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Three-Channel Audio Recording and Playback via Two-Channel Transmission with Absolute Minimum Cross-Talk

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Three discrete audio signals are combined by means of an encoding matrix into two signals. The stereo compatability of these two signals is shown to be optimum in the sense of left-right separation. This encoded two-channel signal is expanded by means of a decoding matrix into three pseudo-discrete channels. It is shown that this three-channel signal is optimum in the sense of minimum cross-talk.

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AES - Audio Engineering Society