WO2020042407A1

WO2020042407A1 - Sound control method, device, television, and storage medium

Info

Publication number: WO2020042407A1
Application number: PCT/CN2018/118562
Authority: WO
Inventors: 王兴伟; 沈文钊; 马川; 付洋; 鲍恒
Original assignee: 深圳创维－Rgb电子有限公司
Priority date: 2018-08-27
Filing date: 2018-11-30
Publication date: 2020-03-05
Also published as: CN109151562B; CN109151562A

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

Sound effect control method, device, television and storage medium

Technical field

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.

Background technique

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.

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.

Therefore, the existing technology needs to be improved and developed.

Summary of the Invention

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.

The technical solutions adopted by the present disclosure to solve technical problems are as follows:

A sound effect control method, wherein the sound effect control method includes:

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;

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;

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.

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:

When the input source volume exceeds a predetermined value, 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.

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.

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:

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,

G2 ’= G2 * f * k,

G3 ’= G3 * f * k,

G4 ’= G4 * f * k, ...

Gn ’= Gn * f * k,

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.

In the sound effect control method, the gain correction factor f is specifically determined in the following manner:

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:

When v≥v0; f = (100-v) / (100-v0);

When v <v0: f = 1;

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.

In the sound effect control method, the adjustment coefficient k is determined according to actual test conditions and acceptable distortion.

In the sound effect control method, the adjustment coefficient k is specifically determined in the following manner:

According to the actual test conditions and acceptable distortion, the same k value is determined for each frequency band, as follows:

When v <v0, k = 1, without modification;

When v≥v0, f * k <1;

If f * k> 1, it is equivalent to increase the gain of each frequency band and the distortion will be greater;

If f * k = 1, it is equivalent to pass-through, and the gain of each frequency band is not modified.

The sound effect control method, wherein when the n-band is modified, the gain is:

When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;

When v <v0: G (n) '= G (n);

The final gain Gm is:

Gm (n) = G (n) '+ Ga = G (n) * f * k + Ga = G (n) * [(100-v) / (100-v0)] * k + Ga;

Among them, Ga is the back-end gain of the power amplifier.

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.

In the sound effect control method, each frequency band uses a same k value or different k values.

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. .

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. When 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. 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.

BRIEF DESCRIPTION OF THE DRAWINGS

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.

detailed description

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.

Example 1

As shown in FIG. 2, the sound effect control method according to the preferred embodiment of the present disclosure includes the following steps:

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.

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.

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.

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.

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.

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.

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:

G1 ’= G1 * f * k,

G2 ’= G2 * f * k,

G3 ’= G3 * f * k,

G4 ’= G4 * f * k, ...

Gn ’= Gn * f * k,

(1) The gain correction factor f is specifically determined in the following manner:

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:

When v≥v0; f = (100-v) / (100-v0);

When v <v0: f = 1;

(2) The adjustment coefficient k is specifically determined by:

When v <v0, k = 1, without modification;

When v≥v0, f * k <1;

When the n-band corrected gain is:

When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;

When v <v0: G (n) '= G (n);

The final gain Gm is:

Among them, Ga is the back-end gain of the power amplifier.

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,

G2 ’= G2 * f * k,

G3 ’= G3 * f * k,

G4 ’= G4 * f * k,

G5 ’= G5 * f * k,

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.

Among them, the gain correction factor f is determined by the following methods:

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:

When v≥v0; f = (100-v) / (100-v0); Formula (1)

When v <v0: f = 1;

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.

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.

When v <v0, k = 1, without modification;

When v≥v0, the general case f * k <1;

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;

If f * k = 1, it is equivalent to the straight-through of the AGA module, and no gain is modified for each frequency band.

The final corrected gain of the n-band is:

When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;

When v <v0: G (n) '= G (n).

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 ’.

Therefore, it can be seen from FIG. 4 that after the audio signal passes through modules 1 to 5, the final gain Gm is:

Among them, 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.

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.

Example 2

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.

Example 3

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.

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.

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.

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.

In an embodiment, when the processor 10 executes the sound effect control program 40 in the memory 20, the following steps are implemented:

Example 4

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.

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.

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.

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.

Industrial applicability

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

A sound effect control method, characterized in that the sound effect control method includes:

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;

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;

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.
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:

When the input source volume exceeds a predetermined value, the maximum output is limited by dynamic range compression to protect the speaker.
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:

The speaker is driven by the power amplifier circuit to achieve the rated power required by the whole machine.
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.
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:

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,

G2 ’= G2 * f * k,

G3 ’= G3 * f * k,

G4 ’= G4 * f * k, ...

Gn ’= Gn * f * k,

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.
The sound effect control method according to claim 5, wherein the gain correction factor f is specifically determined in the following manner:

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:

When v≥v0: f = (100-v) / (100-v0);

When v <v0: f = 1;

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.
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.
The sound effect control method according to claim 6, wherein the adjustment coefficient k is specifically determined in the following manner:

According to the actual test conditions and acceptable distortion, the same k value is determined for each frequency band, as follows:

When v <v0, k = 1, without modification;

When v≥v0, f * k <1;

If f * k> 1, it is equivalent to increase the gain of each frequency band and the distortion will be greater;

If f * k = 1, it is equivalent to pass-through, and the gain of each frequency band is not modified.
The sound effect control method according to claim 8, characterized in that when the n-band is modified, the gain is:

When v≥v0: G (n) '= G (n) * f * k = G (n) * [(100-v) / (100-v0)] * k;

When v <v0: G (n) '= G (n);

The final gain Gm is:

Gm (n) = G (n) '+ Ga = G (n) * f * k + Ga = G (n) * [(100-v) / (100-v0)] * k + Ga;

Among them, Ga is the back-end gain of the power amplifier.
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.
The sound effect control method according to claim 10, wherein each frequency band uses a same k value or different k values.
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.
A sound effect control device, characterized in that 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, 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.
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.