CN102025946A - Volume control method and digital television all-in-one machine utilizing same - Google Patents
Volume control method and digital television all-in-one machine utilizing same Download PDFInfo
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Abstract
The invention is suitable of the technical field of digital televisions and provides a volume control method and a digital television all-in-one machine utilizing the same. The method comprises the following steps of: a, receiving a channel switching command; if so, going to the step b; if not, going to the step c; b, calculating a difference value between a volume loudness value of a current channel and the volume loudness value of a channel before switching, and adjusting a sound gain value of the current channel according to the difference value; and c, calculating the difference value between the volume loudness value of a currently displaying audio frame and the volume loudness value of the previous audio frame, and adjusting the sound gain value of the currently displaying audio frame according to the difference value. The technical scheme provided in the invention ensures that the digital television all-in-one machine can automatically adjust the volume loudness difference when the channel is switched or a program is inter-cut, the availability of a product is enhanced, and better use experience is provided to users.
Description
Technical field
The invention belongs to the digital television techniques field, relate in particular to a kind of method for controlling volume and adopt the digital TV integrated machine of this method.
Background technology
At present, along with the development of television industries, especially along with the popularizing of Digital Television, the channel that TV can be watched gets more and more.Because the method difference that each TV station programmes, volume during such as coding does not have unified standard, therefore can appear at when switching between different channel, switch the new channel sound in back and can become big suddenly, perhaps the sound that breaks for commercialsy during broadcast program becomes big suddenly, especially in the relatively more quiet period at night, the unexpected variation of this sound is more obvious, and this has brought certain puzzlement for use of user.
For simulated television, because the loud I of simulation is directly to judge from signal amplitude, therefore general television set chip has AVC (automatic sound control) function, AVC is according to the voice signal amplitude of input, the automatic equalization wave volume, and digital TV integrated machine can't be judged the volume of current channel/program by signal amplitude because entering the signal of chip is digital signal, and therefore above method is inapplicable.
Existing digital TV set-top box is by send the method for the privately owned descriptor of volume in TS (transport stream), come the volume between the balanced different channel to change suddenly, this method is not to describe the volume of sound itself, therefore can't handle the sound sudden change that causes because break for commercialsy in the same channel.The method that sends the privately owned descriptor of volume in addition in TS stream is not that standard defines, but self-defining by each operator, and when set-top box customizes specific implementation, this is feasible in the set-top box market of selling of mainly calling for bid by operator.And digital TV integrated machine orients towards the whole country, sell in the retail market, and there is operator of hundreds of family in the whole nation, therefore can not use the method for this customization.
Therefore, be necessary to provide a kind of technical scheme, can realize that digital TV integrated machine can adjust the sound of different channel/program, occur with the situation that prevents the sound sudden change.
Summary of the invention
The object of the present invention is to provide a kind of method for controlling volume and adopt the digital TV integrated machine of this method, be intended to solve the self-adjusting problem of digital TV integrated machine volume.
The present invention is achieved in that a kind of method for controlling volume, and described method comprises:
A, receive channel switching instruction? if change step b, otherwise change step c;
The difference of the volume loudness value of channel is adjusted the sound yield value of current channel according to described difference before b, the volume loudness value of calculating current channel and the switching;
The difference of the volume loudness value of c, the volume loudness value of calculating current audio plays frame and a last audio frame is adjusted the sound yield value of described current audio plays frame according to described difference.
Wherein step b specifically comprises:
B1, the voice data of described current channel is decoded, obtain the volume loudness value of described current channel;
The difference of the volume loudness value of channel before b2, the volume loudness value of calculating described current channel and the switching, described absolute difference and preset threshold value are compared, if described absolute difference is greater than described threshold value, then the sound yield value of channel before the described switching is deducted value after the described difference as adjusted sound yield value.
Wherein also comprise before the step b after the step a:
Voice data to channel before the described switching is decoded, and obtains the volume loudness value and the sound yield value of the preceding channel of described switching.
Wherein step c specifically comprises:
C1, described current audio plays frame is decoded, obtain the volume loudness value of described current audio plays frame;
The difference of the volume loudness value of c2, the volume loudness value of calculating described current audio plays frame and a last audio frame, described absolute difference and preset threshold value are compared, if described absolute difference is greater than described threshold value, then the sound yield value of a described last audio frame is deducted value after the described difference as adjusted sound yield value.
Wherein also comprise before the step c after the step a:
A described last audio frame is decoded, obtain the volume loudness value and the sound yield value of a described last audio frame.
The present invention also provides a kind of digital TV integrated machine, and described digital TV integrated machine comprises audio decoder module, MCU, control signal receiver module, memory and sound gain control module, wherein:
Described control signal receiver module is used for receiving the channel switching controls instruction of user's input, and the channel switching controls instruction that is received is transferred to described MCU;
Described audio decoder module is used for audio code stream is resolved, therefrom parse the volume loudness value of channel before switching and the volume loudness value of sound yield value and current channel, and the volume loudness value of channel before the described switching and the volume loudness value of sound yield value and current channel are transferred to described MCU;
Described MCU is used for according to described channel switching instruction, calculate the volume loudness value of described current channel and the difference of the volume loudness value of switching preceding channel, calculate the sound yield value of determining described current channel according to the sound yield value of channel before described difference and the described switching, the sound yield value of described current channel is transferred to described sound gain control module;
Described sound gain control module is used for controlling according to the sound yield value of the current channel of described MCU transmission the sound gain of described digital TV integrated machine;
Described memory is used for storing the volume loudness value and the sound yield value of the preceding channel of described switching, calls for described MCU.
More specifically, described MCU comprises audio parameter value receiver module, audio parameter value comparison module, sound gain calculation module and the sound gain output module that connects successively, wherein:
Described audio parameter value receiver module is used for receiving the volume loudness value and the sound yield value of the preceding channel of described switching, the volume loudness value and the sound yield value of channel before the described switching are transferred to memory stores, and be used for receiving the volume loudness value of described current channel, the volume loudness value of described current channel is transferred to described audio parameter value comparison module;
Described audio parameter value comparison module is used for calling the volume loudness value of channel before the described switching from memory, the volume loudness value of channel before the described switching and the volume loudness value of current channel are compared, calculate the volume loudness value of described current channel and the difference of the volume loudness value of switching preceding channel, described difference is transferred to described sound gain calculation module;
The sound yield value of channel before described sound gain value computation module is used for calling from memory and switches, the value that the sound yield value of channel before the described switching is deducted after the described difference is transferred to described sound gain output module as the sound yield value of described current channel;
Described sound gain output module is used for exporting to described sound gain control module the sound yield value of described current channel.
More specifically, described audio parameter value comparison module also is used for the difference and the preset threshold value of the volume loudness value of channel before the volume loudness value of described current channel and the switching are compared, if both differences are greater than preset threshold value, then the difference with both is transferred to described sound gain calculation module.
More specifically, described audio decoder module also is used for audio frame is resolved, therefrom parse the volume loudness value of an audio frame and the volume loudness value of sound yield value and current audio plays frame, and the volume loudness value of a described last audio frame and the volume loudness value of sound yield value and current audio plays frame are transferred to described MCU;
Described MCU also calculates the difference of the volume loudness value of the volume loudness value of described current audio plays frame and a last audio frame, calculate the sound yield value of determining described current audio plays frame according to the sound yield value of a described difference and a described last audio frame, the sound yield value of described current audio plays frame is transferred to described sound gain control module;
Described sound gain control module is used for controlling according to the sound yield value of the current audio plays frame of described MCU transmission the sound gain of described digital TV integrated machine;
Described memory is used for storing the volume loudness value and the sound yield value of a described last audio frame, calls for described MCU.
More specifically, described MCU comprises audio parameter value receiver module, audio parameter value comparison module, sound gain calculation module and the sound gain output module that connects successively, wherein:
Described audio parameter value receiver module is used for receiving the volume loudness value and the sound yield value of a described last audio frame, the volume loudness value and the sound yield value of a described last audio frame are transferred to memory stores, and be used for receiving the volume loudness value of described current audio plays frame, the volume loudness value of described current audio plays frame is transferred to described audio parameter value comparison module;
Described audio parameter value comparison module is used for calling the volume loudness value of a described last audio frame from memory, the volume loudness value of a described last audio frame and the volume loudness value of current audio plays frame are compared, calculate the difference of the volume loudness value of the volume loudness value of described current audio plays frame and a last audio frame, described difference is transferred to described sound gain calculation module;
Described sound gain value computation module is used for calling the sound yield value of a last audio frame from memory, the value that the sound yield value of a described last audio frame is deducted after the described difference is transferred to described sound gain output module as the sound yield value of described current audio plays frame;
Described sound gain output module is used for exporting to described sound gain control module the sound yield value of described current audio plays frame.
The present invention overcomes the deficiencies in the prior art, when the user changes the platform operation, the volume loudness value and the sound yield value of channel before system log (SYSLOG) switches, and obtain the volume loudness value of switching back channel (current channel), the sound intensity value of channel being switched front and back compares, determine whether that according to comparative result needs adjust the sound yield value that switches the back channel, to realize changing the volume equilibrium before and after the platform; Watch in the process of program the user, system obtains the volume loudness value of current audio plays frame (next audio frame), the volume loudness value of the last audio frame of the volume loudness value of current audio plays frame and record is compared, determine whether that according to comparative result needs adjust the yield value of current audio plays frame, to realize the equilibrium of same channel voice output.Technical scheme provided by the invention makes digital TV integrated machine when channel switching or program interruption, can adjust automatically for the volume loudness differences, can prevent the obvious loudness differences switching and disturb the people during program interruption at channel, thereby make digital TV integrated machine voice output when channel switching and program interruption be consistent, improve the availability of product, made the user have better experience.
Description of drawings
Fig. 1 is the digital TV integrated machine theory diagram of the embodiment of the invention;
Fig. 2 is the schematic diagram of the digital TV integrated machine MCU of the embodiment of the invention;
Fig. 3 is the flow chart of the embodiment of the invention.
Embodiment
Technical scheme provided by the invention is: when the user changes the platform operation, the volume loudness value and the sound yield value of channel before system log (SYSLOG) switches, and obtain the volume loudness value of switching back channel (current channel), the sound intensity value of channel being switched front and back compares, determine whether that according to comparative result needs adjust the sound yield value that switches the back channel, to realize changing the volume equilibrium before and after the platform; Watch in the process of program the user, system obtains the volume loudness value of current audio plays frame (next audio frame), the volume loudness value of the last audio frame of the volume loudness value of current audio plays frame and record is compared, determine whether that according to comparative result needs adjust the yield value of current audio plays frame, to realize the equilibrium of same channel voice output.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The schematic diagram of the digital TV integrated machine that the embodiment of the invention provides comprises audio decoder module, MCU (microprocessor), remote control receiver module, memory and sound gain control module as shown in Figure 1.
Wherein: the remote control receiver module is connected with MCU, is used for receiving the remote signal that the user sends by remote controller, demodulates remote control coding from the remote signal that receives, and the remote control coding that demodulates is transferred to MCU; In the embodiment of the invention, the user can change the platform operation by remote controller; During specific implementation, the user can also realize changing the platform operation by the button on the television set control panel except realizing changing the platform operation by remote controller;
The audio decoder module links to each other with MCU, be used for audio code stream is resolved, therefrom parse the audio parameter value, as the volume loudness value and the sound yield value of channel before switching, switch the volume loudness value of back channel, the volume loudness value of the volume loudness value of a last audio frame and sound yield value and current audio plays frame, and the audio parameter value that parses is transferred to MCU;
MCU links to each other with memory, is used for the remote control coding of remote control receiver module transmission is resolved, and controls the operation of each correlation function module according to analysis result; Volume loudness value and sound yield value as channel before will switching store memory into, the volume loudness value of channel before switching and the volume loudness value of switching back channel are compared, if both differences exceed preset threshold value, then the sound yield value is adjusted, adjusted sound yield value is transferred to the sound gain control module according to both differences; Store the volume loudness value of the last audio frame of audio frequency parsing module transmission and the volume loudness value of sound yield value into memory, the volume loudness value of current audio plays frame and the volume loudness value of a last audio frame are compared, if both differences exceed preset threshold value, then the sound yield value is adjusted, adjusted sound yield value is transferred to the sound gain control module according to both differences;
Memory links to each other with MCU, is used for the volume loudness value and the sound yield value of channel before the bank switching, the volume loudness value of previous frame audio frequency and sound yield value;
The sound gain control module links to each other with MCU, is used for gain according to the adjusted sound yield value control figure TV all-in-one power amplifier chip of MCU transmission.
Specifically, the theory diagram of MCU comprises the audio parameter value receiver module, audio parameter value comparison module, sound gain calculation module and the sound gain output module that connect successively as shown in Figure 2.Wherein: audio parameter value receiver module links to each other with memory, be used for receiving the volume loudness value and the sound yield value of channel before switching, the volume loudness value and the sound yield value of channel before switching are transferred to memory stores, and be used for receiving the volume loudness value of switching the back channel, will switch the volume loudness value transmission audio parameter value comparison module of back channel; Audio parameter value comparison module links to each other with memory, be used for from memory, calling the volume loudness value of channel before switching, the volume loudness value of channel before switching is compared with the volume loudness value of switching the back channel, and be used for both difference and preset threshold value are compared, if both differences are greater than preset threshold value, then the difference with both is transferred to the sound gain calculation module; The sound gain value computation module links to each other with memory, be used for from memory, calling the sound yield value of channel before switching, volume loudness value according to channel before switching is adjusted the sound yield value of channel before switching with the difference of the volume loudness value of switching the back channel, and adjusted sound yield value is transferred to sound gain output module as the sound yield value of current channel; Sound gain output module is used for to power amplifier chip output sound yield value.The volume loudness value of channel is Lo1 before supposing to switch, the sound yield value of channel is Go1 before switching, the volume loudness value of switching the back channel is Ln1, if the absolute difference of Ln1-Lo1 greater than preset threshold value, adjusted sound yield value Gn1=Go1+ (Lo1-Ln1).
In addition, do not carry out the channel handover operation the user, during the program of the some channels of television set normal play, audio parameter value receiver module also is used for receiving the volume loudness value and the sound yield value of an audio frame, the volume loudness value and the sound yield value of previous frame audio frequency are transferred to memory stores, and be used for receiving the volume loudness value of current audio plays frame, the volume loudness value of current audio frame is transferred to audio parameter value comparison module; Audio parameter value comparison module links to each other with memory, be used for from memory, calling the volume loudness value of a last audio frame, the volume loudness value of a last audio frame and the volume loudness value of current audio plays frame are compared, and be used for both difference and preset threshold value are compared, if both differences are greater than preset threshold value, then the difference with both is transferred to the sound gain calculation module; The sound gain value computation module links to each other with memory, be used for from memory, calling the sound yield value of previous frame audio frequency, difference according to the volume loudness value of the volume loudness value of previous frame audio frequency and current audio plays frame is adjusted the sound yield value of a last audio frame, and adjusted sound yield value is transferred to sound gain output module as the sound yield value of current audio plays frame; Sound gain output module is used for to power amplifier chip output sound yield value.If the volume loudness value of a last audio frame is Lo2, the sound yield value of a last audio frame is Go2, the volume loudness value of current audio plays frame is Ln2, if the absolute difference of Ln2-Lo2 greater than preset threshold value, adjusted sound yield value Gn2=Go2+ (Lo2-Ln2).
Embodiment of the invention flow chart specifically comprises following step as shown in Figure 3:
1, beginning flow process;
2, receive channel switching instruction? if change step 3, otherwise change step 9;
3, the volume loudness value Lo1 and the sound yield value Go1 that will switch preceding channel stores memory into;
4, obtain the volume loudness value Ln1 that switches the back channel;
5, calculate the absolute difference of Ln1-Lo1, and and the threshold ratio of systemic presupposition;
6, is the absolute difference of Ln1-Lo1 greater than threshold value? if change step 7, otherwise change step 8;
7, calculate an adjusted sound yield value Gn1=Go1+ (Lo1-Ln1), and adjusted sound yield value Gn1 is set in the power amplifier chip;
8, it is constant to keep sound yield value Go1.
9, volume loudness value Lo2 and the sound yield value Go2 with a last audio frame stores memory into;
10, next audio frame is decoded, obtain the volume loudness value Ln2 of current audio plays frame;
11, calculate the absolute difference of Ln2-Lo2, and and the threshold ratio of systemic presupposition;
12, is the absolute difference of Ln2-Lo2 greater than threshold value? if change step 13, otherwise change step 14;
13, calculate an adjusted sound yield value Gn2=Go2+ (Lo2-Ln2), and adjusted sound yield value Gn2 is set in the power amplifier chip;
14, it is constant to keep sound yield value Go2.
During specific implementation technical scheme provided by the invention, can be by being provided with of predetermined threshold value being realized the self-adjusting sensitivity of technical solution of the present invention volume, when the predetermined threshold value setting is big, when the volume loudness value before and after then switching differs greatly, system just can adjust the sound yield value, if predetermined threshold value is provided with less even when being zero, as long as volume loudness value difference is less even when some difference is arranged before and after then switching, system all can adjust the sound yield value.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. method for controlling volume, described method comprises:
A, receive channel switching instruction? if change step b, otherwise change step c;
The difference of the volume loudness value of channel is adjusted the sound yield value of current channel according to described difference before b, the volume loudness value of calculating current channel and the switching;
The difference of the volume loudness value of c, the volume loudness value of calculating current audio plays frame and a last audio frame is adjusted the sound yield value of described current audio plays frame according to described difference.
2. method according to claim 1 is characterized in that, wherein step b specifically comprises:
B1, the voice data of described current channel is decoded, obtain the volume loudness value of described current channel;
The difference of the volume loudness value of channel before b2, the volume loudness value of calculating described current channel and the switching, described absolute difference and preset threshold value are compared, if described absolute difference is greater than described threshold value, then the sound yield value of channel before the described switching is deducted value after the described difference as adjusted sound yield value.
3. method according to claim 1 is characterized in that, wherein also comprises before the step b after the step a:
Voice data to channel before the described switching is decoded, and obtains the volume loudness value and the sound yield value of the preceding channel of described switching.
4. method according to claim 1 is characterized in that, wherein step c specifically comprises:
C1, described current audio plays frame is decoded, obtain the volume loudness value of described current audio plays frame;
The difference of the volume loudness value of c2, the volume loudness value of calculating described current audio plays frame and a last audio frame, described absolute difference and preset threshold value are compared, if described absolute difference is greater than described threshold value, then the sound yield value of a described last audio frame is deducted value after the described difference as adjusted sound yield value.
5. method according to claim 1 is characterized in that, wherein also comprises before the step c after the step a:
A described last audio frame is decoded, obtain the volume loudness value and the sound yield value of a described last audio frame.
6. a digital TV integrated machine is characterized in that, described digital TV integrated machine comprises audio decoder module, MCU, control signal receiver module, memory and sound gain control module, wherein:
Described control signal receiver module is used for receiving the channel switching controls instruction of user's input, and the channel switching controls instruction that is received is transferred to described MCU;
Described audio decoder module is used for audio code stream is resolved, therefrom parse the volume loudness value of channel before switching and the volume loudness value of sound yield value and current channel, and the volume loudness value of channel before the described switching and the volume loudness value of sound yield value and current channel are transferred to described MCU;
Described MCU is used for according to described channel switching instruction, calculate the volume loudness value of described current channel and the difference of the volume loudness value of switching preceding channel, calculate the sound yield value of determining described current channel according to the sound yield value of channel before described difference and the described switching, the sound yield value of described current channel is transferred to described sound gain control module;
Described sound gain control module is used for controlling according to the sound yield value of the current channel of described MCU transmission the sound gain of described digital TV integrated machine;
Described memory is used for storing the volume loudness value and the sound yield value of the preceding channel of described switching, calls for described MCU.
7. digital TV integrated machine according to claim 6 is characterized in that, described MCU comprises audio parameter value receiver module, audio parameter value comparison module, sound gain calculation module and the sound gain output module that connects successively, wherein:
Described audio parameter value receiver module is used for receiving the volume loudness value and the sound yield value of the preceding channel of described switching, the volume loudness value and the sound yield value of channel before the described switching are transferred to memory stores, and be used for receiving the volume loudness value of described current channel, the volume loudness value of described current channel is transferred to described audio parameter value comparison module;
Described audio parameter value comparison module is used for calling the volume loudness value of channel before the described switching from memory, the volume loudness value of channel before the described switching and the volume loudness value of current channel are compared, calculate the volume loudness value of described current channel and the difference of the volume loudness value of switching preceding channel, described difference is transferred to described sound gain calculation module;
The sound yield value of channel before described sound gain value computation module is used for calling from memory and switches, the value that the sound yield value of channel before the described switching is deducted after the described difference is transferred to described sound gain output module as the sound yield value of described current channel;
Described sound gain output module is used for exporting to described sound gain control module the sound yield value of described current channel.
8. digital TV integrated machine according to claim 7, it is characterized in that, described audio parameter value comparison module also is used for the difference and the preset threshold value of the volume loudness value of channel before the volume loudness value of described current channel and the switching are compared, if both differences are greater than preset threshold value, then the difference with both is transferred to described sound gain calculation module.
9. digital TV integrated machine according to claim 6, it is characterized in that, described audio decoder module also is used for audio frame is resolved, therefrom parse the volume loudness value of an audio frame and the volume loudness value of sound yield value and current audio plays frame, and the volume loudness value of a described last audio frame and the volume loudness value of sound yield value and current audio plays frame are transferred to described MCU;
Described MCU also calculates the difference of the volume loudness value of the volume loudness value of described current audio plays frame and a last audio frame, calculate the sound yield value of determining described current audio plays frame according to the sound yield value of a described difference and a described last audio frame, the sound yield value of described current audio plays frame is transferred to described sound gain control module;
Described sound gain control module is used for controlling according to the sound yield value of the current audio plays frame of described MCU transmission the sound gain of described digital TV integrated machine;
Described memory is used for storing the volume loudness value and the sound yield value of a described last audio frame, calls for described MCU.
10. digital TV integrated machine according to claim 9 is characterized in that, described MCU comprises audio parameter value receiver module, audio parameter value comparison module, sound gain calculation module and the sound gain output module that connects successively, wherein:
Described audio parameter value receiver module is used for receiving the volume loudness value and the sound yield value of a described last audio frame, the volume loudness value and the sound yield value of a described last audio frame are transferred to memory stores, and be used for receiving the volume loudness value of described current audio plays frame, the volume loudness value of described current audio plays frame is transferred to described audio parameter value comparison module;
Described audio parameter value comparison module is used for calling the volume loudness value of a described last audio frame from memory, the volume loudness value of a described last audio frame and the volume loudness value of current audio plays frame are compared, calculate the difference of the volume loudness value of the volume loudness value of described current audio plays frame and a last audio frame, described difference is transferred to described sound gain calculation module;
Described sound gain value computation module is used for calling the sound yield value of a last audio frame from memory, the value that the sound yield value of a described last audio frame is deducted after the described difference is transferred to described sound gain output module as the sound yield value of described current audio plays frame;
Described sound gain output module is used for exporting to described sound gain control module the sound yield value of described current audio plays frame.
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| US6552753B1 (en) * | 2000-10-19 | 2003-04-22 | Ilya Zhurbinskiy | Method and apparatus for maintaining uniform sound volume for televisions and other systems |
| US20020173864A1 (en) * | 2001-05-17 | 2002-11-21 | Crystal Voice Communications, Inc | Automatic volume control for voice over internet |
| KR20080082173A (en) * | 2007-03-07 | 2008-09-11 | 삼성에스디아이 주식회사 | Volume control device and the driving method thereof |
| US20080253587A1 (en) * | 2007-04-11 | 2008-10-16 | Kabushiki Kaisha Toshiba | Method for automatically adjusting audio volume and audio player |
| CN101277413A (en) * | 2008-04-22 | 2008-10-01 | 北京海尔集成电路设计有限公司 | Method and apparatus for self-adaption regulating volume when switching frequency channel |
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| CN103152629A (en) * | 2013-03-28 | 2013-06-12 | 河南有线电视网络集团有限公司 | Volume regulating method and device |
| CN103152629B (en) * | 2013-03-28 | 2016-08-17 | 河南有线电视网络集团有限公司 | A kind of volume adjusting method and device |
| CN104767652A (en) * | 2014-01-08 | 2015-07-08 | 杜比实验室特许公司 | Method for monitoring performance of digit transmission environment and system for determining potential service quality |
| CN104735528A (en) * | 2015-03-02 | 2015-06-24 | 青岛海信电器股份有限公司 | Sound effect matching method and device |
| CN105187906A (en) * | 2015-07-28 | 2015-12-23 | 成都亿邻通科技有限公司 | Method for automatically adjusting volume of intelligent television |
| WO2017032120A1 (en) * | 2015-08-27 | 2017-03-02 | 深圳Tcl数字技术有限公司 | Playing processing method and apparatus for audio switching |
| CN106231410A (en) * | 2016-08-29 | 2016-12-14 | 北海爱飞数码科技有限公司 | It is applied to the volume adjustment device of television set |
| CN107277268A (en) * | 2017-07-17 | 2017-10-20 | 维沃移动通信有限公司 | A kind of audio frequency playing method and mobile terminal |
| CN107566652A (en) * | 2017-09-20 | 2018-01-09 | 惠州Tcl移动通信有限公司 | A kind of method, mobile terminal and the storage medium of automatic regulating volume size |
| CN108769798A (en) * | 2018-06-01 | 2018-11-06 | 深圳市茁壮网络股份有限公司 | A kind of method of adjustment and system of volume |
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