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Dolby ProLogic Surround is encoded in the stereo signal through phase shifting. Does the MDs transform coding interfere with the “Surround” information after recording and playback?

April 26, 2017Dolby encoded phase prologic shifting signal Stereo Surround transform

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Dolby ProLogic Surround is encoded in the stereo signal through phase shifting. Does the MDs transform coding interfere with the “Surround” information after recording and playback?

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I have done extensive testing with this, and have yet to find a single instance where the MD encoding/decoding affected the Pro-Logic encoding in any way. In every test, the surround steering information remained intact, and the result sounded precisely like the original.

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I have done extensive testing with this, and have yet to find a single instance where the MD encoding/decoding affected the Pro-Logic encoding in any way. In every test I did, the surround steering information remained intact, and the result sounded precisely like the original. Scott MacLean (scottm@netbound.