AUDIO OBJECT SEPARATION FROM MIXTURE SIGNAL USING OBJECT-SPECIFIC TIME/FREQUENCY RESOLUTIONS

摘要

An audio decoder is proposed for decoding a multi-object audio signal consisting of a downmix signal X and side information PSI. The side information comprises object-specific side information PSIi, for an audio object Si in a time/frequency region R(tR,fR), and object-specific time/frequency resolution information TFRIi indicative of an object-specific time/frequency resolution TFRh of the object-specific side information for the audio object Si in the time/frequency region &Kgr;(tR,fR). The audio decoder comprises an object-specific time/frequency resolution determiner 110 configured to determine the object-specific time/frequency resolution information TFRIi from the side information PSI for the audio object Si . The audio decoder further comprises an object separator 120 configured to separate the audio object si from the downmix signal X using the object-specific side information in accordance with the object-specific time/frequency resolution TFRIi. A corresponding encoder and corresponding methods for decoding or encoding are also described.