WO2020042407A1 - Sound control method, device, television, and storage medium - Google Patents
Sound control method, device, television, and storage medium Download PDFInfo
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- WO2020042407A1 WO2020042407A1 PCT/CN2018/118562 CN2018118562W WO2020042407A1 WO 2020042407 A1 WO2020042407 A1 WO 2020042407A1 CN 2018118562 W CN2018118562 W CN 2018118562W WO 2020042407 A1 WO2020042407 A1 WO 2020042407A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- the present disclosure relates to the technical field of television development and application, for example, to a sound effect control method, device, television, and storage medium.
- the low-frequency and high-frequency are improved more, and the intermediate frequency is improved less.
- the sound power test is based on the power of 1KHz. If a rated power output of 10W is to be seen from Figure 1, when the power of 1KHz is 10W, 150Hz, 2KHz, 4KHz-10KHz frequency band power is far greater than 10W; due to the limitation of power amplifier power rails, the above frequency bands will inevitably be seriously distorted.
- DRC Dynamic Range Compression
- the above measures have obvious shortcomings: increasing system cost. Because DRC processing has a start-up time and release time, users can easily hear big and small changes when playing fast-paced music. This sound experience is often more than audio distortion. Difficult to accept.
- the present disclosure provides a sound effect control method, device, television, and storage medium, which aims to modify the gain of each frequency band according to the real-time volume value of the user menu to make the volume Even when turned on to the maximum, the full-band audio waveform is not distorted or distorted, so that when the user's volume is turned on, the gain of each band of the EQ curve is appropriately changed to reduce distortion, which can effectively reduce audio distortion when watching TV. To improve user viewing satisfaction.
- a sound effect control method wherein the sound effect control method includes:
- the gain of each band is corrected by the gain correction factor and the adjustment coefficient according to the real-time volume value of the user menu.
- the method further includes:
- the maximum output is limited by dynamic range compression to protect the speaker.
- the sound effect control method wherein the real-time volume value according to the user menu, when the input source volume exceeds a predetermined value, limiting the maximum output through dynamic range compression, after protecting the speaker, further includes:
- the speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine.
- the gain of each frequency band is corrected according to the real-time volume value of the user menu, so that even when the volume is turned on to the maximum, the full-band audio waveform is not distorted or has little distortion.
- the sound effect control method wherein after the sub-band processing is completed, correcting the gain of each frequency band through a gain correction factor and an adjustment coefficient according to the real-time volume value of the user menu includes:
- G1 ’ G1 * f * k
- G2 ’ G2 * f * k
- G3 ’ G3 * f * k
- G4 ’ G4 * f * k, ...
- Gn ’ Gn * f * k
- f is the gain correction factor and k is the adjustment coefficient; all gains are in units of 0dB, 0dB means change, greater than 0 means increase, and less than 0 means attenuation.
- the gain correction factor f is specifically determined in the following manner:
- the adjustment coefficient k is determined according to actual test conditions and acceptable distortion.
- the adjustment coefficient k is specifically determined in the following manner:
- the same k value is determined for each frequency band, as follows:
- the sound effect control method wherein when the n-band is modified, the gain is:
- the final gain Gm is:
- Ga is the back-end gain of the power amplifier.
- the audio EQ is adjusted, and 100 Hz-20 KHz is divided into frequency bands in a standard test state, and is divided into five frequency bands.
- each frequency band uses a same k value or different k values.
- the gains of the corresponding frequency bands G1, G2, G3, G4, G5, and the audio signal enter the automatic gain adjustment module to perform the gain correction of each frequency band after the signal processing module and the audio adjustment module.
- a sound effect control device wherein the sound effect control device includes:
- the signal processing module is used for receiving signals of different channels, and normalizing preprocessing of the signal inputs of different channels, which is convenient for unified processing after unifying the signal standards;
- An audio adjustment module which is used to divide the frequency response within a preset range into multiple frequency bands under standard test conditions, and perform sub-band processing to adjust the audio size;
- An automatic gain adjustment module is used to modify the gain of each frequency band by using a gain correction factor and an adjustment coefficient according to the real-time volume value of the user menu after the sub-band processing is completed;
- Dynamic range compression module used to limit the maximum output through dynamic range compression when the input source volume exceeds a predetermined value, and is used to protect the speaker;
- the power amplifier circuit driving module is used to drive the speaker through the power amplifier circuit to achieve the rated power required by the whole machine.
- a television wherein the television includes a memory, a processor, and a sound effect control program stored in the memory and executable on the processor.
- the sound effect control program is executed by the processor, Implement the steps of the sound control method as described above.
- a storage medium wherein the storage medium stores a sound effect control program, and when the sound effect control program is executed by a processor, implements the steps of the sound effect control method as described above.
- the disclosure provides a sound effect control method, a device, a television and a storage medium.
- the method includes: receiving signals of different channels, and performing normalized preprocessing on the signal inputs of the different channels, and unifying the standards of the signals to facilitate unification. Processing; divide the frequency response within the preset range into multiple frequency bands under standard test conditions, and perform sub-band processing to adjust the audio size; after the sub-band processing is completed, according to the real-time volume value of the user menu, the gain correction factor and Adjust the coefficient to modify the gain of each band; when the input source volume exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker; the speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine.
- the gain of each frequency band is modified according to the real-time volume value of the user menu, so that even when the volume is turned on to the maximum, the full-band audio waveform is not distorted or the distortion is small.
- Gain in the frequency band to reduce distortion can effectively reduce audio distortion when watching TV and improve user viewing satisfaction.
- FIG. 1 is a schematic diagram of effects of separately adjusting multiple frequency bands in the prior art
- FIG. 2 is a flowchart of a preferred embodiment of a sound effect control method according to the present disclosure
- FIG. 3 is a schematic diagram of effects of separately adjusting multiple frequency bands in a preferred embodiment of a sound effect control method of the present disclosure
- FIG. 4 is a principle block diagram of a preferred embodiment of a sound effect control device of the present disclosure
- FIG. 5 is a schematic diagram of an operating environment of a preferred embodiment of the television of the present disclosure.
- the sound effect control method includes the following steps:
- step S10 the signals of different channels are received, and the signal inputs of the different channels are normalized and pre-processed. After the standards of the signals are unified, the unified processing is facilitated.
- the signal input of different channels is normalized and pre-processed, and the standard is unified so that the subsequent modules are processed uniformly.
- normalization means that the TV has different sources, ATV / DTV / AV / HMDI / USB, etc., each The circuit of source input from the terminal to the signal processing module is different.
- the standard input signal enters the terminals and reaches the signal processing module, the amplitude is different.
- the signal processing module compensates for these differences and makes the standard of the same amplitude.
- the signal input, after the signal processing module, the output amplitude is the same.
- step S20 the frequency response within a preset range is divided into a plurality of frequency bands in a standard test state, and frequency band processing is performed to adjust the audio size.
- adjusting the audio EQ is to divide the frequency band from 100Hz to 20KHz under the standard test state. As shown in FIG. 3, it is divided into five frequency bands. Among them, the low frequency and high frequency are improved more, and the intermediate frequency is improved less.
- Step S30 After the sub-band processing is completed, according to the real-time volume value of the user menu, the gain of each frequency band is corrected through a gain correction factor and an adjustment coefficient.
- the gain of each frequency band is modified so that even when the volume is turned on to the maximum (1KHz power reaches the nominal rated power), the full-band audio waveform is not distorted or has little distortion.
- the gain of each frequency band is corrected through the gain correction factor and adjustment coefficient.
- the details include:
- G1 ’ G1 * f * k
- G2 ’ G2 * f * k
- G3 ’ G3 * f * k
- G4 ’ G4 * f * k, ...
- Gn ’ Gn * f * k
- f is the gain correction factor and k is the adjustment coefficient; all gains are in units of 0dB, 0dB means change, greater than 0 means increase, and less than 0 means attenuation.
- the gain correction factor f is specifically determined in the following manner:
- the same k value is determined for each frequency band, as follows:
- the final gain Gm is:
- Ga is the back-end gain of the power amplifier.
- the frequency response curve can be divided into 5 sections for explanation.
- EQ the gains of the corresponding frequency bands G1, G2, G3, G4, and G5 are shown in FIG.
- the audio adjustment module module 2
- the automatic gain adjustment module module 3
- the gain of each frequency band is modified to G1 ', G2', G3 ', G4', G5 ', its value
- the calculation formula is:
- G1 ’ G1 * f * k
- G2 ’ G2 * f * k
- G3 ’ G3 * f * k
- G4 ’ G4 * f * k
- G5 ’ G5 * f * k
- the gain correction factor f is determined by the following methods:
- the adjustment coefficient k is determined according to the actual test conditions and acceptable distortion.
- Each frequency band can use the same k value, or different k values.
- the following description uses the same k value for the convenience of description.
- the final corrected gain of the n-band is:
- Ga is the back-end gain of the power amplifier.
- the determination method of the core parameter f in the present disclosure is not limited to the EQ curve with only five segments of audio division, and can be extended to any number of segments, and the setting method is the same.
- the maximum output is limited by dynamic range compression to protect the speaker; the speaker is driven by a power amplifier circuit to achieve the rated power required by the entire machine.
- the present disclosure also provides a sound effect control device, wherein the sound effect control device includes: a signal processing module (module 1) 101 for receiving signals of different channels and inputting signals of different channels Normalized preprocessing to facilitate unified processing after unifying the signal standard; audio adjustment module (module 2) 102 is used to divide the frequency response within a preset range into multiple frequency bands and perform sub-banding in the standard test state Processing to adjust the audio size; automatic gain adjustment module (module 3) 103 is used to modify the gain of each frequency band through the gain correction factor and adjustment coefficient according to the real-time volume value of the user menu after the sub-band processing is completed; the dynamic range compression module ( Module 4) 104 is used to limit the maximum output through dynamic range compression when the input source volume exceeds a predetermined value, and is used to protect the speaker; the amplifier circuit drive module (module 5) 105 is used to drive the speaker through the amplifier circuit to achieve The rated power required by the whole machine.
- a signal processing module module 101 for receiving signals of different channels and inputting signals of different channels
- the present disclosure also provides a television correspondingly.
- the television includes a processor 10, a memory 20, and a display 30.
- FIG. 5 shows only some of the components of the television, but it should be understood that it is not required to implement all the illustrated components, and more or fewer components may be implemented instead.
- the memory 20 may be an internal storage unit of the television, such as a hard disk or a memory of the television. In other embodiments, the memory 20 may also be an external storage device of the TV, such as a plug-in hard disk, a Smart Media Card (SMC), and a Secure Digital , SD) card, flash memory card (Flash card), etc. Further, the memory 20 may include both an internal storage unit of the television and an external storage device.
- the memory 20 is configured to store application software installed on the television and various types of data, such as program codes of the television installed.
- the memory 20 may also be used to temporarily store data that has been or will be output.
- a sound effect control program 40 is stored in the memory 20, and the sound effect control program 40 can be executed by the processor 10 to implement the sound effect control method in the present application.
- the processor 10 may be a central processing unit (CPU), a microprocessor, or other data processing chip, configured to run program codes or process data stored in the memory 20, such as The sound effect control method and the like are executed.
- CPU central processing unit
- microprocessor or other data processing chip, configured to run program codes or process data stored in the memory 20, such as The sound effect control method and the like are executed.
- the display 30 may be an LED display, a liquid crystal display, a touch-type liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, or the like.
- the display 30 is used to display information on the television and a visual user interface.
- the components 10-30 of the television set communicate with each other through a system bus.
- the gain of each band is corrected by the gain correction factor and the adjustment coefficient according to the real-time volume value of the user menu.
- the present disclosure also provides a storage medium, wherein the storage medium stores a sound effect control program, and when the sound effect control program is executed by a processor, implements the steps of the sound effect control method as described above; specifically as described above.
- the present disclosure provides a sound effect control method, device, television, and storage medium.
- the method includes: receiving signals of different channels, and normalizing pre-processing of signal inputs of different channels to unify the signal After the standard, it is convenient for unified processing.
- the frequency response in the preset range is divided into multiple frequency bands, and sub-band processing is performed to adjust the audio size.
- Gain correction factors and adjustment coefficients are used to modify the gain of each band; when the input source volume exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker; the speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine.
- the gain of each frequency band is modified according to the real-time volume value of the user menu, so that even when the volume is turned on to the maximum, the full-band audio waveform is not distorted or the distortion is small.
- Gain in the frequency band to reduce distortion can effectively reduce audio distortion when watching TV and improve user viewing satisfaction.
- the implementation of all or part of the processes in the methods of the foregoing embodiments can be accomplished by using a computer program to instruct related hardware (such as a processor, a controller, etc.), and the program can be stored in a In a computer-readable storage medium, when the program is executed, the program may include processes according to the foregoing method embodiments.
- the storage medium may be a memory, a magnetic disk, an optical disk, or the like.
- the sound effect control method, device, television and storage medium provided by the present disclosure correct the gain of each frequency band according to the real-time volume value of the user menu, so that even when the volume is turned on at maximum, the full-band audio waveform is not distorted or has very little distortion.
- appropriately changing the gain of each frequency band of the EQ curve to reduce distortion can effectively reduce audio distortion when watching TV and improve user viewing satisfaction.
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Abstract
The present disclosure relates to a sound control method, a device, a television, and a storage medium. The method comprises: receiving signals of different channels, and performing normalization pre-processing by using the signals of the different channels as inputs, such that the signals have a uniform reference to facilitate uniform processing; dividing, under standard testing conditions, a frequency response within a pre-determined range into multiple frequency bands, and performing separate processing in the frequency bands to adjust an audio magnitude; after the separate processing in the frequency bands is completed, correcting, by means of a gain correction factor and an adjustment coefficient, respective gains of the frequency bands according to a real-time volume setting of a user menu; when an input source volume exceeds a pre-determined value, limiting an output maximum by means of dynamic range compression, so as to protect a speaker; and driving the speaker via a power amplifier circuit, so as to reach a required rated power of an overall unit. The present disclosure corrects a gain of each frequency band according to a real-time volume setting of a user menu, thereby effectively reducing audio distortion when watching television, and improving viewing satisfaction of users.
Description
本公开涉及电视机开发和应用技术领域,例如涉及一种音效控制方法、装置、电视机及存储介质。The present disclosure relates to the technical field of television development and application, for example, to a sound effect control method, device, television, and storage medium.
在电视机开发设计中,根据AQ(Audio Quality,音质)的需要,功放输出的电频响都不是一条平坦的直线,往往会根据喇叭、机壳以及特殊的渲染要求,会对电频响曲线做修正,如图1所示,其大致通用做法是根据实际情况,以1KHz的频响为基础,把大约100Hz-20KHz范围划分为多个频段进行分别调整,以到达需要的效果。In the development and design of TV sets, according to the requirements of AQ (Audio Quality), the electric frequency response of the power amplifier output is not a flat straight line, and it will often respond to the electric frequency response curve according to the speaker, casing and special rendering requirements. As shown in Figure 1, its general practice is to divide the approximately 100Hz-20KHz range into multiple frequency bands based on the actual situation and adjust them separately to achieve the desired effect.
一般是对低频和高频提升较多,中频提升较少;伴音功率测试是以1KHz的功率准,假如要做10W的额定功率输出,从图1可以看出,当1KHz功率为10W时,其150Hz、2KHz,4KHz-10KHz频段功率远远大于10W的;由于功放电源轨的限制,以上频段必将出现严重失真。目前针对以上情况现有技术有两种对策:1.增大功放电源轨,即提高功放输入电压;2.通过DRC(Dynamic Range Compression,动态范围压缩)限制最大输出。但是以上措施都有明显的缺点:增加***成本,由于DRC处理有一个起控时间和释放时间,用户播放快节奏音乐时很容易听到忽大忽小变化,这种音效体验往往比音频失真更难以接受。Generally, the low-frequency and high-frequency are improved more, and the intermediate frequency is improved less. The sound power test is based on the power of 1KHz. If a rated power output of 10W is to be seen from Figure 1, when the power of 1KHz is 10W, 150Hz, 2KHz, 4KHz-10KHz frequency band power is far greater than 10W; due to the limitation of power amplifier power rails, the above frequency bands will inevitably be seriously distorted. At present, there are two countermeasures in the prior art for the above situation: 1. Increase the power amplifier power rail, that is, increase the power amplifier input voltage; 2. Limit the maximum output by DRC (Dynamic Range Compression). However, the above measures have obvious shortcomings: increasing system cost. Because DRC processing has a start-up time and release time, users can easily hear big and small changes when playing fast-paced music. This sound experience is often more than audio distortion. Difficult to accept.
因此,现有技术还有待于改进和发展。Therefore, the existing technology needs to be improved and developed.
发明内容Summary of the Invention
本公开要解决的技术问题在于,针对现有技术缺陷,本公开提供一种音效控制方法、装置、电视机及存储介质,旨在根据用户菜单实时的音量值,来修正各频段增益,使音量即使开到最大时,全频段音频波形不失真或失真很小,实现在用户音量开得很大时,适当改变EQ曲线各频段的增益,以减小失真,可以有效降低收看电视时的音频失真,提升用户观看的满意度。The technical problem to be solved by the present disclosure is that, in view of the shortcomings of the prior art, the present disclosure provides a sound effect control method, device, television, and storage medium, which aims to modify the gain of each frequency band according to the real-time volume value of the user menu to make the volume Even when turned on to the maximum, the full-band audio waveform is not distorted or distorted, so that when the user's volume is turned on, the gain of each band of the EQ curve is appropriately changed to reduce distortion, which can effectively reduce audio distortion when watching TV. To improve user viewing satisfaction.
本公开解决技术问题所采用的技术方案如下:The technical solutions adopted by the present disclosure to solve technical problems are as follows:
一种音效控制方法,其中,所述音效控制方法包括:A sound effect control method, wherein the sound effect control method includes:
接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理;Receive the signals of different channels and normalize the pre-processing of the signal inputs of different channels, which is convenient for unified processing after unifying the signal standards;
在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;Divides the frequency response within the preset range into multiple frequency bands under standard test conditions, and performs sub-band processing to adjust the audio size;
当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益。After the sub-band processing is completed, the gain of each band is corrected by the gain correction factor and the adjustment coefficient according to the real-time volume value of the user menu.
所述的音效控制方法,其中,所述当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益之后还包括:According to the sound effect control method, after the sub-band processing is completed, after the gain of each frequency band is corrected by the gain correction factor and the adjustment coefficient according to the real-time volume value of the user menu, the method further includes:
当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭。When the input source volume exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker.
所述的音效控制方法,其中,所述根据用户菜单实时的音量值,所述当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭之后还包括:The sound effect control method, wherein the real-time volume value according to the user menu, when the input source volume exceeds a predetermined value, limiting the maximum output through dynamic range compression, after protecting the speaker, further includes:
通过功放电路来驱动喇叭,以达到整机需要的额定功率。The speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine.
所述的音效控制方法,其中,根据用户菜单实时的音量值,来修正各频段增益,使音量即使开到最大时,全频段音频波形不失真或失真很小。In the sound effect control method, the gain of each frequency band is corrected according to the real-time volume value of the user menu, so that even when the volume is turned on to the maximum, the full-band audio waveform is not distorted or has little distortion.
所述的音效控制方法,其中,所述当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益具体包括:The sound effect control method, wherein after the sub-band processing is completed, correcting the gain of each frequency band through a gain correction factor and an adjustment coefficient according to the real-time volume value of the user menu includes:
将频响曲线划分为n段,当EQ调节时,将对应频段的增益G1,G2,G3,G4,……Gn修正为G1’,G2’,G3’,G4’……Gn’,其值计算公式为:Divide the frequency response curve into n segments. When EQ is adjusted, the gains of the corresponding frequency bands G1, G2, G3, G4, ... Gn are modified to G1 ', G2', G3 ', G4' ... Gn ', and their values The calculation formula is:
G1’=G1*f*k,G1 ’= G1 * f * k,
G2’=G2*f*k,G2 ’= G2 * f * k,
G3’=G3*f*k,G3 ’= G3 * f * k,
G4’=G4*f*k,……G4 ’= G4 * f * k, ...
Gn’=Gn*f*k,Gn ’= Gn * f * k,
其中,f为增益修正因子,k为调节系数;所有增益都以0dB为单位,0dB表示变化,大于0表示增加,小于0表示衰减。Among them, f is the gain correction factor and k is the adjustment coefficient; all gains are in units of 0dB, 0dB means change, greater than 0 means increase, and less than 0 means attenuation.
所述的音效控制方法,其中,增益修正因子f具体通过以下方式确定:In the sound effect control method, the gain correction factor f is specifically determined in the following manner:
当音频输入电视机,通过归一化预处理并完成EQ调试后,设置f=1,k=1, 增加TV菜单音量值,在音频测试全频段内找到第一个失真点,记录此时的菜单音量v0,用于设置f:When the audio is input to the TV, after normalization preprocessing and EQ debugging, set f = 1 and k = 1, increase the TV menu volume value, find the first distortion point in the full frequency band of the audio test, and record the Menu volume v0, used to set f:
当v≥v0;f=(100-v)/(100-v0);When v≥v0; f = (100-v) / (100-v0);
当v<v0:f=1;When v <v0: f = 1;
v为用户菜单的实时音量值,只有当v≥v0时,f=(100-v)/(100-v0),当v<v0的时候,全频段音频都不失真,各频段增益不需要修正,所以设置f=1;当v=100时,电视机音量已调到最大,f=0,修正量到最大值,即不对该频段做增益。v is the real-time volume value of the user menu. Only when v≥v0, f = (100-v) / (100-v0). When v <v0, the full-band audio is not distorted, and the gain of each band does not need to be modified Therefore, set f = 1; when v = 100, the TV volume has been adjusted to the maximum, f = 0, and the correction amount has reached the maximum, that is, no gain is made for this frequency band.
所述的音效控制方法,其中,调节系数k根据实际测试情况及可接受的失真度确定。In the sound effect control method, the adjustment coefficient k is determined according to actual test conditions and acceptable distortion.
所述的音效控制方法,其中,调节系数k具体通过以下方式确定:In the sound effect control method, the adjustment coefficient k is specifically determined in the following manner:
根据实际测试情况及可接受的失真度确定各频段用同一个k值,如下:According to the actual test conditions and acceptable distortion, the same k value is determined for each frequency band, as follows:
当v<v0时,k=1,不做修正;When v <v0, k = 1, without modification;
当v≥v0时,f*k<1;When v≥v0, f * k <1;
如果f*k>1,相当于会增加各频段增益,失真会更大;If f * k> 1, it is equivalent to increase the gain of each frequency band and the distortion will be greater;
如果f*k=1,相当于直通,对各频段增益不做修正。If f * k = 1, it is equivalent to pass-through, and the gain of each frequency band is not modified.
所述的音效控制方法,其中,当第n频段修正后的增益为:The sound effect control method, wherein when the n-band is modified, the gain is:
当v≥v0:G(n)’=G(n)*f*k=G(n)*[(100-v)/(100-v0)]*k;When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;
当v<v0:G(n)’=G(n);When v <v0: G (n) '= G (n);
最终增益Gm为:The final gain Gm is:
Gm(n)=G(n)’+Ga=G(n)*f*k+Ga=G(n)*[(100-v)/(100-v0)]*k+Ga;Gm (n) = G (n) '+ Ga = G (n) * f * k + Ga = G (n) * [(100-v) / (100-v0)] * k + Ga;
其中,Ga为功放后端增益。Among them, Ga is the back-end gain of the power amplifier.
所述的音效控制方法,其中,调整音频EQ,在标准测试状态下对100Hz-20KHz进行分频段处理,分成了五个频段。In the sound effect control method, the audio EQ is adjusted, and 100 Hz-20 KHz is divided into frequency bands in a standard test state, and is divided into five frequency bands.
所述的音效控制方法,其中,各频段为用同一个k值或者为不同的k值。In the sound effect control method, each frequency band uses a same k value or different k values.
所述的音效控制方法,其中,EQ调节时,对应频段的增益G1,G2,G3,G4,G5,音频信号经过信号处理模块和音频调整模块后,进入自动增益调节模块进行各频段的增益修正。In the sound effect control method, when EQ is adjusted, the gains of the corresponding frequency bands G1, G2, G3, G4, G5, and the audio signal enter the automatic gain adjustment module to perform the gain correction of each frequency band after the signal processing module and the audio adjustment module. .
一种音效控制装置,其中,所述音效控制装置包括:A sound effect control device, wherein the sound effect control device includes:
信号处理模块,用于接收不同通道的信号,并将不同通道的信号输入进行归 一化预处理,统一信号的标准后便于统一处理;The signal processing module is used for receiving signals of different channels, and normalizing preprocessing of the signal inputs of different channels, which is convenient for unified processing after unifying the signal standards;
音频调整模块,用于在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;An audio adjustment module, which is used to divide the frequency response within a preset range into multiple frequency bands under standard test conditions, and perform sub-band processing to adjust the audio size;
自动增益调节模块,用于当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益;An automatic gain adjustment module is used to modify the gain of each frequency band by using a gain correction factor and an adjustment coefficient according to the real-time volume value of the user menu after the sub-band processing is completed;
动态范围压缩模块,用于当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭;Dynamic range compression module, used to limit the maximum output through dynamic range compression when the input source volume exceeds a predetermined value, and is used to protect the speaker;
功放电路驱动模块,用于通过功放电路来驱动喇叭,以达到整机需要的额定功率。The power amplifier circuit driving module is used to drive the speaker through the power amplifier circuit to achieve the rated power required by the whole machine.
一种电视机,其中,所述电视机包括:存储器、处理器及存储在所述存储器上并可在所述处理器上运行的音效控制程序,所述音效控制程序被所述处理器执行时实现如上所述的音效控制方法的步骤。A television, wherein the television includes a memory, a processor, and a sound effect control program stored in the memory and executable on the processor. When the sound effect control program is executed by the processor, Implement the steps of the sound control method as described above.
一种存储介质,其中,所述存储介质存储有音效控制程序,所述音效控制程序被处理器执行时实现如上所述音效控制方法的步骤。A storage medium, wherein the storage medium stores a sound effect control program, and when the sound effect control program is executed by a processor, implements the steps of the sound effect control method as described above.
本公开提供了一种音效控制方法、装置、电视机及存储介质,所述方法包括:接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理;在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益;当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭;通过功放电路来驱动喇叭,以达到整机需要的额定功率。本公开根据用户菜单实时的音量值,来修正各频段增益,使音量即使开到最大时,全频段音频波形不失真或失真很小,实现在用户音量开得很大时,适当改变EQ曲线各频段的增益,以减小失真,可以有效降低收看电视时的音频失真,提升用户观看的满意度。The disclosure provides a sound effect control method, a device, a television and a storage medium. The method includes: receiving signals of different channels, and performing normalized preprocessing on the signal inputs of the different channels, and unifying the standards of the signals to facilitate unification. Processing; divide the frequency response within the preset range into multiple frequency bands under standard test conditions, and perform sub-band processing to adjust the audio size; after the sub-band processing is completed, according to the real-time volume value of the user menu, the gain correction factor and Adjust the coefficient to modify the gain of each band; when the input source volume exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker; the speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine. According to the present disclosure, the gain of each frequency band is modified according to the real-time volume value of the user menu, so that even when the volume is turned on to the maximum, the full-band audio waveform is not distorted or the distortion is small. Gain in the frequency band to reduce distortion can effectively reduce audio distortion when watching TV and improve user viewing satisfaction.
图1是现有技术中对多个频段进行分别调整的效果示意图;FIG. 1 is a schematic diagram of effects of separately adjusting multiple frequency bands in the prior art; FIG.
图2是本公开音效控制方法的较佳实施例的流程图;2 is a flowchart of a preferred embodiment of a sound effect control method according to the present disclosure;
图3是本公开音效控制方法的较佳实施例中对多个频段进行分别调整的效果示意图;FIG. 3 is a schematic diagram of effects of separately adjusting multiple frequency bands in a preferred embodiment of a sound effect control method of the present disclosure; FIG.
图4是本公开音效控制装置的较佳实施例的原理框图;4 is a principle block diagram of a preferred embodiment of a sound effect control device of the present disclosure;
图5为本公开电视机的较佳实施例的运行环境示意图。FIG. 5 is a schematic diagram of an operating environment of a preferred embodiment of the television of the present disclosure.
为使本公开的目的、技术方案及优点更加清楚、明确,以下参照附图并举实施例对本公开进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本公开,并不用于限定本公开。In order to make the objectives, technical solutions, and advantages of the present disclosure more clear and definite, the present disclosure will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.
实施例1Example 1
本公开较佳实施例所述的音效控制方法,如图2所示,所述音效控制方法包括以下步骤:As shown in FIG. 2, the sound effect control method according to the preferred embodiment of the present disclosure includes the following steps:
步骤S10、接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理。In step S10, the signals of different channels are received, and the signal inputs of the different channels are normalized and pre-processed. After the standards of the signals are unified, the unified processing is facilitated.
具体地,对不同通道的信号输入归一化预处理,统一标准,以便后面模块统一处理;其中,归一化是指电视机有不同的source、ATV/DTV/AV/HMDI/USB等,各个source从端子输入到信号处理模块的电路是不一样的,标准的输入信号进入个个端子后到达信号处理模块的时候幅度就不一样,信号处理模块就是补偿各这种差别,使同样幅度的标准信号输入,经过信号处理模块后,输出幅度也一样。Specifically, the signal input of different channels is normalized and pre-processed, and the standard is unified so that the subsequent modules are processed uniformly. Among them, normalization means that the TV has different sources, ATV / DTV / AV / HMDI / USB, etc., each The circuit of source input from the terminal to the signal processing module is different. When the standard input signal enters the terminals and reaches the signal processing module, the amplitude is different. The signal processing module compensates for these differences and makes the standard of the same amplitude. The signal input, after the signal processing module, the output amplitude is the same.
步骤S20、在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小。In step S20, the frequency response within a preset range is divided into a plurality of frequency bands in a standard test state, and frequency band processing is performed to adjust the audio size.
具体地,调整音频EQ,就是在标准测试状态下对100Hz--20KHz进行分频段处理,如图3中,分成了五个频段,其中,对低频和高频提升较多,中频提升较少。Specifically, adjusting the audio EQ is to divide the frequency band from 100Hz to 20KHz under the standard test state. As shown in FIG. 3, it is divided into five frequency bands. Among them, the low frequency and high frequency are improved more, and the intermediate frequency is improved less.
步骤S30、当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益。Step S30. After the sub-band processing is completed, according to the real-time volume value of the user menu, the gain of each frequency band is corrected through a gain correction factor and an adjustment coefficient.
具体地,根据用户菜单实时的音量值,来修正各频段增益,使音量即使开到最大(1KHz功率达到标称额定功率)时,全频段音频波形不失真或失真很小。Specifically, according to the real-time volume value of the user menu, the gain of each frequency band is modified so that even when the volume is turned on to the maximum (1KHz power reaches the nominal rated power), the full-band audio waveform is not distorted or has little distortion.
当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益具体包括:After the sub-band processing is completed, according to the real-time volume value of the user menu, the gain of each frequency band is corrected through the gain correction factor and adjustment coefficient. The details include:
将频响曲线划分为n段,当EQ调节时,将对应频段的增益G1,G2,G3,G4,……Gn修正为G1’,G2’,G3’,G4’……Gn’,其值计算公式为:Divide the frequency response curve into n segments. When EQ is adjusted, the gains of the corresponding frequency bands G1, G2, G3, G4, ... Gn are modified to G1 ', G2', G3 ', G4' ... Gn ', and their values The calculation formula is:
G1’=G1*f*k,G1 ’= G1 * f * k,
G2’=G2*f*k,G2 ’= G2 * f * k,
G3’=G3*f*k,G3 ’= G3 * f * k,
G4’=G4*f*k,……G4 ’= G4 * f * k, ...
Gn’=Gn*f*k,Gn ’= Gn * f * k,
其中,f为增益修正因子,k为调节系数;所有增益都以0dB为单位,0dB表示变化,大于0表示增加,小于0表示衰减。Among them, f is the gain correction factor and k is the adjustment coefficient; all gains are in units of 0dB, 0dB means change, greater than 0 means increase, and less than 0 means attenuation.
(1)增益修正因子f具体通过以下方式确定:(1) The gain correction factor f is specifically determined in the following manner:
当音频输入电视机,通过归一化预处理并完成EQ调试后,设置f=1,k=1,增加TV菜单音量值,在音频测试全频段内找到第一个失真点,记录此时的菜单音量v0,用于设置f:When the audio is input to the TV, after normalization preprocessing and EQ debugging is completed, set f = 1 and k = 1, increase the TV menu volume value, find the first distortion point in the full band of the audio test, and record the Menu volume v0, used to set f:
当v≥v0;f=(100-v)/(100-v0);When v≥v0; f = (100-v) / (100-v0);
当v<v0:f=1;When v <v0: f = 1;
v为用户菜单的实时音量值,只有当v≥v0时,f=(100-v)/(100-v0),当v<v0的时候,全频段音频都不失真,各频段增益不需要修正,所以设置f=1;当v=100时,电视机音量已调到最大,f=0,修正量到最大值,即不对该频段做增益。v is the real-time volume value of the user menu. Only when v≥v0, f = (100-v) / (100-v0). When v <v0, the full-band audio is not distorted, and the gain of each band does not need to be modified Therefore, set f = 1; when v = 100, the TV volume has been adjusted to the maximum, f = 0, and the correction amount has reached the maximum, that is, no gain is made for this frequency band.
(2)调节系数k具体通过以下方式确定:(2) The adjustment coefficient k is specifically determined by:
根据实际测试情况及可接受的失真度确定各频段用同一个k值,如下:According to the actual test conditions and acceptable distortion, the same k value is determined for each frequency band, as follows:
当v<v0时,k=1,不做修正;When v <v0, k = 1, without modification;
当v≥v0时,f*k<1;When v≥v0, f * k <1;
如果f*k>1,相当于会增加各频段增益,失真会更大;If f * k> 1, it is equivalent to increase the gain of each frequency band and the distortion will be greater;
如果f*k=1,相当于直通,对各频段增益不做修正。If f * k = 1, it is equivalent to pass-through, and the gain of each frequency band is not modified.
当第n频段修正后的增益为:When the n-band corrected gain is:
当v≥v0:G(n)’=G(n)*f*k=G(n)*[(100-v)/(100-v0)]*k;When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;
当v<v0:G(n)’=G(n);When v <v0: G (n) '= G (n);
最终增益Gm为:The final gain Gm is:
Gm(n)=G(n)’+Ga=G(n)*f*k+Ga=G(n)*[(100-v)/(100-v0)]*k+Ga;Gm (n) = G (n) '+ Ga = G (n) * f * k + Ga = G (n) * [(100-v) / (100-v0)] * k + Ga;
其中,Ga为功放后端增益。Among them, Ga is the back-end gain of the power amplifier.
本公开中,以频响曲线可划分为5段来进行说明,EQ调节时,对应频段的增益G1,G2,G3,G4,G5,如图4所示,音频信号经过信号处理模块(模块1)、音频调整模块(模块2)后,进入自动增益调节模块(模块3,AGA,Auto Gain Adjust),各频段的增益修正为G1’,G2’,G3’,G4’,G5’,其值计算公式为:In this disclosure, the frequency response curve can be divided into 5 sections for explanation. When EQ is adjusted, the gains of the corresponding frequency bands G1, G2, G3, G4, and G5 are shown in FIG. ) After the audio adjustment module (module 2), enter the automatic gain adjustment module (module 3, AGA, Auto Gain Adjust), the gain of each frequency band is modified to G1 ', G2', G3 ', G4', G5 ', its value The calculation formula is:
G1’=G1*f*k,G1 ’= G1 * f * k,
G2’=G2*f*k,G2 ’= G2 * f * k,
G3’=G3*f*k,G3 ’= G3 * f * k,
G4’=G4*f*k,G4 ’= G4 * f * k,
G5’=G5*f*k,G5 ’= G5 * f * k,
为了方便公式表达,所有增益都以dB为单位,0dB表示变化,大于0表示增加,小于0表示衰减。For the convenience of formula expression, all gains are expressed in dB. 0dB indicates change, greater than 0 indicates increase, and less than 0 indicates attenuation.
其中,增益修正因子f通过以下方法确定:Among them, the gain correction factor f is determined by the following methods:
音频输入电视机,通过模块1,在模块2完成EQ调试后,设置f=1,k=1,增加TV菜单音量值,在音频测试全频段内找到第一个失真点,从图三看应该是频段5最先出现失真(从图3中可以看出频段5的幅度最大),记录下此时的菜单音量v0,用于设置f:Audio input TV, through module 1, after module 2 completes the EQ debugging, set f = 1, k = 1, increase the TV menu volume value, find the first distortion point in the full frequency band of audio test. It is the first distortion in Band 5 (you can see from Figure 3 that Band 5 has the largest amplitude). Record the menu volume v0 at this time, which is used to set f:
当v≥v0;f=(100-v)/(100-v0); 公式(1)When v≥v0; f = (100-v) / (100-v0); Formula (1)
当v<v0:f=1;When v <v0: f = 1;
v为用户菜单的实时音量值,只有当v≥v0的时候f为公式(1)计算值,因为当v<v0的时候,全频段音频都不失真,各频段增益不需要修正,所以设置f=1;当v=100时,电视音量已调到最大,f=0,修正量到最大值,即不对该频段做增益。v is the real-time volume value of the user menu. Only when v≥v0 is f calculated by formula (1), because when v <v0, the full-band audio is not distorted, and the gain of each band does not need to be modified, so set f = 1; when v = 100, the TV volume has been adjusted to the maximum, f = 0, the correction amount has reached the maximum value, that is, no gain is made for this frequency band.
其中,调节系数k根据实际测试情况及可接受的失真度确定,各频段可以用同一个k值,也可以用不同的k值,以下为了描述方便各频段用同一k值。Among them, the adjustment coefficient k is determined according to the actual test conditions and acceptable distortion. Each frequency band can use the same k value, or different k values. The following description uses the same k value for the convenience of description.
当v<v0时,k=1,不做修正;When v <v0, k = 1, without modification;
当v≥v0时,一般情况f*k<1;When v≥v0, the general case f * k <1;
因为如果f*k>1,相当于AGA模块会增加各频段增益,失真会更大;Because if f * k> 1, it is equivalent to the AGA module will increase the gain of each frequency band, and the distortion will be greater;
如果f*k=1,相当于AGA模块直通,对各频段增益不做修正。If f * k = 1, it is equivalent to the straight-through of the AGA module, and no gain is modified for each frequency band.
最终第n频段修正后的增益为:The final corrected gain of the n-band is:
当v≥v0:G(n)’=G(n)*f*k=G(n)*[(100-v)/(100-v0)]*k;When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;
当v<v0:G(n)’=G(n)。When v <v0: G (n) '= G (n).
基准频段处理:由于音频测试额定功率时以1kHz为基准,属于参考基准,除了模块1和模块5以外,其他模块都不对其处理,所以频段3的频段增益始终为0,即G3=G3’。Reference frequency band processing: Because the rated power of the audio test is based on 1kHz, it belongs to the reference standard. Except for module 1 and module 5, other modules do not process it. Therefore, the band gain of frequency band 3 is always 0, that is, G3 = G3 ’.
故从图4中看出,音频信号经过模块1至模块5后,最终增益Gm为:Therefore, it can be seen from FIG. 4 that after the audio signal passes through modules 1 to 5, the final gain Gm is:
Gm(n)=G(n)’+Ga=G(n)*f*k+Ga=G(n)*[(100-v)/(100-v0)]*k+Ga;Gm (n) = G (n) '+ Ga = G (n) * f * k + Ga = G (n) * [(100-v) / (100-v0)] * k + Ga;
其中,Ga为功放后端增益。Among them, Ga is the back-end gain of the power amplifier.
本公开中的核心参数f的确定方法不仅限于只有五段音频划分的EQ曲线,可以扩展到任意多的分段,其设置方法一样。The determination method of the core parameter f in the present disclosure is not limited to the EQ curve with only five segments of audio division, and can be extended to any number of segments, and the setting method is the same.
进一步地,当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭;通过功放电路来驱动喇叭,以达到整机需要的额定功率。Further, when the volume of the input source exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker; the speaker is driven by a power amplifier circuit to achieve the rated power required by the entire machine.
实施例2Example 2
如图4所示,本公开还提供了一种音效控制装置,其中,所述音效控制装置包括:信号处理模块(模块1)101,用于接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理;音频调整模块(模块2)102,用于在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;自动增益调节模块(模块3)103,用于当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益;动态范围压缩模块(模块4)104,用于当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭;功放电路驱动模块(模块5)105,用于通过功放电路来驱动喇叭,以达到整机需要的额定功率。As shown in FIG. 4, the present disclosure also provides a sound effect control device, wherein the sound effect control device includes: a signal processing module (module 1) 101 for receiving signals of different channels and inputting signals of different channels Normalized preprocessing to facilitate unified processing after unifying the signal standard; audio adjustment module (module 2) 102 is used to divide the frequency response within a preset range into multiple frequency bands and perform sub-banding in the standard test state Processing to adjust the audio size; automatic gain adjustment module (module 3) 103 is used to modify the gain of each frequency band through the gain correction factor and adjustment coefficient according to the real-time volume value of the user menu after the sub-band processing is completed; the dynamic range compression module ( Module 4) 104 is used to limit the maximum output through dynamic range compression when the input source volume exceeds a predetermined value, and is used to protect the speaker; the amplifier circuit drive module (module 5) 105 is used to drive the speaker through the amplifier circuit to achieve The rated power required by the whole machine.
实施例3Example 3
如图5所示,基于上述音效控制方法,本公开还相应提供了一种电视机,所述电视机包括处理器10、存储器20及显示器30。图5仅示出了电视机的部分组件,但是应理解的是,并不要求实施所有示出的组件,可以替代的实施更多或者更少的组件。As shown in FIG. 5, based on the above-mentioned sound effect control method, the present disclosure also provides a television correspondingly. The television includes a processor 10, a memory 20, and a display 30. FIG. 5 shows only some of the components of the television, but it should be understood that it is not required to implement all the illustrated components, and more or fewer components may be implemented instead.
所述存储器20在一些实施例中可以是所述电视机的内部存储单元,例如电视机的硬盘或内存。所述存储器20在另一些实施例中也可以是所述电视机的外部存储设备,例如所述电视机上配备的插接式硬盘,智能存储卡(Smart Media Card,SMC),安全数字(Secure Digital,SD)卡,闪存卡(Flash Card)等。进一步地,所述存储器20还可以既包括所电视机的内部存储单元也包括外部存储设备。所述存储器20用于存储安装于所述电视机的应用软件及各类数据,例如所述安装电视机的程序代码等。所述存储器20还可以用于暂时地存储已经输出或者将要输出的数据。在一实施例中,存储器20上存储有音效控制程序40,该音效控制程序40可被处理器10所执行,从而实现本申请中音效控制方法。In some embodiments, the memory 20 may be an internal storage unit of the television, such as a hard disk or a memory of the television. In other embodiments, the memory 20 may also be an external storage device of the TV, such as a plug-in hard disk, a Smart Media Card (SMC), and a Secure Digital , SD) card, flash memory card (Flash card), etc. Further, the memory 20 may include both an internal storage unit of the television and an external storage device. The memory 20 is configured to store application software installed on the television and various types of data, such as program codes of the television installed. The memory 20 may also be used to temporarily store data that has been or will be output. In one embodiment, a sound effect control program 40 is stored in the memory 20, and the sound effect control program 40 can be executed by the processor 10 to implement the sound effect control method in the present application.
所述处理器10在一些实施例中可以是一中央处理器(Central Processing Unit,CPU),微处理器或其他数据处理芯片,用于运行所述存储器20中存储的程序代码或处理数据,例如执行所述音效控制方法等。In some embodiments, the processor 10 may be a central processing unit (CPU), a microprocessor, or other data processing chip, configured to run program codes or process data stored in the memory 20, such as The sound effect control method and the like are executed.
所述显示器30在一些实施例中可以是LED显示器、液晶显示器、触控式液晶显示器以及OLED(Organic Light-Emitting Diode,有机发光二极管)触摸器等。所述显示器30用于显示在所述电视机的信息以及用于显示可视化的用户界面。所述电视机的部件10-30通过***总线相互通信。In some embodiments, the display 30 may be an LED display, a liquid crystal display, a touch-type liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, or the like. The display 30 is used to display information on the television and a visual user interface. The components 10-30 of the television set communicate with each other through a system bus.
在一实施例中,当处理器10执行所述存储器20中音效控制程序40时实现以下步骤:In an embodiment, when the processor 10 executes the sound effect control program 40 in the memory 20, the following steps are implemented:
接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理;Receive the signals of different channels and normalize the pre-processing of the signal inputs of different channels, which is convenient for unified processing after unifying the signal standards;
在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;Divides the frequency response within the preset range into multiple frequency bands under standard test conditions, and performs sub-band processing to adjust the audio size;
当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益。After the sub-band processing is completed, the gain of each band is corrected by the gain correction factor and the adjustment coefficient according to the real-time volume value of the user menu.
实施例4Example 4
本公开还提供一种存储介质,其中,所述存储介质存储有音效控制程序,所述音效控制程序被处理器执行时实现如上所述音效控制方法的步骤;具体如上所述。The present disclosure also provides a storage medium, wherein the storage medium stores a sound effect control program, and when the sound effect control program is executed by a processor, implements the steps of the sound effect control method as described above; specifically as described above.
综上所述,本公开提供一种音效控制方法、装置、电视机及存储介质,所述 方法包括:接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理;在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益;当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭;通过功放电路来驱动喇叭,以达到整机需要的额定功率。本公开根据用户菜单实时的音量值,来修正各频段增益,使音量即使开到最大时,全频段音频波形不失真或失真很小,实现在用户音量开得很大时,适当改变EQ曲线各频段的增益,以减小失真,可以有效降低收看电视时的音频失真,提升用户观看的满意度。In summary, the present disclosure provides a sound effect control method, device, television, and storage medium. The method includes: receiving signals of different channels, and normalizing pre-processing of signal inputs of different channels to unify the signal After the standard, it is convenient for unified processing. In the standard test state, the frequency response in the preset range is divided into multiple frequency bands, and sub-band processing is performed to adjust the audio size. Gain correction factors and adjustment coefficients are used to modify the gain of each band; when the input source volume exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker; the speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine. According to the present disclosure, the gain of each frequency band is modified according to the real-time volume value of the user menu, so that even when the volume is turned on to the maximum, the full-band audio waveform is not distorted or the distortion is small. Gain in the frequency band to reduce distortion can effectively reduce audio distortion when watching TV and improve user viewing satisfaction.
当然,本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来指令相关硬件(如处理器,控制器等)来完成,所述的程序可存储于一计算机可读取的存储介质中,所述程序在执行时可包括如上述各方法实施例的流程。其中所述的存储介质可为存储器、磁碟、光盘等。Of course, a person of ordinary skill in the art can understand that the implementation of all or part of the processes in the methods of the foregoing embodiments can be accomplished by using a computer program to instruct related hardware (such as a processor, a controller, etc.), and the program can be stored in a In a computer-readable storage medium, when the program is executed, the program may include processes according to the foregoing method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, or the like.
应当理解的是,本公开的应用不限于上述的举例,对本领域普通技术人员来说,可以根据上述说明加以改进或变换,所有这些改进和变换都应属于本公开所附权利要求的保护范围。It should be understood that the application of the present disclosure is not limited to the above examples. For those of ordinary skill in the art, improvements or changes can be made according to the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present disclosure.
本公开提供的音效控制方法、装置、电视机及存储介质,根据用户菜单实时的音量值,来修正各频段增益,使音量即使开到最大时,全频段音频波形不失真或失真很小,实现在用户音量开得很大时,适当改变EQ曲线各频段的增益,以减小失真,可以有效降低收看电视时的音频失真,提升用户观看的满意度。The sound effect control method, device, television and storage medium provided by the present disclosure correct the gain of each frequency band according to the real-time volume value of the user menu, so that even when the volume is turned on at maximum, the full-band audio waveform is not distorted or has very little distortion. When the user's volume is very high, appropriately changing the gain of each frequency band of the EQ curve to reduce distortion can effectively reduce audio distortion when watching TV and improve user viewing satisfaction.
Claims (15)
- 一种音效控制方法,其特征在于,所述音效控制方法包括:A sound effect control method, characterized in that the sound effect control method includes:接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理;Receive the signals of different channels and normalize the pre-processing of the signal inputs of different channels, which is convenient for unified processing after unifying the signal standards;在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;Divides the frequency response within the preset range into multiple frequency bands under standard test conditions, and performs sub-band processing to adjust the audio size;当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益。After the sub-band processing is completed, the gain of each band is corrected by the gain correction factor and the adjustment coefficient according to the real-time volume value of the user menu.
- 根据权利要求1所述的音效控制方法,其特征在于,所述当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益之后还包括:The sound effect control method according to claim 1, wherein after the subband processing is completed, correcting the gain of each band by using a gain correction factor and an adjustment coefficient according to the real-time volume value of the user menu, further comprising:当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭。When the input source volume exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker.
- 根据权利要求2所述的音效控制方法,其特征在于,所述根据用户菜单实时的音量值,所述当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭之后还包括:The sound effect control method according to claim 2, wherein the real-time volume value according to the user menu, and when the input source volume exceeds a predetermined value, limiting the maximum output through dynamic range compression is used to protect the speaker after include:通过功放电路来驱动喇叭,以达到整机需要的额定功率。The speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine.
- 根据权利要求1所述的音效控制方法,其特征在于,根据用户菜单实时的音量值,来修正各频段增益,使音量即使开到最大时,全频段音频波形不失真或失真很小。The sound effect control method according to claim 1, wherein the gain of each frequency band is modified according to the real-time volume value of the user menu, so that even when the volume is turned on at maximum, the full-band audio waveform is not distorted or has little distortion.
- 根据权利要求1所述的音效控制方法,其特征在于,所述当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益具体包括:The sound effect control method according to claim 1, wherein after the sub-band processing is completed, correcting the gain of each frequency band through a gain correction factor and an adjustment coefficient according to the real-time volume value of the user menu includes:将频响曲线划分为n段,当EQ调节时,将对应频段的增益G1,G2,G3,G4,……Gn修正为G1’,G2’,G3’,G4’……Gn’,其值计算公式为:Divide the frequency response curve into n segments. When EQ is adjusted, the gains of the corresponding frequency bands G1, G2, G3, G4, ... Gn are modified to G1 ', G2', G3 ', G4' ... Gn ', and their values The calculation formula is:G1’=G1*f*k,G1 ’= G1 * f * k,G2’=G2*f*k,G2 ’= G2 * f * k,G3’=G3*f*k,G3 ’= G3 * f * k,G4’=G4*f*k,……G4 ’= G4 * f * k, ...Gn’=Gn*f*k,Gn ’= Gn * f * k,其中,f为增益修正因子,k为调节系数;所有增益都以0dB为单位,0dB表示变化,大于0表示增加,小于0表示衰减。Among them, f is the gain correction factor and k is the adjustment coefficient; all gains are in units of 0dB, 0dB means change, greater than 0 means increase, and less than 0 means attenuation.
- 根据权利要求5所述的音效控制方法,其特征在于,增益修正因子f具体通过以下方式确定:The sound effect control method according to claim 5, wherein the gain correction factor f is specifically determined in the following manner:当音频输入电视机,通过归一化预处理并完成EQ调试后,设置f=1,k=1,增加TV菜单音量值,在音频测试全频段内找到第一个失真点,记录此时的菜单音量v0,用于设置f:When the audio is input to the TV, after normalization preprocessing and EQ debugging is completed, set f = 1 and k = 1, increase the TV menu volume value, find the first distortion point in the full band of the audio test, and record the Menu volume v0, used to set f:当v≥v0:f=(100-v)/(100-v0);When v≥v0: f = (100-v) / (100-v0);当v<v0:f=1;When v <v0: f = 1;v为用户菜单的实时音量值,只有当v≥v0时,f=(100-v)/(100-v0),当v<v0的时候,全频段音频都不失真,各频段增益不需要修正,所以设置f=1;当v=100时,电视机音量已调到最大,f=0,修正量到最大值,即不对该频段做增益。v is the real-time volume value of the user menu. Only when v≥v0, f = (100-v) / (100-v0). When v <v0, the full-band audio is not distorted, and the gain of each band does not need to be modified Therefore, set f = 1; when v = 100, the TV volume has been adjusted to the maximum, f = 0, and the correction amount has reached the maximum, that is, no gain is made for this frequency band.
- 根据权利要求6所述的音效控制方法,其特征在于,调节系数k根据实际测试情况及可接受的失真度确定。The sound effect control method according to claim 6, wherein the adjustment coefficient k is determined according to an actual test situation and an acceptable distortion.
- 根据权利要求6所述的音效控制方法,其特征在于,调节系数k具体通过以下方式确定:The sound effect control method according to claim 6, wherein the adjustment coefficient k is specifically determined in the following manner:根据实际测试情况及可接受的失真度确定各频段用同一个k值,如下:According to the actual test conditions and acceptable distortion, the same k value is determined for each frequency band, as follows:当v<v0时,k=1,不做修正;When v <v0, k = 1, without modification;当v≥v0时,f*k<1;When v≥v0, f * k <1;如果f*k>1,相当于会增加各频段增益,失真会更大;If f * k> 1, it is equivalent to increase the gain of each frequency band and the distortion will be greater;如果f*k=1,相当于直通,对各频段增益不做修正。If f * k = 1, it is equivalent to pass-through, and the gain of each frequency band is not modified.
- 根据权利要求8所述的音效控制方法,其特征在于,当第n频段修正后的增益为:The sound effect control method according to claim 8, characterized in that when the n-band is modified, the gain is:当v≥v0:G(n)’=G(n)*f*k=G(n)*[(100-v)/(100-v0)]*k;When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;当v<v0:G(n)’=G(n);When v <v0: G (n) '= G (n);最终增益Gm为:The final gain Gm is:Gm(n)=G(n)’+Ga=G(n)*f*k+Ga=G(n)*[(100-v)/(100-v0)]*k+Ga;Gm (n) = G (n) '+ Ga = G (n) * f * k + Ga = G (n) * [(100-v) / (100-v0)] * k + Ga;其中,Ga为功放后端增益。Among them, Ga is the back-end gain of the power amplifier.
- 根据权利要求8所述的音效控制方法,其特征在于,调整音频EQ,在标 准测试状态下对100Hz-20KHz进行分频段处理,分成了五个频段。The sound effect control method according to claim 8, characterized in that the audio EQ is adjusted, and 100 Hz-20 KHz is divided into frequency bands in a standard test state, and divided into five frequency bands.
- 根据权利要求10所述的音效控制方法,其特征在于,各频段为用同一个k值或者为不同的k值。The sound effect control method according to claim 10, wherein each frequency band uses a same k value or different k values.
- 根据权利要求10所述的音效控制方法,其特征在于,EQ调节时,对应频段的增益G1,G2,G3,G4,G5,音频信号经过信号处理模块和音频调整模块后,进入自动增益调节模块进行各频段的增益修正。The sound effect control method according to claim 10, wherein during EQ adjustment, the gains of the corresponding frequency bands G1, G2, G3, G4, G5, and the audio signal enter the automatic gain adjustment module after passing through the signal processing module and the audio adjustment module. Perform gain correction for each frequency band.
- 一种音效控制装置,其特征在于,所述音效控制装置包括:A sound effect control device, characterized in that the sound effect control device includes:信号处理模块,用于接收不同通道的信号,并将不同通道的信号输入进行归一化预处理,统一信号的标准后便于统一处理;The signal processing module is used for receiving signals of different channels, and normalizing preprocessing of the signal inputs of different channels, which is convenient for unified processing after unifying the signal standards;音频调整模块,用于在标准测试状态下将预设范围内的频响划分为多个频段,并进行分频段处理以调整音频大小;An audio adjustment module, which is used to divide the frequency response within a preset range into multiple frequency bands under standard test conditions, and perform sub-band processing to adjust the audio size;自动增益调节模块,用于当分频段处理完成后,根据用户菜单实时的音量值,通过增益修正因子和调节系数来修正各频段增益;An automatic gain adjustment module is used to modify the gain of each frequency band by using a gain correction factor and an adjustment coefficient according to the real-time volume value of the user menu after the sub-band processing is completed;动态范围压缩模块,用于当输入源音量超过预定值时,通过动态范围压缩限制最大输出,用于保护喇叭;Dynamic range compression module, used to limit the maximum output through dynamic range compression when the input source volume exceeds a predetermined value, and is used to protect the speaker;功放电路驱动模块,用于通过功放电路来驱动喇叭,以达到整机需要的额定功率。The power amplifier circuit driving module is used to drive the speaker through the power amplifier circuit to achieve the rated power required by the whole machine.
- 一种电视机,其特征在于,所述电视机包括:存储器、处理器及存储在所述存储器上并可在所述处理器上运行的音效控制程序,所述音效控制程序被所述处理器执行时实现如权利要求1-12任一项所述的音效控制方法的步骤。A television, characterized in that the television includes a memory, a processor, and a sound effect control program stored on the memory and operable on the processor. The sound effect control program is controlled by the processor. When executed, the steps of implementing the sound effect control method according to any one of claims 1-12.
- 一种存储介质,其特征在于,所述存储介质存储有音效控制程序,所述音效控制程序被处理器执行时实现如权利要求1-12任一项所述音效控制方法的步骤。A storage medium, characterized in that the storage medium stores a sound effect control program, and when the sound effect control program is executed by a processor, the steps of the sound effect control method according to any one of claims 1-12 are implemented.
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CN110211552B (en) * | 2019-05-22 | 2023-07-14 | 海信视像科技股份有限公司 | Audio processing method and device |
CN110364188A (en) * | 2019-07-12 | 2019-10-22 | 深圳创维-Rgb电子有限公司 | Audio frequency playing method, device and computer readable storage medium |
CN110572720A (en) * | 2019-09-12 | 2019-12-13 | 深圳创维-Rgb电子有限公司 | Television and television control method, control device and readable storage medium thereof |
CN112153315B (en) * | 2020-08-31 | 2023-08-11 | 惠州高盛达智显科技有限公司 | Signal source channel sound sensitivity adjusting method and system based on power protection feedback |
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US20080037805A1 (en) * | 2006-04-17 | 2008-02-14 | Sony Corporation | Audio output device and method for calculating parameters |
CN106878806A (en) * | 2017-03-09 | 2017-06-20 | 深圳创维-Rgb电子有限公司 | Audio method of adjustment, device and television set |
CN107333076A (en) * | 2017-06-26 | 2017-11-07 | 青岛海信电器股份有限公司 | The method of adjustment of television set and its audio signal intermediate frequency point data, device |
CN107682802A (en) * | 2017-11-08 | 2018-02-09 | 深圳市康冠商用科技有限公司 | The adjustment method and device of audio frequency apparatus audio |
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US20080037805A1 (en) * | 2006-04-17 | 2008-02-14 | Sony Corporation | Audio output device and method for calculating parameters |
CN106878806A (en) * | 2017-03-09 | 2017-06-20 | 深圳创维-Rgb电子有限公司 | Audio method of adjustment, device and television set |
CN107333076A (en) * | 2017-06-26 | 2017-11-07 | 青岛海信电器股份有限公司 | The method of adjustment of television set and its audio signal intermediate frequency point data, device |
CN107682802A (en) * | 2017-11-08 | 2018-02-09 | 深圳市康冠商用科技有限公司 | The adjustment method and device of audio frequency apparatus audio |
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