Method and apparatus for generating or cutting or changing a frame-based bit stream format file that includes at least one header section, and a corresponding data structure

摘要

Method for generating a frame-based audio bit stream format file that includes at least one bit stream header section (Header), including said encoded signal data frames, in which the data required for decoding or An evaluation of the data of a current frame (Frame0, Frame) may be contained in one or more previous frames (Frame-5, Track-5 4), characterized by having in said header elements of information representing: - total number of samples per channel (OFL) for said file; - an "archiving mode" or a "continuous flow mode" (File Mode) for said file; - if a decoding of said encoded signal data can begin or not in the first frame of said file (SilenceSiFirstSuperTrama); - if a decoding of said encoded signal data should not start on said first frame of said file, the number of initial frames to be silenced (Silenced Frames) is initialized while states are decoded, and optionally, for an exact cut-off characteristic per sample , the number of samples to be silenced (Silenced Samples) in the corresponding frame; - in said continuous flow mode, a value (Sum Check Continuous Flow) to identify a previous superframe for a consistency check, in which, in said archiving mode, said file includes a single bit stream header section (Header) and successive said frames (Frame0, Frame1, ..., Frame), and a decoding of said encoded signal data must start with the first (Frame0) of said frames, and in which, in said continuous flow mode, said flow bit contains more than one superframe, each of said superframes beginning with a single bit stream header section (header) followed by several of said frames, and a decoding of said encoded signal data can be initialized in each of said superframes, and in which said information element relative to the number of initial frames to be silenced (Silenced Frames) indicates how many initial frames in a current superframe are required ren to establish data to initialize states of a decoding of said signal data before actually beginning to decode encoded signal data from the following frames or frames of said current superframe, such initial frames not being used to decode the encoded signal data contained in them.