Patent ID: 8417520

Claim:
A method for synthesizing a digital audio signal, represented by consecutive blocks of samples, in which on receiving such a signal, in order to replace at least one invalid block, a replacement block is generated from the samples of at least one valid block preceding the invalid block, comprising the following steps: a) selecting a chosen number of samples forming a succession in at least one last valid block preceding the invalid block, b) fragmenting the succession of samples into groups of samples, and, in at least one part of the groups, inverting the samples according to predetermined rules, c) re-concatenating the groups, the samples of some of which at least have been inverted in step b), in order to form a part at least of the replacement block, and d) if said part obtained in step c) does not fill the whole of the replacement block, copying said part into the replacement block and applying steps a), b), c) again to said copied part, wherein the fragmentation of step b) is carried out by groups of two samples, and the positions of the samples of a single group are inverted one with the other.