TIME WARP CONTOUR CALCULATOR, AUDIO SIGNAL ENCODER, ENCODED AUDIO SIGNAL REPRESENTATION, METHODS AND COMPUTER PROGRAM

摘要

A time warp contour calculator for use in an audio signal decoder for providing a decoded audio signal representation on the basis of an encoded audio signal representation is configured to receive an encoded warp ratio information, to derive a sequence of warp ratio values from the encoded warp ratio information, and to obtain warp contour node values starting from a time warp contour start value. Ratios between the time warp contour node values and the time warp contour starting value associated with a time warp contour start node are determined by the warp ratio values. The time warp contour calculator is configured to compute a time warp contour node value of a given time warp contour node, which is spaced from the time warp contour starting node by an intermediate time warp contour node on the basis of a product-formation comprising a ratio between the time warp contour node value of the intermediate time warp contour node and the time warp contour starting value and a ratio between the time warp contour node value of the given time warp contour node and the time-warp contour node value of the intermediate time warp contour node as factors.