FIELD: physics, computer engineering.
SUBSTANCE: invention relates to an encoder which supports switching between time-domain aliasing cancellation transform coding mode and time-domain coding mode. The result is achieved by adding a further syntax portion to frames, depending on which the parser of a decoder may select between a first action of expecting the current frame to contain, and thus reading forward aliasing cancellation data from the current frame and a second action of not expecting the current frame to contain, and thus not reading forward aliasing cancellation data from the current frame.
EFFECT: codec is made less liable to frame loss.
20 cl, 27 dwg
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