Patent ID: 6369722
Filing Date: 2002-04-09
Classification: G10L,H03M

Abstract:
A method for coding a signal in which a selection is made, on the basis of a portion of the signal (S), of at least one coding parameter vector belonging to a reference library containing 2Q vectors each designated by an address of Q bits and an output digital data stream (&PHgr;) is formed containing an index deduced from the address of the vector selected from the reference library, wherein the output digital data stream has a rate which can be adjusted by varying the number Qâˆ’p of bits forming this index contained in the digital data stream, and wherein, for each rate value corresponding to a value of the integer p&gE;0, the index contained in the digital data stream is formed of Qâˆ’p bits which, completed by p arbitrary bits of predetermined positions, define indices of Q bits representing a group of 2p addresses including the address of the vector selected from the reference library.