METHOD AND AN APPARATUS FOR ENCODING AND DECODING AN AUDIO SIGNAL, PARTICULARLY FOR CONVENIENTLY PROVIDING THE EXTENSIBILITY OF AN MPEG-D USAC

摘要

PURPOSE: A method and an apparatus for encoding and decoding an audio signal are provided to improve the sound quality or meta data for audio content by inserting additional information to an MPEG-D USAC method.;CONSTITUTION: Core coding information is inserted into a bit stream of an audio signal or a speech signal. Coding tool information is inserted, and supplementary information bit is inserted when the additional information exists. It is judged whether or not eSBR tool is used(302). It is judged whether or not an MPEGS tool is used(303), and it is also checked whether or not the inclusion of additional information is required(304).;COPYRIGHT KIPO 2010