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Paper abstract


A New Active Matrix Decoder for Surround Sound


Kenneth Gundry
Dolby Laboratories Inc., San Francisco, CA, USA

The decoder employs control signals derived from the signal outputs rather than the inputs, that is, using feedback analogous to and output-controlled limiter. This leads to tighter tolerances, excellent crosstalk figures, and improved dynamics. It gives good performance on matrix-encoded sources and very pleasing results on unencoded two-channel material. The paper discusses their principles and their benefits.