Downmixer and method and multichannel encoder and multichannel decoder for downmixing at least two channels

摘要

A downmixer for downmixing said at least two channels of a multichannel signal (12) having two or more channels, a processor (10) for calculating a partial downmix signal (14) from said at least two channels ; a complementary signal calculator (20) for calculating a complementary signal from the multi-channel signal (12), wherein the complementary signal (22) is different from the partial downmix signal (14); and an adder (30) for adding the partial downmix signal (14) and the complementary signal (22) to obtain a downmix signal (40) of the multi-channel signal.