Apparatus and method for coding and decoding multi-object audio signal with various channel

摘要

Provided are an apparatus and method for coding and decoding a multi-object audio signal. The apparatus includes a down-mixer for down-mixing the audio signals into one down-mixed audio signal and extracting supplementary information including header information and spatial cue information for each of the audio signals, a coder for coding the down-mixed audio signal, and a supplementary information coder for generating the supplementary information as a bit stream. The header information includes identification information for each of the audio signals and channel information for the audio signals.

主权项

1. An apparatus for decoding multi-object audio signals having different channels, comprising:
a supplementary information control means for controlling supplementary information extracted from input signal, using control information for downmix audio signal restored from the input signal, wherein the control information includes rendering control information for the restored downmix audio signal; and an output means for outputting the restored downmix audio signal as multi-channel audio signal, using the supplementary information controlled by the supplementary information control means, wherein the supplementary information includes spatial cue information for audio object of one of mono channel, stereo channel, and multi-channel of the multi-object audio signal.