[Walt]

Radium wrote:


Actually, with most stereo music, if you invert the phase of one
channel and combine with the other non-inverted, you get a mono without
the main vocals, bass, and percussion. This is because -- usually --
the lead vocals, bass, and percussion are recorded identically in both
the left and right channels. The paino, chorus, guitar, and synth pads
are usually recorded differently in the left and right channel -- hence
you won't lose these sounds if you process the audio file in the
aformentioned manner. Most "voice cancellors" use this technique. Of
course, this method assumes that the voice is recorded in the center of
the stereo channels while non-vocals are not in phase for both
channels.


No good for the old old songs where everything is recorded in
mono.


Fascinating. A mono sum technique that is incompatible with mono source
material. Please tell us more.

//Walt