CN101202860A - Sound volume regulating method - Google Patents
Sound volume regulating method Download PDFInfo
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- CN101202860A CN101202860A CNA2006100707906A CN200610070790A CN101202860A CN 101202860 A CN101202860 A CN 101202860A CN A2006100707906 A CNA2006100707906 A CN A2006100707906A CN 200610070790 A CN200610070790 A CN 200610070790A CN 101202860 A CN101202860 A CN 101202860A
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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
The present invention relates to the control method that a kind of volume is regulated.
Background technology
Maturation along with digital television techniques, this year, China began to push forward comprehensively cable TV from the whole conversion of simulation-to-digital, the common people will listen to by cable digital TV and watch more colourful broadcast TV program, enjoy the integrated information service of variation, objectification, personalization.
The most of broadcasting station of China, TV station realize digitlization substantially at programme acquisition, making, broadcast, transmission link.The transmissible program capacity of cable TV distribution network will be increased to about 500 covers from about present 50 covers.But a large amount of reception links is user's a television set still to be simulated, so must solve the problem of watching of Digital Television by set-top box.
In the application process of set-top box, there are two commonplace problems: the sound size disunity that the digital audio and video signals that is each TV station plays is exported, the immediate problem of Chan Shenging is exactly to be the sound volume setting of main sound channel certain certain value like this, as 30, when changing the platform operation then, actual output volume between the different programs is may difference big especially, when connecting audio frequency multiplying arrangement such as power amplifier, even may cause user's hearing impairment; Another problem is, when volume value when 0～100 up increases step by step, volume value is more little, the sensation volume change is obvious more, volume value is big more, the sensation volume change is not obvious more.
For fear of the generation of above-mentioned two kinds of situations, if realize, not only may increase cost, and some function may realize reaching satisfied effect by hardware by hardware.For this reason, need come volume control function is regulated by software.
Summary of the invention
The present invention is in order to solve in the prior art because the sound of the audio signal output that each TV station plays size disunity, cause the bigger problem of actual output volume difference between the different programs when changing the platform operation, a kind of brand-new volume adjusting method is provided, by the different volume of the program settings of different TV stations is adjusted coefficient, make the volume value of each TV station's output acoustically roughly suitable from subjectivity, can not feel the abrupt change of volume, thereby effectively improve auditory effect.
For solving the problems of the technologies described above, the technical scheme that volume adjusting method of the present invention adopted mainly comprises the steps: at first, determines reference volume; Secondly, determine the volume adjustment coefficient of each programs according to described reference volume; Then, utilize described volume to adjust coefficient current volume value is adjusted, draw actual output volume value, the control terminal receiving equipment is according to described actual output volume value output audio signal.
Wherein, described reference volume is predefined maximum output volume, and corresponding max volume value is defined as 100.In the present invention with the maximum output volume of Chinese Central Television's program as described reference volume, the maximum output volume of other each programs is that standard adjusts accordingly with the max volume of the Chinese Central Television (CCTV).The specific implementation method is: regulate the output volume of other each programs, and the maximum output volume when the output volume and the Chinese Central Television (CCTV), when promptly described reference volume was suitable, its corresponding volume value was adjusted coefficient divided by the volume that the reference note value is this programs; Current volume value and volume are adjusted multiplication, promptly draw actual output volume value.
Described volume is adjusted coefficient be kept in the EEPROM register, in described register, store program identifier simultaneously, the corresponding different program channel of different identification symbol, and the volume of simultaneously corresponding this channel is adjusted coefficient.When the system start-up of terminal receiving equipment, in buffer, rebuild a volume adjustment coefficient table according to program identifier of storing in the EEPROM register and volume adjustment coefficient; When each switching channels, volume in the retrieval buffer is adjusted coefficient table, and when retrieving the identifier of current program, adjust the actual output volume of the current program of coefficient adjustment according to the pairing volume of described identifier, thereby volume cataclysm when effectively having avoided channel to switch influences the problem of user's auditory effect.
In order to guarantee volume value when 0～100 increases and decreases step by step, actual output volume can be linear change, and the present invention has also set volume and regulated fair curve, makes user and streamline workman when regulating program volume, and the increase and decrease of volume acoustically is linear.Described volume curve correction step can be adjusted between the coefficient step in above-mentioned volume and finish in advance, specifically may further comprise the steps: at first, comprise N node of two-end-point 0 to selection between the max volume value 100, as the correction node of volume curve; Secondly, measure the sound output of a described N node, so the correction reference value of definite each point volume curve, make revised volume curve be linear change in each segment, promptly along with the increase and decrease step by step of volume value, sound output is linear to be increased and decreased; Then, draw the volume correction function of each section curve: the origin of curve+(current volume-origin of curve) * slope of curve; At last, draw the volume correction value by described volume correction function, as current volume value.
Wherein, described N is the natural number more than or equal to 3.In the present invention, get N=5, corresponding correction node is respectively 0,25,50,75,100; The correction reference value of each point volume curve is respectively 0,10,30,60,100.Adjusted actual output volume value is write the volume control register, and then the control power amplifier is realized the perfect reproduction of program audio according to described actual output volume value output audio signal.
Compared with prior art, advantage of the present invention and good effect are: the present invention adjusts coefficient by the program settings max volume to some king-sized TV station of volume, just its output max volume is decayed or limits, make the volume value of each TV station's output acoustically roughly suitable from subjectivity, like this when the user changes the platform operation, can not feel and the abrupt change of volume improve auditory effect.Simultaneously in order to guarantee that volume value is when 0～100 increases and decreases step by step, actual output volume can be linear change, the present invention has also set volume and has regulated fair curve, makes user and streamline workman when regulating program volume, guarantees that acoustically the increase and decrease of volume is linear.All these functions all realize that by software therefore, the present invention is under the situation that does not increase any hardware cost, for the user has created better audiovisual experience and bigger use value.
Description of drawings
Fig. 1 is the software flow block diagram of volume adjusting method among the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done explanation in further detail.
The present invention is suitable substantially in order to ensure the volume of each TV station's output in the channel handoff procedure, and increase and decrease step by step along with volume value, the audio power of actual output is approximately linear to be changed, and has adopted volume adjustment factor modification method and volume fair curve method of adjustment respectively.
Embodiment one, and volume fair curve method of adjustment adopts following steps to realize:
(a1) 0 to N node selecting to comprise two-end-point between the max volume value, as the correction node of volume curve; Described N is the natural number more than or equal to 3;
(b1) sound output of the described N of a measurement node, determine the correction reference value of each point volume curve, make revised volume curve be approximately linear in each segment and change, promptly along with the increase and decrease step by step of volume value, sound output is the approximately linear increase and decrease;
(c1) draw the volume correction function of each section curve: the origin of curve+(current volume-origin of curve) * slope of curve;
(d1) with the described volume correction function of current volume value substitution, draw the volume correction value, as revised current volume value.
In the present invention, according to the voice output curve, get N=5, corresponding correction node is respectively 0,25,50,75,100, and wherein, 100 is the max volume value.Adjust the volume value of its actual output, make its size be respectively 0,10,30,60,100, i.e. the correction reference value of each point volume curve at the actual output volume of these 5 nodes.According to described correction node with revise the slope of curve that reference value is determined each section curve, and then current volume is carried out linearity correction, draw the volume correction value by described volume correction function.Like this, when volume value when 0 is increased to 100 step by step, be linear increasing from the subjective acoustic response of people's ear, thereby effectively improved user's auditory effect.Simultaneously, adopt this volume fair curve method of adjustment can also effectively avoid going up the dead of night that night, small volume is adjusted the excessive problem of volume change.
To write in the volume control register through the corrected volume value of volume fair curve, and just can obtain our desired volume control effect.
Embodiment two, and volume adjustment factor modification method specifically adopts following steps to realize:
(a2) determine reference volume; Described reference volume is predefined maximum output volume, corresponding max volume value 100;
(b2) determine that according to described reference volume the volume of each programs adjusts coefficient; The specific implementation method is: regulate the output volume of each programs, when output volume was suitable with described reference volume, its corresponding volume value was divided by the reference note value, and promptly the max volume value 100, and promptly the volume of programs is adjusted coefficient for this reason;
(c2) utilize described volume to adjust coefficient current volume value is adjusted, draw actual output volume value, the control terminal receiving equipment is according to described actual output volume value output audio signal; The specific implementation method is: current volume value and volume are adjusted multiplication, promptly draw actual output volume value.
For being adjusted coefficient, the volume of each programs distinguished, the corresponding unique program identifier of every programs, described program identifier and the volume adjustment coefficient corresponding with it all are stored in the EEPROM register, when the system start-up of terminal receiving equipment, in the BUFFER buffer, rebuild a volume adjustment coefficient table according to program identifier of storing in the EEPROM register and volume adjustment coefficient; When each switching channels, the volume in the retrieval BUFFER buffer is adjusted coefficient table, and when retrieving the identifier of current program, adjusts the actual output volume of the current program of coefficient adjustment according to the pairing volume of described identifier.
In the present invention, with the max volume of Chinese Central Television's program reference volume, and the max volume of regulating other each programs with this reference volume, and determine that the volume of other each programs adjusts coefficient as other all program reference.With Inner Mongol platform is example, and when the volume adjustment is increased to 50, just the max volume with the Chinese Central Television (CCTV) is suitable for the volume of Inner Mongol platform.So the max volume of Inner Mongol platform is exactly 50.Like this, the volume adjustment factor of Inner Mongol platform is exactly 1/2.That is to say that if current volume value is 50, when switching to the Chinese Central Television (CCTV), the value that writes the volume control register is exactly 50 so; But when switching to Inner Mongol TV station, the value that writes the volume control register is not 50, but 50 multiply by the volume adjustment factor 1/2 of this programs, promptly 25.Like this, the volume of the Inner Mongol platform and the Chinese Central Television (CCTV) just can be consistent, thereby makes the volume value of each TV station output acoustically roughly suitable from subjectivity, can not feel the abrupt change of volume, has effectively improved user's auditory effect.
Embodiment three, and two problems of volume cataclysm combined above-mentioned volume fair curve method of adjustment and volume adjustment factor modification method when the present invention regulated nonlinear change and changes platform in order to solve volume simultaneously, had realized the perfection output of audio signal.
Its volume adjusting method specifically may further comprise the steps as shown in Figure 1:
(a3), determine the max volume adjustment factor value of all each sound channels of channel by the relevant tester of the manufacturer of digital television terminal system; And be respectively 0,25,50,75,100 as volume curve correction node with the volume value size, and measure the sound output of described 5 nodes, determine each point volume curve correction reference value with this;
(b3) determine the access data structure of the max volume adjustment factor table of all each sound channels of channel by the software developer, regulate the program identifier ProgId and the volume of channel as certain volume and adjust coefficient MaxVolScal etc., and each section curve volume correction function formula;
(c3) by the manufacturer of digital television terminal system volume is adjusted value in the coefficient table as the preset reference value, when production, write in the eeprom memory, and guarantee behind the program searching or behind the reset operation, the volume adjustment factor table of storage still remains unchanged;
(d3) at every turn when digital television system starts, all will adjust coefficient MaxVolScal according to program identifier ProgId that provides in the eeprom memory and volume, in BUFFER, rebuild a volume and adjust coefficient table;
(e3) read current volume value CurVolume, judge residing segment, the pairing volume correction function of substitution respective bins section formula utilizes the volume fair curve that current volume is revised, and the volume value that obtains after the correction is as current volume;
(f3) volume among the retrieval BUFFER is adjusted coefficient table, if do not retrieve the program identifier ProgId of current program, then the current volume of current program is not adjusted; If retrieve the program identifier ProgId of current program, then the current volume of current program is adjusted: Volume=CurVolume*MaxVolScal according to retrieving volume adjustment coefficient MaxVolScal;
(g3) the volume value Volume that obtains after the adjustment is the volume value of user expectation, writes the volume control register by CPU, control power amplifier output audio signal.
Regulate if the program volume in the volume reconciliation statement changes or have new-programme need carry out volume, the user can input password at any time and enter volume and regulate menu and regulate, and newly-increased program will add volume automatically to and adjust in the coefficient table.Certainly, if conditions being possessed also can upgrade volume adjustment factor table by the mode of aerial upgrade.
Even volume adjusting method proposed by the invention is when TV programme changes, can not in volume adjustment factor table, find corresponding volume adjustment factor, system does not just adjust volume yet, so, can not cause bad influence to user's use.
Simultaneously, the present invention can also provide the user interface of volume coefficient adjustment, and the user can adjust the volume adjustment factor of each channel according to the acoustic response curve of oneself.Like this, under the prerequisite that does not increase any hardware cost, can allow the user obtain more perfectly seeing and hearing enjoyment, realize that bigger user is worth.
Certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (10)
1. volume adjusting method may further comprise the steps:
(1-1) determine reference volume;
(1-2) determine that according to described reference volume the volume of each programs adjusts coefficient;
(1-3) utilize described volume to adjust coefficient current volume value is adjusted, draw actual output volume value, the control terminal receiving equipment is according to described actual output volume value output audio signal.
2. volume adjusting method according to claim 1 is characterized in that: described reference volume is predefined maximum output volume, corresponding max volume value.
3. volume adjusting method according to claim 2 is characterized in that: with the maximum output volume of Chinese Central Television's program as described reference volume.
4. volume adjusting method according to claim 1 and 2, it is characterized in that: in described step (1-2), regulate the output volume of each programs, when output volume was suitable with described reference volume, its corresponding volume value was adjusted coefficient divided by the volume that the reference note value is this programs; In described step (1-3), current volume value and volume are adjusted multiplication, promptly draw actual output volume value.
5. volume adjusting method according to claim 4, it is characterized in that: described volume is adjusted coefficient and is kept in the register, in described register, store program identifier simultaneously, the corresponding different program channel of different identification symbol, and the volume of simultaneously corresponding this channel is adjusted coefficient.
6. volume adjusting method according to claim 5 is characterized in that: when the system start-up of terminal receiving equipment, rebuild a volume adjustment coefficient table according to program identifier of storing in the register and volume adjustment coefficient in buffer; When each switching channels, the volume in the retrieval buffer is adjusted coefficient table, and when retrieving the identifier of current program, adjusts the actual output volume of the current program of coefficient adjustment according to the pairing volume of described identifier.
7. volume adjusting method according to claim 1 is characterized in that: in the following curve correction of the preceding increase of described step (1-1) step:
(2-1) 0 to N node selecting to comprise two-end-point between the max volume value, as the correction node of volume curve;
(2-2) sound output of the described N of a measurement node, and then the correction reference value of definite each point volume curve makes revised volume curve be linear change in each segment, and promptly along with the increase and decrease step by step of volume value, sound output is linear to be increased and decreased;
(2-3) draw the volume correction function of each section curve: the origin of curve+(current volume-origin of curve) * slope of curve;
(2-4) draw the volume correction value, as current volume value by described volume correction function.
8. volume adjusting method according to claim 7 is characterized in that: described N is the natural number more than or equal to 3.
9. volume adjusting method according to claim 8 is characterized in that: described N gets 5, and it is the max volume value that corresponding correction node is respectively 0,25,50,75,100,100; The correction reference value of each point volume curve is respectively 0,10,30,60,100.
10. according to claim 1 or 7 described volume adjusting methods, it is characterized in that: adjusted actual output volume value is write the volume control register.
Priority Applications (1)
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|---|---|---|---|
| CNA2006100707906A CN101202860A (en) | 2006-12-13 | 2006-12-13 | Sound volume regulating method |
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| CNA2006100707906A CN101202860A (en) | 2006-12-13 | 2006-12-13 | Sound volume regulating method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742181B (en) * | 2008-11-24 | 2012-02-01 | 深圳Tcl新技术有限公司 | Method and device for regulating sound |
| CN103262573A (en) * | 2010-12-14 | 2013-08-21 | Jvc建伍株式会社 | Sound reproduction device, reproduction sound adjustment method, acoustic property adjustment device, acoustic property adjustment method, and computer program |
| CN103297832A (en) * | 2013-05-10 | 2013-09-11 | 深圳创维数字技术股份有限公司 | Method and terminal for controlling volume of programs |
| CN103377093A (en) * | 2012-04-24 | 2013-10-30 | 联想(北京)有限公司 | Multimedia synchronizing method for multiple-system device and electronic device |
| CN103686015A (en) * | 2013-12-20 | 2014-03-26 | 乐视致新电子科技（天津）有限公司 | Volume adjustment method and system |
| CN103905849A (en) * | 2014-04-10 | 2014-07-02 | 深圳市茁壮网络股份有限公司 | Set top box volume adjusting method and system |
| CN104683920A (en) * | 2015-01-30 | 2015-06-03 | 惠州市德赛西威汽车电子有限公司 | Method and device for realizing smooth rise and fall of sound volume |
| CN105006240A (en) * | 2015-06-12 | 2015-10-28 | 惠州Tcl移动通信有限公司 | Music sound control method and system based on audio playing device |
| CN105635911A (en) * | 2016-01-26 | 2016-06-01 | 广东欧珀移动通信有限公司 | Volume output control method and device |
| CN105681876A (en) * | 2015-12-30 | 2016-06-15 | 惠州市伟乐科技股份有限公司 | Audio loudness uniformity control method and system of radio and television broadcasting system |
| CN108279861A (en) * | 2017-08-31 | 2018-07-13 | 腾讯科技（深圳）有限公司 | volume adjusting method, device and storage medium |
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2006
- 2006-12-13 CN CNA2006100707906A patent/CN101202860A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742181B (en) * | 2008-11-24 | 2012-02-01 | 深圳Tcl新技术有限公司 | Method and device for regulating sound |
| CN103262573A (en) * | 2010-12-14 | 2013-08-21 | Jvc建伍株式会社 | Sound reproduction device, reproduction sound adjustment method, acoustic property adjustment device, acoustic property adjustment method, and computer program |
| CN103262573B (en) * | 2010-12-14 | 2015-03-04 | Jvc建伍株式会社 | Sound reproduction device, reproduction sound adjustment method, acoustic property adjustment device, acoustic property adjustment method, and computer program |
| CN103377093A (en) * | 2012-04-24 | 2013-10-30 | 联想(北京)有限公司 | Multimedia synchronizing method for multiple-system device and electronic device |
| CN103297832A (en) * | 2013-05-10 | 2013-09-11 | 深圳创维数字技术股份有限公司 | Method and terminal for controlling volume of programs |
| CN103297832B (en) * | 2013-05-10 | 2017-03-29 | 深圳创维数字技术有限公司 | A kind of method and terminal of control program volume |
| CN103686015A (en) * | 2013-12-20 | 2014-03-26 | 乐视致新电子科技（天津）有限公司 | Volume adjustment method and system |
| CN103905849A (en) * | 2014-04-10 | 2014-07-02 | 深圳市茁壮网络股份有限公司 | Set top box volume adjusting method and system |
| CN103905849B (en) * | 2014-04-10 | 2019-04-26 | 深圳市茁壮网络股份有限公司 | A kind of set-top box volume adjusting method and system |
| CN104683920A (en) * | 2015-01-30 | 2015-06-03 | 惠州市德赛西威汽车电子有限公司 | Method and device for realizing smooth rise and fall of sound volume |
| CN105006240A (en) * | 2015-06-12 | 2015-10-28 | 惠州Tcl移动通信有限公司 | Music sound control method and system based on audio playing device |
| CN105006240B (en) * | 2015-06-12 | 2018-10-26 | 惠州Tcl移动通信有限公司 | A kind of musical sound control method and system based on audio-frequence player device |
| CN105681876A (en) * | 2015-12-30 | 2016-06-15 | 惠州市伟乐科技股份有限公司 | Audio loudness uniformity control method and system of radio and television broadcasting system |
| CN105635911A (en) * | 2016-01-26 | 2016-06-01 | 广东欧珀移动通信有限公司 | Volume output control method and device |
| CN108279861A (en) * | 2017-08-31 | 2018-07-13 | 腾讯科技（深圳）有限公司 | volume adjusting method, device and storage medium |
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