3-channel recording (of front channels in 5.1 surround) presents a few problems and hard choices that are easier to handle in 2-channel recording. One of these is achieving a good enough channel separation, with or without also achieving a sharp imaging. The present paper will especially emphasize the latter, and discuss a couple of methods and present a new hybrid setup that can achieve both good channel separation and sharp imaging across the L-C-R stereo stage at the same time. Microphone setups for hall ambience recording will also be briefly discussed.
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