audio decoder, audio decoding method, receiver for receiving a n-channel signal, transmission system for transmitting an audio signal, method for receiving an audio signal, method for transmitting and receiving an audio signal, storage media computer readable, and audio playback device

摘要

audio decoder, audio decoding method, receiver for receiving a n-channel signal, transmission system for transmitting an audio signal, method for receiving an audio signal, method for transmitting and receiving an audio signal, program product computer and audio playback device. an audio decoder includes a receiver (801) for receiving input data comprising an n-channel signal corresponding to a mixed signal descending from an m-channel audio signal, m n, having value subband coding arrays applied to frequency subbands and parametric multichannel data. a subband filter bank (805) generates real value frequency subbands for the n channel signal. an array processor 809 determines real-value subband decoding arrays to compensate for the application of the coding arrays in response to parametric multichannel data. a compensation processor (807) generates down-mix data corresponding to the down-mixed signal by a matrix multiplication of the real-value subband decoding arrays and n-channel signal data in at least some frequency sub-bands. real value. Down-mix data can be used to regenerate the down-mixed signal and m-channel audio signal. The decoder can compensate for mpeg array surround compatibility operations performed on the encoder using real value frequency subbands.