noise Reduction tool is not a scalpel for removing sounds, but is a fuzzy and dynamic tool to remove audio data that doesn't appear to belong.
You could also go back to your original file, open Soundbooths Spectral Frequency view be selecting Tasks > Remove a Sound, then use the lasso tool to painstakingly select the orange and yellow areas that represent the guitar parts, cut this selection and paste it into a new file of the same duration. When layered in multitrack, they would sound identical to the original file, but you'd have some control over the beat and the guitar part. This however, is still not ideal since any frequencies in the beat that overlapped the guitar would be moved to the guitar track. It would also be a TON of work.
So to save you time, I would highly recommend using a more advanced audio editing tool such as Audition. If you're using Windows, you can download a free 30-day trial at adobe.com. Using the center channel extractor effect, you can zero in on where the guitar part is panned in the stereo field and strip it out to a new file.
Good luck

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