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Mute frame transmission control method and voice apparatus

A control method and technology of mute frame, which are applied in the direction of telephone structure, coupling substation interface circuit, etc., can solve the problems affecting effective bandwidth utilization rate and system performance, occupied bandwidth, and no control of mute frame, so as to improve effective bandwidth. The effect of utilization

Inactive Publication Date: 2008-09-03
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The defect of the existing technology is: in the existing VAD technology and CNG technology, after the silence frame is generated, it is sent to the receiving terminal without control
But the disadvantage is that it brings additional system overhead, especially for data signals with a small amount of data such as silent frames. If each of the consecutive multiple silent frames generated during a silent period has to go through the RTS / CTS mechanism Conflict avoidance also takes up a lot of bandwidth, which affects effective bandwidth utilization and system performance

Method used

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  • Mute frame transmission control method and voice apparatus
  • Mute frame transmission control method and voice apparatus
  • Mute frame transmission control method and voice apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment provides a method for suppressing silence by controlling the sending time of the silence frame, such as figure 1 as shown,

[0020] Step 101, the sending terminal detects the voice, and when it detects that the voice is silent, executes step 102; when it detects that the voice is an active voice, the active voice signal is encoded for active voice, and the active voice frame is generated and sent to the receiving terminal .

[0021] Step 102, generating multiple silent frames. The silent frame carries noise parameters capable of generating comfort noise, and the specific generation method may be performed according to an existing algorithm for generating silent frames.

[0022] Step 103, sending the multiple silent frames generated in step 102 at the preset silent frame sending time. Specifically, a silent frame sending period may be preset, and a plurality of silent frames are sent at a time confirmed by the silent frame sending period. For example,...

Embodiment 2

[0026] In Embodiment 1, since the silence frame in the silence period is sent at intervals, the receiving terminal will neither receive a silence frame nor an activity during the two silence frame transmission intervals in the silence period Voice frames cause the receiver to generate a silent period, that is, the receiver user cannot hear any sound, which affects the call quality and hearing experience. This embodiment proposes a silent frame transmission control method to solve the above problems, such as figure 2 as shown,

[0027] Step 201, the sending terminal detects the voice, and when it detects that the voice is silent, executes step 202; when it detects that the voice is active voice, performs active voice encoding on the active voice, generates an active voice frame, and sends it to the receiving terminal.

[0028] Step 202, generating multiple silent frames. The silence frame carries noise parameters capable of generating comfort noise, and the specific generati...

Embodiment 3

[0035] The silent frame sending control methods described in Embodiments 1 and 2 all need to send multiple silent frames, but this embodiment provides a silent frame sending control method that only needs to send one silent frame. Such as image 3 as shown,

[0036] Step 301, the sending terminal detects the voice, and when it detects that the voice is silent, executes step 302; when it detects that the voice is active voice, performs active voice encoding on the active voice, generates an active voice frame, and sends it to the receiving terminal.

[0037] Step 302, generating a silent frame, which carries noise parameters capable of generating comfort noise. Specifically, multiple silences or one silence may be generated according to an existing algorithm for generating silences.

[0038]Step 303, sending a silent frame at the preset silent frame sending time. Specifically, one silence frame generated in step 302 or one silence frame among multiple generated silence frame...

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Abstract

The invention provides a mute frame transmission control method and a speech apparatus, wherein, the method comprises that: a sending terminal detects the speech and generates the mute frame upon detecting the speech as mute, and the mute frame carries noise parameters capable of generating comfortable noises; the mute frame is send at the preset time; and a receiving terminal receives the mute frame and generates comfortable noises according to the noise parameters in the mute frame. The speech apparatus includes a communication module used for receiving and sending the speech frame, a mute frame generation module used for creating the mute frame based on the mute, a comfortable noise generation module used for generating comfortable noises according to the noise parameters in the mute frame. Because the sending time of the mute frame is controlled in sending the mute frame, thus not occupying large channel band-width even in mechanism and increasing effective band width utilization ratio.

Description

technical field [0001] The present invention relates to a silent frame transmission control method and a voice device, in particular to a silent frame transmission control method and a voice device for improving effective bandwidth utilization by controlling the transmission time of a silent frame in a wireless communication system, belonging to The field of wireless voice communication. Background technique [0002] In the voice communication process, the voice of the sending terminal includes a large number of silence periods, and the silence collected during this period does not have substantial voice information for transmission, thus causing a waste of bandwidth resources. In order to improve effective bandwidth utilization, the prior art mainly adopts a voice activity detection (Voice Activity Detect, VAD for short) technology or silence suppression technology. The specific method is to detect the voice before sending, suppress it when silence is detected, and not sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/19H04M1/20H04M1/74
Inventor 周文辉黄宇红王磊卢美莲
Owner CHINA MOBILE COMM GRP CO LTD
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