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Method for encoding voice signal, method for decoding voice signal, and apparatus using same

A technology of speech signals and coding methods, applied in speech analysis, instruments, etc., to achieve high-quality speech and audio communication services and improve sound quality

Inactive Publication Date: 2014-09-03
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Limitations in bitrate and limitations in communication band exist in Code Excited Linear Prediction (CELP), which is mainly used in existing speech encoding / decoding, however, low bitrate already provides enough sound for dialogue quality

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  • Method for encoding voice signal, method for decoding voice signal, and apparatus using same
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  • Method for encoding voice signal, method for decoding voice signal, and apparatus using same

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Embodiment Construction

[0043] Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. When it is determined that a detailed description of a known configuration or function included in the present invention makes the gist of the present invention difficult to understand, its detailed description will not be given.

[0044] If it is mentioned that a first element is "connected" or "coupled" to a second element, it should be understood that the first element may be directly connected or coupled to the second element and may be connected or coupled to the second element via a third element.

[0045] Terms such as "first" and "second" may be used to distinguish one element from another. For example, an element referred to as a first element in the technical spirit of the present invention may be referred to as a second element, and may perform the same function.

[0046] A large-capacity signal can be processed with the development o...

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Abstract

The present invention relates to a method for encoding a voice signal, a method for decoding a voice signal, and an apparatus using the same. The method for encoding the voice signal according to the present invention, includes the steps of: determining an eco-zone in a present frame; allocating bits for the present frame on the basis of the location of the eco-zone; and encoding the present frame using the allocated bits, wherein the step of allocating the bits allocates more bits in the section in which the eco-zone is located than in the section in which the eco-zone is not located.

Description

technical field [0001] The present invention relates to techniques for processing speech signals, and more particularly, to methods and apparatus for variably allocating bits when encoding speech signals in order to address the pre-echo problem. Background technique [0002] With the recent development of networks, and the increase in users' demands for high-quality services, methods and devices for encoding / decoding voice signals from narrowband to broadband or ultra-wideband in a communication environment have been developed. [0003] Expansion of the communication band means that almost all sound signals up to music and mixed content and speech are included as encoding targets. [0004] Therefore, encoding / decoding methods based on signal transformation are used significantly. [0005] Limitations in bitrate and limitations in communication band exist in Code Excited Linear Prediction (CELP), which is mainly used in existing speech encoding / decoding, however, low bitrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/002
CPCG10L19/005G10L19/24G10L19/002G10L21/02G10L19/025
Inventor 李英汉郑奎赫姜仁圭田惠晶金洛榕
Owner LG ELECTRONICS INC
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