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Volume limiting method and system

A volume and voice technology, which is applied in the volume limit method and system field, can solve the problems of not being able to achieve auditory experience and not truly reflecting the effect of human ear volume, and achieve the effect of improving voice quality

Active Publication Date: 2008-11-26
TENCENT TECH (SHENZHEN) CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above scheme is firstly: when judging whether to adjust the volume, the absolute amplitude value data of the sample point is directly compared with an optimal value, which cannot truly reflect the effect of the volume level felt by the human ear, because the human ear auditory responses are based on relative changes in sound, not absolute changes
Secondly: when adjusting, the amplitude value data of the source sample point is directly multiplied by a coefficient as the adjusted output. This linear adjustment cannot achieve the real auditory experience of the human ear.

Method used

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  • Volume limiting method and system

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Embodiment Construction

[0013] The present invention will be further described below with reference to the drawings and embodiments.

[0014] Such as figure 1 The flow chart of the overall scheme of a volume restriction method is shown. First, the amplitude value data of the sample point of the listening terminal is converted to obtain a relative intensity value, and then it is judged whether the relative intensity value exceeds the standard, and finally the relative intensity The value is adjusted accordingly and limited to a standard value.

[0015] The corresponding adjustment includes: calculating the amplitude value diff to be adjusted, and then adjusting the original amplitude value data of the voice sample point according to the amplitude value diff to be adjusted.

[0016] The conversion operation is to express the amplitude value data of the sample point in the form of a relative value with a logarithmic scale, and the method is to perform A / D conversion on the original amplitude value of the i...

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Abstract

This invention relates to volume limit method and system, wherein, the method comprises the following steps: Firstly processing the receive end sound sample point resonance data to get one relative intensity value; then judging whether the relative intensity is over standard; finally adjusting the relative intensity near one standard value. The said conversion operation is to express the sample point by relative value. The said system comprises signal collector, A / D converter, processor and D / A converter, wherein, the said parts are connected in order. The advantages of this invention are the following: the method can effectively control the limit volume to ensure the processed volume quality.

Description

Technical field [0001] The present invention relates to broadcast communication technology, and in particular to a method and system for volume limitation. Background technique [0002] In a video conferencing system, the destination client usually receives voices from multiple source client terminals, and the different-source client terminal often causes the destination client terminal to hear sounds of different volume due to the different volume settings of their PCs. In order to hear the voice of the source client at the lowest volume, the destination client usually increases the local system volume. In a meeting, if the local system volume of some source clients is relatively high, it will cause the destination client to have too high volume, thereby affecting the user's hearing effect. This situation occurs in all systems that use volume control, so it is necessary to perform volume limit operations on the destination user side. [0003] At present, the solution for volume ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03G3/20H04N7/15
Inventor 王麒
Owner TENCENT TECH (SHENZHEN) CO LTD
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