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Voice communication method and equipment

A voice communication and voice signal technology, applied in the field of communication, can solve problems such as narrow voice range, redundant coding range, and traffic consumption, and achieve the effects of saving coding bits, improving coding efficiency, and reducing network traffic

Active Publication Date: 2015-06-03
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in these voice communication methods, the bandwidth (frequency range) of the coding object is fixed. Once the bandwidth range of the coding object is selected, the coding range is fixed, and this coding range cannot reflect the characteristics of human speech
In fact, everyone has a very narrow range of speech (e.g. males have a low voice band range and have difficulty producing high tones, women have difficulty producing low tones, etc.), so a large part of the coding range is redundant for voice communication , and the redundancy of speech coding will bring a lot of traffic consumption

Method used

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Embodiment 1

[0036] Aiming at the problems existing in the prior art, Embodiment 1 of the present invention provides a voice communication method, which is applied to a coding network including at least a voice signal sending end and a voice signal receiving end, such as figure 2 As shown, the voice communication method may include the following steps:

[0037] In step 201, the voice signal sending end determines the range of the voice frequency band.

[0038] In the embodiment of the present invention, the process for the voice signal sending end to determine the range of the voice frequency band specifically includes but is not limited to the following methods: when the user performs voice communication, the voice signal sending end performs spectrum analysis on the voice signal, and uses time-frequency conversion to convert the voice The signal is converted from the time domain to the frequency domain, and the voice energy of each frequency band is counted; after that, the voice signal...

Embodiment 2

[0055] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a voice communication device, such as image 3 As shown, the device specifically includes: a speech frequency band width analysis and learning module 11 for determining the speech band range; a speech band coding range selection module 12 for determining the frequency band limit data in the speech band range; a speech encoding module 13 for The voice signal is coded by using the frequency band limitation data, and the coded voice signal is sent to the voice signal receiving end.

[0056]In the embodiment of the present invention, the speech frequency bandwidth analysis and learning module 11 is specifically used for performing spectrum analysis on the speech signal, using a time-frequency transformation method to convert the speech signal from the time domain to the frequency domain, and counting the speech energy of each frequency band; The voice energy of the ...

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Abstract

The invention discloses a voice communication method and equipment. The method comprises the following steps that a voice signal sending end determines a voice frequency band range; the voice signal sending end determinates frequency band limitation data in the audio frequency band range; the voice signal sending end uses the frequency band limitation data for carrying out coding processing on the voice signals, and sends the voice signals subjected to coding processing to the voice signal receiving end. According to the embodiment of the invention, on the basis of the characteristic of high-degree concentration of the user voice frequency range, the voice frequency band range is determined, in addition, the frequency band limitation data in the voice frequency band range is determined, and in addition, the frequency band limitation data is used for carrying out coding processing on the voice signals, so that the coding bits are put onto the most common frequency band of the user, the coding bit number is saved, the coding efficiency is improved, the redundancy in the coding range is avoided, and the network flow rate of the voice communication is reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a voice communication method and device. Background technique [0002] Voice communication has become an indispensable part of people's lives. Based on voice communication, there are various forms such as cellular telephone, wired telephone, and IP telephone. Such as figure 1 As shown, in these voice communication methods, the caller converts the voice signal into a coded signal through Codec, and these coded signals are transmitted to the destination of the call through various networks, decoded by Codec, and finally sent to another caller. [0003] In the above-mentioned speech communication mode, different coding methods can be used, for example, a coding method of transform domain based on auditory masking effect, a coding method of code-excited linear prediction based on generation model, and the like. The core of the above encoding method is: after processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/02
Inventor 俞小良刘霖
Owner CHINA MOBILE COMM GRP CO LTD
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