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Coding method and system for voice data

A voice data and coding method technology, applied in the field of voice data coding methods and systems, can solve problems such as poor user experience, inability to guarantee coding efficiency and voice quality, and achieve the effects of reducing errors and optimizing coding parameters

Active Publication Date: 2019-05-17
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the individual differences in the voice characteristics of different languages ​​and users, the same encoding parameters are used to encode the voice data of all languages ​​and users, which cannot guarantee the encoding efficiency and voice quality, and the user experience is poor.

Method used

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  • Coding method and system for voice data
  • Coding method and system for voice data
  • Coding method and system for voice data

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Embodiment Construction

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0031] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0033] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the descript...

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Abstract

The embodiment of the invention discloses an encoding method and a system of speech data. The method includes: a communication terminal extracts speech characteristic vectors and sends the vectors to an analytic server; the analytic server calculates N speech characteristic vectors by employing a clustering algorithm based on distance, and new encoding and decoding parameters are obtained and sent to the communication terminal as encoding parameters and sent to an opposite-terminal communication terminal as decoding parameters; the encoding parameters of an encoder in the communication terminal are updated to new encoding and decoding parameters by the communication terminal, and the decoding parameters of a decoder in the opposite-terminal communication terminal are updated to new encoding and decoding parameters by the opposite-terminal communication terminal; the encoder in the communication terminal performs encoding of the speech data acquired by the communication terminal by employing the updated encoding parameters and transmits codes to the opposite-terminal communication terminal, speech code stream data is obtained, and the decoder in the opposite-terminal communication terminal performs decoding of the speech code stream data by employing the updated decoding parameters. According to the method and the system, the encoding efficiency and speech quality of speech coding can be improved.

Description

technical field [0001] The invention relates to communication technology, in particular to a voice data encoding method and system. Background technique [0002] With the continuous development of speech coding technology, speech coding methods are gradually enriched. From G.711 coding to the latest Opus coding, while the speech coding efficiency is improved, the computational complexity is also increasing rapidly, and the hardware and software are more difficult to implement. . Communication terminals, especially embedded mobile terminals, are limited by factors such as calculation, storage, power consumption, volume, and cost, and there are many limitations in introducing complex voice coding methods. [0003] Among the various existing speech coding methods, the speech coding method based on the G.729 protocol uses 8 kHz, sampling, and 16-bit linear pulse code modulation (PCM) to quantize the analog signal of the input speech property. The algorithm used by the G.729 pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/00G10L19/07H04M1/253
Inventor 屈振华曹磊龙显军李慧云杨新章郭英尹梅马涛陈珣
Owner CHINA TELECOM CORP LTD