IN AN REDUCTION OF COMB FILTER ARTIFACTS IN MULTI-CHANNEL DOWNMIX WITH ADAPTIVE PHASE ALIGNMENT

摘要

An audio signal processing decoder having at least one frequency band (36) and being configured for processing an input audio signal (37) having a plurality of input channels (38) in the at least one frequency band (36), wherein the decoder (2) is configured to analyze the input audio signal (37), wherein inter-channel dependencies (39) between the input channels (38) are identified; and to align the phases of the input channels (38) based on the identified inter-channel dependencies (39), wherein the phases of input channels (38) are the more aligned with respect to each other the higher their inter-channel dependency (39) is; and to downmix the aligned input audio signal to an output audio signal (40) having a lesser number of output channels (41) than the number of the input channels (38).