Vocal Reduction

Vocal Reduction works perfectly with "Multiplex" discs.

Under the Controls menu there are three options that are available when playing a song:

• Suppress Left Channel Vocal
• Suppress Right Channel Vocal
• Suppress Center Channel Vocal

When you suppress the Left or Right channel, kJams simply takes the opposite channel and duplicates it into the target channel, effectively eliminating the target channel. This is useful when there are vocals only in the target channel, and will perfectly eliminate the vocals.

When you suppress the Center channel, kJams simply subtracts one channel from the other. Presuming the Vocal was mixed directly in the center, this will do a fair job at removing the vocal, however this is not always the case. You'll have to try it on a case by case basis, some songs will sound terrible using Center Channel Suppression.

In the future, I will allow Audio Unit plugins, at which time I will recommend Vox Reducer. Until then, if you really need better controls you can use GarageBand with Vox Reducer to generate your audio track, then bring that back into kJams.

For a detailed explanation of Center Channel Suppression, see this article.