Audio coding based on filter bank framework with additional to suppress artifacts of misalignment in the limits of table

摘要

Invention patent: b "audio coding based on filter bank framework with additional to suppress artifacts of misalignment in the limits of table".Various techniques for processing audio signals can be used in various combinations.In order to improve the quality of audio represented by a stream of information formed by editions of union of two or more other information flows.The techniques are particularly useful in applications that enfeixam the audio information with video information.In one technique, words of gain control, carried with the stream of audio information are used to interpolate sound levels of reproduction by means of a union.In another technique, the banks of filters or special forms of transformation of TDAC is used to suppress artifacts of misalignment in both sides of a union.Still another technique, the banks of filters or special functions of windows for cross fading are used to optimize the mitigation of spectral interference created in a union.In another technique, the rate of audio samples are converted in accordance with the lengths and rates of tables to enable the audio information is enfeixada, for example.With the information of video. In another technique, the audio blocks are aligned, dynamically, so that the proper synchronization can be maintained by means of a union.An example for 48 kHz audio with video, NTSC is discussed.