Patent ID: 8155971
Filing Date: 2012-04-10
Classification: G10L,H04S

Abstract:
1. An audio decoder for decoding a multi-audio-object signal comprising an audio signal of a first type and an audio signal of a second type encoded therein, the multi-audio-object signal comprising a downmix signal and side information, the side information comprising level information of the audio signal of the first type and the audio signal of the second type in a first predetermined time/frequency resolution and a residual signal res specifying residual level values in a second predetermined time/frequency resolution, the audio decoder comprising: a processor configured to compute a prediction coefficient matrix C based on the level information; and an up-mixer configured to up-mix the downmix signal based on the prediction coefficients to acquire a first up-mix audio signal approximating the audio signal of the first type and/or a second up-mix audio signal approximating the audio signal of the second type, wherein the up-mixer is configured to yield the first up-mix audio signal S where the “1” denotes, depending on a number of channels of d, a scalar, or an identity matrix, and D