Patent ID: 8515083
Filing Date: 2013-08-20
Classification: G10L,H04S

Abstract:
1. A multi-channel synthesizer for generating at least three output channels using an input signal having at least one base channel, the base channel being derived from an original multi-channel signal, comprising: an energy measure provider for providing an energy measure; and a up-mixer for up-mixing the at least one base channel based on an energy-loss introducing up-mixing rule so that the at least three output channels are obtained, wherein the up-mixer is operative to generate the at least three output channels in response to the energy measure provided by the energy measure provider and at least two different up-mixing parameters so that the at least three output channels have an energy higher than an energy of a signal obtained by only using the energy-loss introducing up-mixing rule instead of an energy error, the energy error depending on the energy-loss introducing up-mixing rule, and wherein the at least two different up-mixing parameters and the energy measure for controlling the up-mixer are included in the input signal, wherein the base channel is a base audio channel and the output channels are output audio channels, and wherein at least one of the energy measure provider and the up-mixer comprises a hardware implementation.