Method for encoding multi-channel audio signal and encoding device for performing encoding method, and method for decoding multi-channel audio signal and decoding device for performing decoding method
AssigneeElectronics and Telecommunications Research Institute
InventorsSeung Kwon BEACK, Jeong Il SEO, Jong Mo SUNG, Tae Jin LEE, Jin Soo CHOI
Life of this patent
Estimating the term…
Abstract
An encoding method for a multi-channel audio signal, an encoding apparatus for performing the encoding method, and a decoding method for a multi-channel audio signal and a decoding apparatus for performing the decoding method are disclosed. A method and apparatus of bypassing an MPEG Surround (MPS) standard operation and using an arbitrary tree when a number of audio signals of N channels exceeds a channel number defined in an MPS standard, is disclosed.
Claims17
An encoding method for a multi-channel audio signal, the method comprising:
- generating audio signals of N/2 channels by downmixing audio signals of N channels using an MPEG Surround (MPS) encoder;
- and
- performing encoding with respect to a core band of the audio signals of the N/2 channels using a Unified Speech and Audio Codec (USAC) encoder.
A decoding method for a multi-channel audio signal, the method comprising:
- performing decoding with respect to a core band of audio signals of N/2 channels using a Unified Speech and Audio Codec (USAC) decoder;
- and
- generating audio signals of N channels by upmixing the audio signals of the N/2 channels using an MPEG Surround (MPS) decoder.
13-16. (canceled)
A decoding apparatus for a multi-channel audio signal, the apparatus comprising:
- a Unified Speech and Audio Codec (USAC) decoder configured to perform decoding with respect to a core band of audio signals of N/2 channels;
- and
- an MPEG Surround (MPS) decoder configured to generate audio signals of N channels by upmixing the audio signals of the N/2 channels.
Dependencies are inferred from the claim text.