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Sound volume regulating method

A volume adjustment and volume technology, which is applied to TVs, color TV parts, electrical components, etc., can solve the problems of large output volume differences and inconsistent sound levels, so as to achieve the best audio-visual experience, improve the auditory effect, and maximize the use value effect

Inactive Publication Date: 2008-06-18
HISENSE BROADBAND MULTIMEDIA TECH BVI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the output volume of the audio signal played by each TV station is not uniform, resulting in a large difference in the actual output volume between different programs during the channel-changing operation, the present invention provides a brand-new volume adjustment Method, by setting different volume adjustment coefficients for the programs of different TV stations, the volume values ​​output by each TV station are roughly equivalent in terms of subjective hearing, and the sudden change of volume will not be felt, thereby effectively improving the auditory effect

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  • Sound volume regulating method

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Embodiment 1

[0016] Embodiment 1, the volume correction curve adjustment method is realized by the following steps:

[0017] (a1) Select N nodes including both ends between 0 and the maximum volume value, as the correction node of the volume curve; the N is a natural number greater than or equal to 3;

[0018] (b1) Measure the audio output power of the N nodes, determine the corrected reference value of the volume curve at each point, so that the corrected volume curve changes approximately linearly in each interval, that is, as the volume value increases and decreases step by step, The audio output power increases and decreases approximately linearly;

[0019] (c1) get the volume correction function of each segment curve: curve starting point+(current volume-curve starting point)*curve slope;

[0020] (d1) Substituting the current volume value into the volume correction function to obtain a volume correction value as the corrected current volume value.

[0021] In the present invention,...

Embodiment 2

[0023] Embodiment 2, the method for correcting the volume adjustment coefficient is implemented by the following steps:

[0024] (a2) Determine the reference volume; the reference volume is a preset maximum output volume, corresponding to a maximum volume value of 100;

[0025] (b2) Determine the volume adjustment coefficient of each set of programs according to the reference volume; the specific implementation method is: adjust the output volume of each set of programs, when the output volume is equivalent to the reference volume, divide the corresponding volume value by the reference volume value, that is, the maximum volume value of 100, which is the volume adjustment coefficient of this program;

[0026] (c2) Use the volume adjustment coefficient to adjust the current volume value to obtain the actual output volume value, and control the terminal receiving device to output the audio signal according to the actual output volume value; the specific implementation method is: ...

Embodiment 3

[0029] Embodiment 3: In order to simultaneously solve the two problems of volume adjustment nonlinear change and volume sudden change when changing channels, the present invention combines the above-mentioned volume correction curve adjustment method and volume adjustment coefficient correction method to realize the perfect output of audio signals.

[0030] Its volume adjustment method is as follows figure 1 As shown, it specifically includes the following steps:

[0031](a3) The relevant test personnel of the manufacturer of the digital TV terminal system determine the maximum volume adjustment coefficient value of each channel of all channels; and the volume value is respectively 0, 25, 50, 75, and 100 as the volume curve correction node , measuring the audio output power of the five nodes, so as to determine the reference value of volume curve correction at each point;

[0032] (b3) The access data structure of the maximum volume adjustment coefficient table of each sound ...

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Abstract

The invention discloses a sound volume adjusting method, aiming at solving the problem of swiftly changed volume when changing a channel, in particular to the following steps: firstly determining a reference volume; secondly determining the volume adjusting coefficients of each set of program according to the reference volume; then utilizing the volume adjusting coefficients to adjust the current volume to get an actual outputted volume value and control a terminal receiving device to output an audio signal according to the actual outputted volume value. Meanwhile, in order to ensure that the actual outputted volume value varies linearly when the volume value gradually increases and reduces from 0 to 100 step by step, the invention also sets a volume adjusting correcting curve. The invention determines the curve slope of each section of curve through selecting a correcting node and measuring a correcting reference value and then gets a volume correcting value through carrying through linear correction on the current volume through a volume correcting function; therefore, when users and assembly line workers adjust the program volume, the invention can ensure that the increasing and reducing on the acoustical volume is linearly changed, thus effectively improving the listening effect of a terminal receiving device.

Description

technical field [0001] The invention relates to a control method for volume adjustment. Background technique [0002] With the maturity of digital TV technology, this year my country began to comprehensively promote the conversion of cable TV from analog to digital. People will listen to and watch more colorful radio and TV programs through cable digital TV, and enjoy diversified, object-oriented and personalized comprehensive information. Serve. [0003] Most of my country's radio stations and TV stations have basically realized digitalization in program collection, production, broadcasting and transmission. The program capacity that can be transmitted by the cable TV distribution network will increase from about 50 sets at present to about 500 sets. However, a large number of receiving links, that is, the user's TV set is still analog, so the problem of watching digital TV must be solved through a set-top box. [0004] In the application process of the set-top box, there...

Claims

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Application Information

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IPC IPC(8): H04N5/60H04N5/00
Inventor 朱敏佘智勇邓泽学
Owner HISENSE BROADBAND MULTIMEDIA TECH BVI
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