Apparatus and method for encoding/decoding multichannel signal

摘要

An apparatus and method for encoding/decoding a multi-channel signal may be provided. The apparatus of encoding a multi-channel signal may insert information about whether to encode a phase parameter indicating phase information of a plurality of channels, included in the multi-channel signal, in a bitstream of the multi-channel signal. The apparatus of decoding a multi-channel signal may determine whether to up-mix a mono signal using the phase parameter based on the information about whether to encode.

主权项

1. An apparatus for decoding a multichannel signal, the apparatus comprising:
a mono signal decoding unit configured to decode a downmixed mono signal from a bitstream; a band information obtaining unit configured to obtain a band information for a phase parameter, if it is determined that the phase parameter is available for a current frame based on additional information included in the bitstream; a parameter decoding unit configured to decode the phase parameter included in the bitstream; and an up-mixing unit configured to up-mix the downmixed mono signal using the phase parameter based on the band information.