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Audio data decoding method and device

A technology of audio data and decoding method, which is applied in the field of decoding methods and devices for noise caused by loss, can solve problems such as audio frame audio noise, and achieve the effects of improving satisfaction, improving reception performance, and reducing discomfort

Active Publication Date: 2016-08-17
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

This loss of audio frames results in noise in the decoded output audio

Method used

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  • Audio data decoding method and device
  • Audio data decoding method and device
  • Audio data decoding method and device

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Embodiment Construction

[0021] The advantages, features, and methods for realizing them of the present invention will become more apparent by referring to the accompanying drawings and the embodiments described in detail below. However, the present invention is not limited to the embodiments disclosed below, but can be realized in various forms. The embodiments of the present invention are only provided to fully disclose the present invention and to allow those skilled in the art to easily understand the scope of the invention, and the present invention is based on the claims. On the one hand, the technical terms used in this specification are used to describe the embodiments, not to limit the present invention. The singular forms mentioned in the specification include the plural forms unless otherwise specified. The use of "comprises" or "comprising" in the specification does not exclude the existence or addition of more than one other than the mentioned elements, steps, actions and / or components. ...

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Abstract

When an audio signal is received to be decoded, whether errors are provided between transmitted data and received data is checked. Erroneous audio frames are discarded according to a checking result and the rest audio frames are decoded. As above, audio frame loss occurs because the erroneous audio frames are discarded and leads to heavy noise when audio outputs. The invention relates to an audio data decoding method and device for preventing the noise from generating. The data segments of normal audio frames are stored to be copied to the erroneous audio frames so that the erroneous audio frames are recognized as normal audio frames. Therefore, audio frames are prevented from losing and all audio frames are decoded. Thus, audio without noise are received by a user. The audio data decoding method and device use decoding technology improving user satisfaction.

Description

technical field [0001] Background technology of the present invention As a technology for decoding audio signals to output audio after receiving coded and transmitted audio signals during the transmission of audio data, it specifically relates to the process of decoding received audio signals and outputting them as audio Among them, a decoding method and device for preventing noise from being lost due to loss of audio frames. Background technique [0002] The frame structure of the audio signal using the audio standard of MP2 (MPEG-1 LayerII and MPEG-2LayerII), which is one of the multimedia file formats, is configured as follows figure 1 shown. And each audio frame includes a header data field and an SCF data field. [0003] While detailing it here, figure 1 As a structure representing an audio frame using the MP2 audio standard, the audio frame generally consists of a header part and a payload part. The header part 100 of the audio frame is a field for storing the basi...

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Application Information

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IPC IPC(8): G10L19/005
CPCG10L19/0017G10L19/005
Inventor 李庸俊
Owner HYUNDAI MOBIS CO LTD
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