Patent ID: 8184809

Claim:
A process, comprising: distributing digital audio sequences according to a nominal stream format including a succession of frames, individual frames including at least one digital audio block having a plurality of coefficients corresponding to digitally coded audio elements; modifying at least one block of an original stream of sequences, in an adaptive manner on the original stream as a function, at least in part, of one or more characteristics representative of a structure, content or parameters of the original stream, a target profile or external events, to produce a modified stream and to produce complementary information, the modifying comprising modifying at least some of the plurality of coefficients yet leaving others of the plurality of coefficients in their original state; the complementary information including data and a function that together, in combination with the modified stream, allow for reconstruction of the original stream from the modified stream on target equipment, the data including the unmodified state of the at least some of the plurality of coefficients; and transmitting the modified stream and the complementary information to the target equipment.