Apparatus and method for efficient object metadata coding

摘要

An apparatus (100) for generating one or more audio channels is provided. The apparatus (100) comprises a metadata decoder (110) for receiving one or more compressed metadata signals. Each of the one or more compressed metadata signals comprises a plurality of first metadata samples. The first metadata samples of each of the one or more compressed metadata signals indicate information associated with an audio object signal of one or more audio object signals. The metadata decoder (110) is configured to generate one or more reconstructed metadata signals, so that each of the one or more reconstructed metadata signals comprises the first metadata samples of one of the one or more compressed metadata signals and further comprises a plurality of second metadata samples. Moreover, the metadata decoder (110) is configured to generate each of the second metadata samples of each reconstructed metadata signal of the one or more reconstructed metadata signals depending on at least two of the first metadata samples of said reconstructed metadata signal. Moreover, the apparatus (100) comprises an audio channel generator (120) for generating the one or more audio channels depending on the one or more audio object signals and depending on the one or more reconstructed metadata signals. Furthermore, an apparatus for generating encoded audio information comprising one or more encoded audio signals and one or more compressed metadata signals is provided.