Patent ID: 9299363
Filing Date: 2016-03-29
CPC Classification: G10L

Claim Text:
1. A time warp contour calculator apparatus for use in an audio signal decoder for providing a decoded audio signal representation on the basis of an encoded audio signal representation, comprising: a warp ratio decoder that includes a mechanism for receiving an input signal including encoded warp ratio information; and a warp node value calculator in communication with the warp ratio decoder; wherein the warp ratio decoder is configured to process the encoded warp ratio information to derive a sequence of warp ratio values, wherein the warp node value calculator is configured to process the sequence of warp ratio values to acquire, starting with a time warp start value, warp contour node values, wherein 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; and wherein the warp node value calculator is configured to compute a time warp contour node value of a given time warp contour node, wherein the given time warp contour node is spaced from the time warp contour starting node with an intermediate time warp contour node in between on the basis of a product-formation, wherein the product-formation comprises as factors 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; wherein the warp node value calculator includes a mechanism for outputting an output signal that includes the warp contour node values.