Patent ID: 7895046
Filing Date: 2011-02-22
Classification: G10L

Abstract:
1. A method of encoding a sampled signal which is divided into consecutive blocks, the sampled signal being obtained by transducing a sound wave into an analog electronic signal and sampling of the analog signal, wherein the method includes the following steps applied to a block: encoding a first part of the block using an encoder, wherein the first part is located somewhere between the two end boundaries of the block, thereby obtaining an encoded start state for the block; encoding a second part of the block using the encoder and a predictive coding method that is based on said encoded start state and that gradually encodes said second part in the direction of one of said two end boundaries; and determining if there are any signal samples located between said start state and the other one of said two end boundaries, and if so, encoding a third part of the block including these samples using the encoder and a predictive coding method that is based on said encoded start state and that gradually encodes said third part in the direction of said other one of said two end boundaries, whereby said third part, with respect to a time base associated with the block, is encoded in an opposite direction as compared with the encoding of said second part, wherein the step of gradually encoding said third part in the direction of said other one of said two end boundaries starts from a sub-block immediately before the first part of the block and ends at a sub-block at the other one of said two end boundaries.