METHOD FOR CODING A SOURCE AUDIO SIGNAL AND CORRESPONDING COMPUTER PROGRAM PRODUCTS, CODING DEVICE, DECODING METHOD, SIGNAL AND DATA MEDIUM

摘要

The invention relates to a method for coding a source audio signal, involving the transformation of an amplitude/time space into a multi-component amplitude/phase/time space, comprising the sinusoidal modeling of the audio signal and the delivery of the sinusoidal components that change over time. The method comprises the following steps in which: the components are compared to one another in order to define at least one group with at least two components using at least one similarity criterion; and, for at least one group, at least one reference datum is coded, said reference datum being represented by an evolved phase originating from a first component of the group, known as the reference component, and at least one complement datum is coded, said complement datum being associated with at least a second component from the group and, together with the reference datum, enabling the reconstruction of at least one piece of information that is representative of at least one component.