Re: What is a matrix?
ALD = Assisted Listening Device
similar to
IEM = In Ear Monitor
Sometimes ppl capture the band's monitor mix on a hearing aid or a radio.
A "real" matirx is what they call M/S stereo micing. A unidirectional mic and a figure eight mic are mixed, with the uni centre and the figure eight mixed at about 20% volume comparatively. For the figure eight the portion mixed with the left is in phase, the portion mixed in the right is out of phase, so when played back in mono it cancels out and you just hear the uni mic, thus M/S = Mono/Stereo.
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