A device comprising: a processor configured to receive a first combined frame and a second subsequent combined frame corresponding to a multi-channel audio signal, wherein the first and second combined frames each include a combination of an input frame of a first audio channel of the multi-channel audio signal and an input frame of corresponding time segment of a second audio channel of the multi-channel audio signal, wherein, for each of the first and second combined frames, the combination of an input frame of the first audio channel and an input frame of corresponding time segment of the second audio channel is obtained by performing a non-causal time shift on the input frame of the second audio channel, and by obtaining a sum or difference between two sets of samples, the first set of samples being equal to either the input frame of the first audio channel or to the input frame of the first audio channel multiplied by a coefficient, the second set of samples being equal to either the time-shifted input frame of the second audio channel or the time-shifted input frame of the second audio channel multiplied by a coefficient, the first and second sets of samples being equalized based on a gain parameter indicative of the relative power levels of the input frames of the first and second audio channels; a memory configured to store first portion data of the first combined frame, the first portion data received from the processor; and a combiner configured to generate a frame at a multi-channel encoder, the frame including a subset of samples of the first portion data, one or more samples of updated sample data corresponding to the first combined frame, and a group of samples of second combined frame data corresponding to the second combined frame, wherein the one or more samples of updated sample data corresponding to the first combined frame comprise one or more samples to correct for portions of the first combined frame in which samples of the input frame of the second audio channel for the first combined frame are unavailable due to the non-causal time shift, the one or more samples being generated based on either: i) the input frame of the first audio channel for the first combined frame, the input frame of the second audio channel for the first combined frame, and the input frame of the second audio channel for the second combined frame, or ii) a prediction of the samples of the input frame of the second audio channel for the first combined frame that are unavailable. a processor configured to receive a first combined frame and a second subsequent combined frame corresponding to a multi-channel audio signal, wherein the first and second combined frames each include a combination of an input frame of a first audio channel of the multi-channel audio signal and an input frame of corresponding time segment of a second audio channel of the multi-channel audio signal, wherein, for each of the first and second combined frames, the combination of an input frame of the first audio channel and an input frame of corresponding time segment of the second audio channel is obtained by performing a non-causal time shift on the input frame of the second audio channel, and by obtaining a sum or difference between two sets of samples, the first set of samples being equal to either the input frame of the first audio channel or to the input frame of the first audio channel multiplied by a coefficient, the second set of samples being equal to either the time-shifted input frame of the second audio channel or the time-shifted input frame of the second audio channel multiplied by a coefficient, the first and second sets of samples being equalized based on a gain parameter indicative of the relative power levels of the input frames of the first and second audio channels; a memory configured to store first portion data of the first combined frame, the first portion data received from the processor; and a combiner configured to generate a frame at a multi-channel encoder, the frame including a subset of samples of the first portion data, one or more samples of updated sample data corresponding to the first combined frame, and a group of samples of second combined frame data corresponding to the second combined frame, wherein the one or more samples of updated sample data corresponding to the first combined frame comprise one or more samples to correct for portions of the first combined frame in which samples of the input frame of the second audio channel for the first combined frame are unavailable due to the non-causal time shift, the one or more samples being generated based on either: i) the input frame of the first audio channel for the first combined frame, the input frame of the second audio channel for the first combined frame, and the input frame of the second audio channel for the second combined frame, or ii) a prediction of the samples of the input frame of the second audio channel for the first combined frame that are unavailable.