Pardon my ignorance, but how does out of phase-mixing work and what characterizes it?
Beats me. can someone explain it?
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I won't go into the real technical aspects, because it requires knowledge of wave mechanics, but essentially what you're doing is splitting whatever track you want to mix out of phase into two separate but equal mono signals. One is run through with no processing, but the other the phase/polairity is altered electronically by anything up to 90 degrees. The two signals are thn recombined to one signal which is now out of phase relative to how it started out. The signal is then mixed with the other tracks normally.
The best way to describe the sound is to say that rather than giving that voice (or whatever was on the track) a discrete location in the mix it's now has a bit of an indistinct, slightly spread out location in the mix and sounds processed. Listen to Mike Love's lead on "Don't Go Near The Water" through headphones for a good example.