Apparatus and method for processing multi-channel audio signal
Disclosed is an apparatus and method for processing a multichannel audio signal. A multichannel audio signal processing method may include: generating an N-channel audio signal of N channels by down-mixing an M-channel audio signal of M channels; and generating a stereo audio signal by performing binaural rendering of the N-channel audio signal.
1. A multichannel audio signal processing method processed by a decoder, comprising:
generating an N-channel audio signal by down-mixing an M-channel audio signal in a format converter according to reproduction layout; and
outputting the N-channel audio signal,
wherein a plurality of channels corresponding to the M-channel audio signal are inputted to the format converter through a first dynamic range control (DRC1).
2. The method of claim 1 , wherein the M-channel audio signal includes a height channel,
wherein the generating the N-channel audio signal comprises downmixing the M-channel audio signal to minimize loss of the height channel included in the M-channel audio signal to generate the N-channel audio signal including the height channel.
3. The method of claim 1 , wherein the number of M channels is greater than the number of N channels.
4. A format converter comprising:
one or more processor configured to:
generate an N-channel audio signal by down-mixing an M-channel audio signal in a format converter according to reproduction layout; and
output the N-channel audio signal,
wherein a plurality of channels corresponding to the M-channel audio signal are inputted to the format converter through a first dynamic range control (DRC1).
5. The format converter of claim 4 , wherein the M-channel audio signal includes a height channel,
wherein one or more processor downmix the M-channel audio signal to minimize loss of the height channel included in the M-channel audio signal to generate the N-channel audio signal including the height channel.
6. The method of claim 4 , wherein the number of M channels is greater than the number of N channels.