METHOD FOR UPDATING AN ENCODER BY FILTER INTERPOLATION

摘要

The present invention relates to a method for updating the processing capacity of an encoder or decoder to use a modulated transform having a size greater than a predetermined initial size. More particularly, the invention relates to the encoders or decoders for storing an initial prototype filter defined by an ordered set of initial size coefficients. A step for constructing a prototype filter of a size greater than said initial size to implement the modulated transform of the greater size by inserting at least one coefficient between two consecutive coefficients of the initial prototype filter.