Decoding method and device of audio frequency

A decoding method and decoding device technology, applied in voice analysis, instruments, etc., to achieve the effect of reducing complexity, reducing impact, and saving judgment time

Active Publication Date: 2013-10-23
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem that the present invention solves is how to improve the decoding efficiency of the audio code stream, and reduce the complexity of decoding, improve the decoding quality

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  • Decoding method and device of audio frequency
  • Decoding method and device of audio frequency
  • Decoding method and device of audio frequency

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Embodiment Construction

[0050] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0051] In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

[0052] figure 1 It is a flow chart of the audio decoding method provided by the embodiment of the present invention, combined below figure 1 Detailed description.

[0053] The decoding method of described audio comprises:

[0054] Step S1, acquire a frame in the audio code stream, the f...

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Abstract

The invention discloses a decoding method and a device of audio frequency, wherein the decoding method of audio frequency comprises the steps of: obtaining a frame in the audio frequency code stream, wherein the frame in the audio frequency code stream comprises main data, synchronous data of the frame and data offset of the frame, and the data offset of the frame refers to the offset of the starting position of the decoding data of the frame relative to the synchronous data of the frame; storing the main data in the current frame in a buffer; determining the decoding data of the current frame based on the length of the main data in the buffer and the data offset of the next frame; and decoding the decoding data of the current frame. The technical scheme of the invention has the advantages of improving the decoding efficiency of the audio frequency code stream, reducing the decoding complexity and improving the decoding quality.

Description

technical field [0001] The present invention relates to the technical field of audio decoding, in particular to an audio decoding method and device. Background technique [0002] There are many audio formats at present, such as WAV, MIDI, WMA, MP3 and other formats, among which the MP3 format is more commonly used. Regardless of the format of the audio, it needs to be coded before it can be played. [0003] Each MP3 file can be regarded as an audio code stream, including a frame string composed of a plurality of media frames (referred to as frames), and a frame is a unit used by an MP3 file to calculate the amount of data. Each frame stores a part of main data (main data) for decoding. [0004] The length of main data stored on each frame is usually equal, and each frame can store main data used to decode other frames. That is to say, the main data used for decoding the current frame can be stored in other frames, usually, in the main data of the previous frame or two pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/00G10L19/16
Inventor 李昙张本好徐晶明吴晟林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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