Patent Document ID: 20080306732
Application ID: 11795085
Patent Flag: 0

Claim One:
1. A method of coding according to a second coding format, on the basis of information obtained by implementing at least one step of coding according to a first coding format, the first and second coding formats implementing, in particular for the coding of a speech signal, a step of searching for long-term prediction (LTP) parameters by exploring at least one dictionary having candidate parameters, one at least of the first and second coding formats using a filtering with several coefficients for a fine search for the LTP parameters, the method comprising: a) defining orders of at least one dictionary that the second coding format uses; b) recovering an a priori information, obtained following the determination of the LTP parameters in the course of the coding according to the first coding format, so as to select at least one order from said dictionary; c) applying the selected order to the candidate parameters of said dictionary so as to choose a plurality of first candidates; and d) so as to perform the second coding, conducting the fine search for the LTP parameters only among said plurality of candidate parameters.