Patent ID: 8639735
Filing Date: 2014-01-28
Classification: G10L

Abstract:
1. A method implemented in a conversion system, comprising an input block, an output block and a module, the method comprising: converting a first representation of a signal from one sub-band domain to another sub-band domain, said first representation of the signal in the sub-band domain being in the form of a first vector, by compacting in one and the same processing the application of the first vector comprising a first number L of respective sub-band components to a bank of synthesis filters, then to a bank of analysis filters, to obtain a second vector comprising a second number of respective sub-band components M, wherein converting the first representation of the signal from the one sub-band domain to another sub-band domain comprises the following steps, after determination of a third number K, the least common multiple between the first number L and the second number M: a) if the third number K is different from the first number L, arrangement blockwise by a serial/parallel conversion of the input block of the first vector to obtain p b) application by the module of a chosen matrix filtering, involving a square matrix T(z) of dimensions K×K, to said p c) if the third number K is different from the second number M, arrangement blockwise by a parallel/serial conversion of the output block of the p wherein the converting is performed in a computer comprising a non-transitory computer readable medium comprising executable instructions for performing the converting.