CN109274909B - Television sound adjusting method, television and storage medium - Google Patents
Television sound adjusting method, television and storage medium Download PDFInfo
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- CN109274909B CN109274909B CN201811096965.XA CN201811096965A CN109274909B CN 109274909 B CN109274909 B CN 109274909B CN 201811096965 A CN201811096965 A CN 201811096965A CN 109274909 B CN109274909 B CN 109274909B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
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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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Abstract
The invention discloses a television sound adjusting method, a television and a storage medium, comprising the following steps: sending out an original audio signal; receiving an actual audio signal sent by a sound collector, wherein the actual audio signal is an audio signal collected by the sound collector within a preset range of the television; and adjusting the original audio signal according to the actual audio signal. The invention can adjust the audio parameters of the original audio signal according to the actual audio signal received at the actual position, and solves the problem that the adjusted audio parameters are not matched with the use environment in the prior art. According to the listening position of the user, the audio parameters are automatically adjusted, the sound quality and the sound effect of the sound heard by the user are improved, and the listening and watching experience of the user is improved.
Description
Technical Field
The invention relates to the technical field of televisions, in particular to a television sound adjusting method, a television and a storage medium.
Background
With the continuous improvement of the living standard of people, a television is one of household appliances with the highest retention amount and becomes a part of daily life of people, the requirement of people on the definition of a display picture of the television is higher and higher, and the requirement on the sound effect of the television is also higher.
The audio parameters of the television are taken as an important technical index for measuring the sound effect of the television, and are debugged by sound engineers in a fixed test room environment at present, wherein the debugged audio parameters comprise: sound curve, frequency response corresponding to each sound mode, surround sound, high level sound effect, heavy bass and other parameters. Since the environment of the television set is different in each user's home, sound is reflected by obstacles such as walls, ceilings, floors and the like when being transmitted indoors, and each reflection is absorbed by the obstacle. These all contribute to a different degree of attenuation of the sound. The prior art reduces the influence of the external environment on the sound effect by the following method: a microphone is arranged in the television to collect reflected sound of original sound emitted by the television and reflected by people or objects (such as walls, houses and the like) in the environment, and audio parameters of the television are adjusted according to the reflected sound. This method is not practical because users watch tv in different places in the room, sound is reflected by the environment, and the degree of absorption is different, resulting in mismatching of the audio parameters adjusted by this method with the use environment.
Disclosure of Invention
The invention mainly aims to provide a television sound adjusting method, a television and a storage medium, and aims to solve the problem that an audio parameter is not matched with a use environment in the existing television sound adjusting technology.
In order to achieve the above object, the present invention provides a method for adjusting a television sound, comprising the steps of:
sending out an original audio signal;
receiving an actual audio signal sent by a sound collector, wherein the actual audio signal is an audio signal collected by the sound collector within a preset range of the television;
and adjusting the original audio signal according to the actual audio signal.
Optionally, the step of emitting the original audio signal is preceded by:
receiving a control signal sent by a controller, and acquiring a function mode of the television according to the control signal;
when the function mode is sound adjustment, executing the following steps: the original audio signal is emitted.
Optionally, the step of adjusting the original audio signal according to the actual audio signal includes:
acquiring the calibration gain of the original audio signal by taking the actual audio signal as a reference;
obtaining equalizer parameters according to the calibration gain;
and controlling the equalizer to perform frequency response calibration on the original audio signal by using the equalizer parameter.
Optionally, the step of obtaining the calibration gain of the original audio signal according to the actual audio signal as a reference includes:
sampling the actual audio signal to obtain a digital audio signal;
obtaining a frequency response parameter of the digital audio signal according to the digital audio signal;
and calculating to obtain calibration gain according to the frequency response parameters.
Optionally, the step of obtaining the frequency response parameter of the digital audio signal according to the digital audio signal includes:
and performing fast Fourier transform on the digital audio signal to generate a plurality of frequency bands and frequency response parameters corresponding to each frequency band, wherein the bandwidths of the frequency bands are equal.
Optionally, the step of calculating a calibration gain according to the frequency response parameter includes:
grouping the plurality of frequency bands, and calculating the average sound pressure of each group of frequency bands according to the frequency response parameters;
determining reference sound pressure according to the average sound pressure of each group of frequency bands;
and obtaining the calibration gain of each group of frequency bands according to the reference sound pressure.
Optionally, the frequency response parameter comprises a sound pressure of each frequency band of the respective set of frequency bands; the step of calculating the average sound pressure of each group of frequency bands according to the frequency response parameters comprises:
the average sound pressure for each set of frequency bands is calculated using the following formula:
SPLn＝10lg[10^(SPL1/10)+10^(SPL2/10)+10^(SPL3/10)+10^(SPL4/10)+...+10^(SPLm/10)]
wherein, SPLn represents the average sound pressure of each frequency band in the nth group; SPLm represents the sound pressure of the mth frequency band in the group, respectively; n and m are each an integer greater than 0.
Optionally, the step of adjusting the original audio signal according to the actual audio signal includes:
comparing the actual audio signal with the original audio signal to obtain a comparison result;
acquiring calibration gain of the original audio signal according to the comparison result;
and adjusting the original audio signal according to the calibration gain.
In addition, to achieve the above object, the present invention also provides a television set, including: the system comprises a memory, a processor and a television sound adjusting program stored on the memory and capable of running on the processor, wherein the television sound adjusting program realizes the steps of the television sound adjusting method when being executed by the processor.
Furthermore, to achieve the above object, the present invention further provides a computer readable storage medium having a television sound adjustment program stored thereon, which when executed by a processor implements the steps of the television sound adjustment method as described above.
According to the television sound adjusting method, the television and the storage medium provided by the embodiment of the invention, the original audio signal is sent by the television, the original audio signal is collected by the sound collector within the preset range of the television, the actual audio signal formed by the original audio signal subjected to the environmental factors in the transmission process is obtained, the actual audio signal and the original audio signal are analyzed and calculated, and the original audio signal is adjusted according to the analysis and calculation result. Therefore, the problems that the audio parameters of the television are not adjusted due to environmental differences so that the sound distortion and the sound quality heard by the user are damaged are solved, and the sound effect experience of the user when watching the television can be improved. The problem of adjusting audio parameters and using environment mismatch in the existing television sound adjusting technology is solved.
Drawings
FIG. 1 is a schematic diagram of the structure of an apparatus according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a television sound adjusting method according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a television sound adjusting method according to a second embodiment of the present invention;
fig. 4 is a detailed flowchart of step S32 in the third embodiment of the tv sound adjustment method according to the present invention;
fig. 5 is a detailed flowchart of step S31 in the fourth embodiment of the tv sound adjustment method according to the present invention;
fig. 6 is a detailed flowchart of step S312 in the fourth embodiment of the television sound adjustment method according to the present invention;
FIG. 7 is a flowchart illustrating a detailed process of step S313 in the fourth embodiment of the TV sound adjustment method according to the present invention;
fig. 8 is a flowchart illustrating a television sound adjusting method according to a fifth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention is a television, and can also be a mobile terminal device with a power amplification function, such as a smart phone, a tablet computer, an electronic book reader, an MP3(Moving Picture Experts Group Audio Layer III, dynamic video Experts compress standard Audio Layer 3) player, an MP4(Moving Picture Experts Group Audio Layer IV, dynamic video Experts compress standard Audio Layer 4) player, a portable computer, and the like.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display (Display), a power amplifier, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the terminal may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. Of course, the hardware device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and so on, which are not described herein again.
The processor 1001 may be configured to call the television sound adjustment program stored in the memory 1005, and execute the following steps implemented in the television sound adjustment method:
sending out an original audio signal;
receiving an actual audio signal sent by a sound collector, wherein the actual audio signal is an audio signal collected by the sound collector within a preset range of the television;
and adjusting the original audio signal according to the actual audio signal.
Further, the processor 1001 may be configured to call a television sound adjustment program stored in the memory 1005, and further perform the following operations:
receiving a control signal sent by a controller, and acquiring a function mode of the television according to the control signal;
when the function mode is sound adjustment, executing the following steps: the original audio signal is emitted.
Further, the processor 1001 may be configured to call a television sound adjustment program stored in the memory 1005, and further perform the following operations:
acquiring the calibration gain of the original audio signal by taking the actual audio signal as a reference;
obtaining equalizer parameters according to the calibration gain;
and controlling the equalizer to perform frequency response calibration on the original audio signal by using the equalizer parameter.
Further, the processor 1001 may be configured to call a television sound adjustment program stored in the memory 1005, and further perform the following operations:
sampling the actual audio signal to obtain a digital audio signal;
obtaining a frequency response parameter of the digital audio signal according to the digital audio signal;
and calculating to obtain calibration gain according to the frequency response parameters.
Further, the processor 1001 may be configured to call a television sound adjustment program stored in the memory 1005, and further perform the following operations:
and performing fast Fourier transform on the digital audio signal to generate a plurality of frequency bands and frequency response parameters corresponding to each frequency band, wherein the bandwidths of the frequency bands are equal.
Further, the processor 1001 may be configured to call a television sound adjustment program stored in the memory 1005, and further perform the following operations:
grouping the plurality of frequency bands, and calculating the average sound pressure of each group of frequency bands according to the frequency response parameters;
determining reference sound pressure according to the average sound pressure of each group of frequency bands;
and obtaining the calibration gain of each group of frequency bands according to the reference sound pressure.
Further, the processor 1001 may be configured to call a television sound adjustment program stored in the memory 1005, and further perform the following operations:
comparing the actual audio signal with the original audio signal to obtain a comparison result;
acquiring calibration gain of the original audio signal according to the comparison result;
and adjusting the original audio signal according to the calibration gain.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
Referring to fig. 2, fig. 2 is a flowchart illustrating a television sound adjusting method according to a first embodiment of the present invention, wherein the television sound adjusting method includes the following steps:
step S10, sending out original audio signal;
in this embodiment, the television sound adjustment program is installed on a terminal, and the terminal may be a television, or may be a mobile terminal device having a power amplification function, such as a smart phone, a tablet computer, an electronic book reader, an MP3(Moving Picture Experts Group Audio Layer III, motion Picture Experts compression standard Audio Layer 3) player, an MP4(Moving Picture Experts Group Audio Layer IV, motion Picture Experts compression standard Audio Layer 4) player, and a portable computer. In this embodiment, a television will be described as an example. When the TV is in normal working state, the TV sends out original audio signal, which refers to the frequency and amplitude variation information carrier of regular sound wave with voice, music and sound effect. The frequency bandwidth of the audio signal is generally called the bandwidth, which is in the range of 20Hz to 20KHz, i.e. the audio signal that conforms to the hearing range of human ears, and the audio signal sent by the television set is the original audio signal without calibration adjustment.
Step S20, receiving an actual audio signal sent by a sound collector, wherein the actual audio signal is an audio signal collected by the sound collector within a preset range of the television;
in this embodiment, the sound collector refers to a device capable of collecting an original audio signal sent by a television, and since an audio parameter in the original audio signal sent by the television is changed after the original audio signal is influenced by an environment in a propagation process, the audio signal collected by the sound collector is an actual audio signal, and the actual audio signal is an audio signal collected by the sound collector after the original audio signal is propagated. The sound collector is arranged in a preset range around the television, and the preset range of the television comprises listening positions of users when the television is actually used, namely a set of positions where the users can listen to the sound of the television. The place set by the sound collector is used as the place where the user actually receives the original audio signal sent by the television, and the actual audio signal collected by the sound collector corresponds to the tone quality and the sound effect of the sound received by the user at the place. The actual audio signal is collected through the sound collector, and the listening experience of the user at the position can be accurately acquired.
It should be noted that, the mode for the television to receive the actual audio signal collected by the sound collector within the preset range of the television may be a wireless data transmission mode. Optionally, the sound collector may transmit the collected actual audio signal to the television via a Wi-Fi (WIreless-FIdelity) connection. The sound collector can also transmit the actual audio signal to the television in a bluetooth connection mode, or transmit the actual audio signal in other wireless data transmission modes, which is not repeated herein.
And step S30, adjusting the original audio signal according to the actual audio signal.
Because the environment of the television is different when the original audio signal is sent out, and the audio signal is affected by the environmental factors when being transmitted indoors or outdoors, the original audio signal cannot meet the requirements of users after being affected by the environment. The television sound adjusting program can adjust the audio parameters in the original audio signals, so that the tone quality and the sound effect of the sound heard by the user are improved, and the requirement of the user for adjusting the audio signals is met.
After the television receives the actual audio signal that the sound collector gathered, can carry out the analysis to actual audio signal, obtain the influence of environment to original audio signal in the propagation to according to actual audio signal's analysis result, adjust original audio signal, solve the television and when sending original audio signal because the tone quality and the impaired problem of efficiency of sound that the surrounding environment difference leads to, promote user's audio and experience.
In this embodiment, the original audio signal is sent outwards to the television, sound collector is in the predetermined scope of television, receive the actual audio signal that forms through environmental factor influence and interference in the scope that the user listened to, and convey actual audio signal to in the television, the television is after receiving actual audio signal, carry out the analysis to actual audio signal, in order to obtain the influence of environment to original audio signal propagation, and then adjust original audio signal, the problem of adjusting audio parameter and using environment mismatch in the current television adjustment sound technique has been solved, improve sound tone quality and the audio that the user listened, promote the user and listen to and watch experience.
Preferably, in this embodiment, the original audio signal emitted by the television set is pink noise. In the process of sending an original audio signal and collecting and processing the original audio signal, the frequency range of sound which can be received by human ears is mainly analyzed, and the frequency range is 20Hz-20 KHz. The frequency component power of the pink noise is mainly distributed in the middle and low frequency bands, and the energy contained in the audio signals of different frequencies in the pink noise is continuously attenuated along with the increase of the frequency, so that the pink noise is generally suitable for performing acoustic testing. When pink noise is adopted as an original audio signal, the receiving frequency range of human ears can be covered, and main energy is distributed in a middle-low frequency band, namely a sound audio band to which the human ears are most sensitive, so that clear and accurate sound information can be obtained after the obtained actual audio signal is processed, and the sound effect heard by a user is better improved.
It should be noted that, because the listening and watching positions of the user actually using the television are usually easy to change, after the television adjusts the original audio signal, if the user changes the listening and watching positions of the television program, correspondingly, the original audio signal can be adjusted again through the sound adjustment function of the television, the original audio signal is sent through the television, the actual audio signal is obtained through the sound collector at the position changed by the user, and the actual audio signal is transmitted to the television, after the television receives the actual audio signal, the original audio signal is adjusted according to the actual audio signal, so that the original audio signal is adjusted again after the user changes the listening position, and the listening experience of the user is improved.
Further, referring to fig. 3, fig. 3 is a flowchart illustrating a second embodiment of the television sound adjusting method according to the present invention, in this embodiment, the step S10, before the step of sending the original audio signal, includes:
step S11, receiving a control signal sent by the controller, and acquiring a function mode of the television according to the control signal;
step S12, when the function mode is sound adjustment, executing the steps of: the original audio signal is emitted.
In this embodiment, the television enters a function mode corresponding to the control signal by receiving the control signal sent by the controller of the television, and when the function mode corresponding to the control signal sent by the controller is a sound adjustment mode, the television enters a sound adjustment mode, and in the sound adjustment mode, the television sends an original audio signal, and the sound acquisition device at the listening position of the user acquires the audio signal and completes the sound adjustment.
When the television operates, the listening position of the user may change continuously, and if the television performs sound adjustment in real time in real life and continuously adjusts the original audio signal according to the listening position of the user, the sound effect heard by the user in the process of normally listening to and watching the television program is easily changed continuously, thereby affecting the listening experience of the user. Therefore, after the television receives the control signal sent by the controller, when the control signal corresponds to the sound adjusting mode, the television enters a sound adjusting function and sends an original audio signal to finish sound adjustment.
Further, referring to fig. 4, fig. 4 is a detailed flowchart of a third embodiment of the television sound adjusting method according to the present invention, in this embodiment, the step S32 of adjusting the original audio signal according to the calibration gain includes:
step S321, taking the actual audio signal as a reference, and acquiring a calibration gain of the original audio signal;
step S322, obtaining equalizer parameters according to the calibration gain;
and step S323, controlling the equalizer to perform frequency response calibration on the original audio signal by using the equalizer parameter.
In this embodiment, after acquiring the actual audio signal acquired by the sound collector, the television performs calculation analysis on the actual audio signal to acquire a change of the actual audio signal relative to the original audio signal, and the original audio signal is affected by the environmental factors in the propagation process to form the actual audio signal, so that the calibration gain of the original audio signal can be obtained according to the actual audio signal, and after the calibration gain is obtained, the corresponding equalizer parameter can be obtained according to the obtained calibration gain. The equalizer is a component which is arranged in the television and can be used for correcting amplitude frequency characteristics and phase frequency characteristics of a transmission channel, and the equalizer can adjust the gain value of each frequency segment signal of an original audio signal to realize the adjustment of tone quality and sound effect. After the equalizer parameters are obtained, the equalizer parameters are input into the equalizer, so that the frequency response calibration of the original audio signal can be realized. The frequency response refers to the frequency response, also called frequency response curve, and in an ideal frequency response curve, in order to ensure undistorted sound, the curve of the frequency response should be flat. After the original audio signal is influenced by environmental factors in the process of propagation, the formed frequency response curve of the actual audio signal is not straight, so that the tone quality and the tone color of the sound are influenced, and the sound is distorted. After the original audio signal is calibrated by the equalizer, the frequency response parameters can be adjusted, so that the frequency response curve is close to an ideal straight state, and the audio signal is prevented from deviating relative to the original audio signal in the transmission process.
The equalizer in the technical scheme of the invention is a GEQ equalizer, namely a graphic equalizer. The graphic equalizer can divide the audio signal of the sound into different frequency bands, and the tone of the sound is controlled by adjusting each frequency band. The audible sound range of human ears is 20Hz-20KHz, and the spatial sense of tone can be adjusted by adjusting the sound signals of 20Hz-60Hz frequency range; 60Hz-100Hz is used as a bass basic sound area, and the sound signal of the 60Hz-100Hz frequency band can be adjusted to adjust the sound sense of soundness; the frequency range of 150Hz-300Hz is adjusted, the strength of sound can be adjusted, and 150Hz-300Hz belongs to the frequency range of male bass fundamental tones; the thickness and strength of the tone can be adjusted by adjusting 300Hz-500Hz, and the frequency band to which the human ear is most sensitive is below 2KHz, so the GEQ equalizer mainly focuses on adjusting the audio signal of the low frequency band when grouping the frequency bands so as to adjust the tone of the sound.
Further, referring to fig. 5, fig. 5 is a flowchart illustrating a fourth embodiment of the television sound adjusting method according to the present invention, in this embodiment, the step S31, taking the actual audio signal as a reference, acquiring a calibration gain of the original audio signal includes:
step S311, sampling the actual audio signal to obtain a digital audio signal;
step S312, obtaining a frequency response parameter of the digital audio signal according to the digital audio signal;
and step S313, calculating to obtain a calibration gain according to the frequency response parameter.
In this embodiment, the actual audio signal collected by the sound collector is an analog audio signal, and after the television obtains the actual audio signal, the actual audio signal needs to be sampled to obtain a digital audio signal of the actual audio signal. Because the frequency range of the actual audio signal is 20Hz-20KHz, according to the Shannon sampling theorem, when the sampling frequency is more than twice of the highest frequency in the signal, the digital audio signal obtained by sampling can completely retain the information in the original analog signal. Therefore, in the technical solution of the present invention, a sampling signal with a sampling frequency of 48KHz may be adopted to completely acquire the sound information contained in the actual audio signal. After the digital audio signal is obtained, the digital audio signal is analyzed and operated, a frequency response curve of the audio signal can be obtained, a frequency response parameter is obtained through calculation according to the frequency response curve of the digital audio signal containing all information of the actual audio signal, and calibration gain is further obtained.
Further, referring to fig. 6, fig. 6 is a detailed flowchart of a television sound adjusting method according to a fourth embodiment of the present invention, in this embodiment, the step S312 of obtaining the frequency response parameter of the digital audio signal according to the digital audio signal includes:
step S3121, performing fast fourier transform on the digital audio signal to generate a plurality of frequency bands and frequency response parameters corresponding to each frequency band, where the frequency bands have equal bandwidths.
In this embodiment, the digital audio signal is processed by a Fast Fourier Transform (FFT) algorithm to obtain a plurality of frequency bands with equal bandwidths. In the technical scheme of the scheme, 1024 frequency bands with the frequency of 20Hz-20480Hz and the bandwidth of 20Hz can be obtained by adopting 1024-point FFT algorithm. Because the most sensitive sound frequency response range of human ears is below 2KHz, 1024 frequency bands are divided into groups in an unequal mode, and each group of frequency bands are integrated and calculated to obtain the frequency response parameters of the digital audio signals. Of course, multiple frequency bands may be grouped in an equal grouping manner.
Further, referring to fig. 7, fig. 7 is a detailed flowchart of a fourth embodiment of the television sound adjusting method according to the present invention, in this embodiment, the step S313 of calculating a calibration gain according to the frequency response parameter includes:
step S3131, grouping the plurality of frequency bands, and calculating an average sound pressure of each group of frequency bands according to the frequency response parameters;
step S3132, determining a reference sound pressure according to the average sound pressure of each group of frequency bands;
step S3133, obtaining a calibration gain of each group of frequency bands according to the reference sound pressure.
In this embodiment, a plurality of frequency bands obtained through the FFT algorithm are grouped according to frequency bands, and since the audio signal of the low frequency band is mainly adjusted when adjusting the sound that can be heard by the human ear, the frequency bands are grouped with emphasis on the low frequency band, that is, the frequency band at 2KHz is taken as the main grouping basis. The television calculates the average sound pressure of each group of frequency bands according to the frequency response parameters included in the grouped frequency bands, and determines the reference sound pressure according to the average sound pressure of each group of frequency bands after calculating the average sound pressure of each frequency band. The reference sound pressure can be a group of frequency bands which are most sensitive to human ears and are selected from all groups of frequency bands, and the average sound pressure obtained by calculating the group of frequency bands is used as the reference sound pressure; the reference sound pressure may be an average value of average sound pressures of the respective groups of frequency bands, or an average value of average sound pressures of the respective groups of frequency bands calculated by a weighting calculation method based on the number of frequency bands included in the respective groups of frequency bands. After the reference sound pressure is determined, the reference sound pressure is compared with the average sound pressure calculated by each frequency band to obtain the calibration gain of each group of frequency bands, and the adjustment of the audio signal is realized by adjusting an equalizer.
Further, in the present embodiment, the frequency response parameter includes a sound pressure of each frequency band in each set of frequency bands; step S3131, calculating an average sound pressure of each group of frequency bands according to the frequency response parameter, includes:
the average sound pressure for each set of frequency bands is calculated using the following formula:
SPLn＝10lg[10^(SPL1/10)+10^(SPL2/10)+10^(SPL3/10)+10^(SPL4/10)+...+10^(SPLm/10)]
wherein, SPLn represents the average sound pressure of each frequency band in the nth group; SPLm represents the sound pressure of the mth frequency band in the group, respectively; n and m are each an integer greater than 0.
For example, since the equalizer used is a GEQ equalizer of ten segments of packets, 1024 frequency bands in the frequency range of 20Hz-20480Hz are divided into ten groups, and the packets are as follows: 20Hz-40Hz, 40Hz-80Hz, 80Hz-160Hz, 160Hz-320Hz, 320Hz-640Hz, 640Hz-1280Hz, 1280Hz-2560Hz, 2560Hz-5120Hz, 5120Hz-10240Hz, 10240Hz-20480 Hz. When n is 10, SPLn represents the average sound pressure of the tenth group frequency band, and in the tenth group, m is 512, that is, SPLm represents the sound pressure of the 512 th frequency band, the bandwidth of each frequency band is 20Hz, and the average sound pressure of each group of frequency bands can be calculated according to the average sound pressure formula.
Taking the average sound pressure calculation of the frequency band of 80Hz-160Hz as an example, the average sound pressure calculation formula is:
SPLn＝10lg[10^(SPL1/10)+10^(SPL2/10)+10^(SPL3/10)+10^(SPL4/10)]
wherein, SPLn is the average sound pressure of the frequency band of 80Hz-160Hz, SPL1 is the sound pressure of the frequency band of 80Hz-100Hz, SPL2 is the sound pressure of the frequency band of 100Hz-120Hz, SPL3 is the sound pressure of the frequency band of 120Hz-140Hz, and SPL4 is the sound pressure of the frequency band of 140Hz-160 Hz.
After the average sound pressure of ten groups of frequency bands is obtained through calculation, because the frequency response range of the sound which is most sensitive to human ears is below 2KHz, the average sound pressure of the frequency band of 640Hz-1280Hz is taken as the preset reference sound pressure SPLr, the average sound pressure of other groups of frequency bands is taken as the reference sound pressure SPLr to obtain the compensation frequency spectrum of the average sound pressure of other groups of frequency bands relative to the reference sound pressure, the parameters of the equalizer are obtained through calculation according to the compensation frequency spectrum, the frequency response parameters of the original audio signals can be adjusted through adjusting the equalizer, the sound emitted by the television is prevented from being distorted in the transmission process, and the sound color and the sound quality of the television are improved.
Further, referring to fig. 8, fig. 8 is a flowchart illustrating a fifth embodiment of the television sound adjusting method according to the present invention, in this embodiment, the step S30 of adjusting the original audio signal according to the actual audio signal includes:
step S40, comparing the actual audio signal with the original audio signal to obtain a comparison result;
step S50, obtaining the calibration gain of the original audio signal according to the comparison result;
and step S60, adjusting the original audio signal according to the calibration gain.
In this embodiment, after the television acquires the actual audio signal, the television compares the actual audio signal with the original audio signal to obtain a deviation of the original audio signal caused by the influence of the environmental factors in the propagation process, calculates a calibration gain of the original audio signal according to the comparison result, and adjusts the original audio signal according to the calibration gain, so that the actual audio signal can keep the timbre and the tone quality of the sound, and the distortion of the sound is avoided.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, on which a television sound adjustment program is stored, where the storage medium may be the Memory 1005 in the terminal in fig. 1, and may also be at least one of a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, and an optical disk, and the computer-readable storage medium includes instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, or a television, etc.) having a processor to execute the method according to the embodiments of the present invention.
It is to be understood that throughout the description of the present specification, reference to the term "one embodiment", "another embodiment", "other embodiments", or "first through nth embodiments", etc., is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A television sound adjusting method is characterized by comprising the following steps:
sending out an original audio signal;
receiving an actual audio signal sent by a sound collector, wherein the actual audio signal is an audio signal collected by the sound collector within a preset range of the television;
acquiring the calibration gain of the original audio signal by taking the actual audio signal as a reference;
obtaining equalizer parameters according to the calibration gain;
controlling the equalizer to perform frequency response calibration on the original audio signal by using the equalizer parameter, wherein the equalizer mainly focuses on adjusting the original audio signal of a low frequency band;
wherein the step of obtaining the calibration gain of the original audio signal with the actual audio signal as a reference comprises:
sampling the actual audio signal to obtain a digital audio signal;
performing fast Fourier transform on the digital audio signal to generate a plurality of frequency bands and frequency response parameters corresponding to each frequency band, wherein the bandwidths of the frequency bands are equal;
grouping the plurality of frequency bands, and calculating the average sound pressure of each group of frequency bands according to the frequency response parameters;
according to the average sound pressure of each group of frequency bands, selecting the average sound pressure of a group of frequency bands to which human ears are most sensitive as preset reference sound pressure;
comparing the reference sound pressure with the average sound pressure of each group of frequency bands to obtain the calibration gain of each group of frequency bands;
the frequency response parameter comprises a sound pressure for each frequency band in the respective set of frequency bands; the step of calculating the average sound pressure of each group of frequency bands according to the frequency response parameters comprises:
the average sound pressure for each set of frequency bands is calculated using the following formula:
SPLn＝10lg[10^(SPL1/10)+10^(SPL2/10)+10^(SPL3/10)+10^(SPL4/10)+...+10^(SPLm/10)]；
wherein, SPLn represents the average sound pressure of each frequency band in the nth group; SPLm represents the sound pressure of the mth frequency band in the group, respectively; n and m are each an integer greater than 0.
2. The television sound adjustment method of claim 1, wherein the step of emitting the original audio signal is preceded by:
receiving a control signal sent by a controller, and acquiring a function mode of the television according to the control signal;
when the function mode is sound adjustment, executing the following steps: the original audio signal is emitted.
3. The method for adjusting sound of a television set according to claim 1, wherein the step of obtaining the calibrated gain of the original audio signal with reference to the actual audio signal comprises:
comparing the actual audio signal with the original audio signal to obtain a comparison result;
and acquiring the calibration gain of the original audio signal according to the comparison result.
4. A television set, characterized in that the television set comprises: a memory, a processor, and a television sound adjustment program stored on the memory and executable on the processor, wherein: the television sound adjustment program when executed by the processor implements the steps of the television sound adjustment method of any one of claims 1 to 3.
5. A computer-readable storage medium, having a television sound adjustment program stored thereon, which when executed by a processor implements the steps of the television sound adjustment method of any one of claims 1 to 3.
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| CN201811096965.XA CN109274909B (en) | 2018-09-19 | 2018-09-19 | Television sound adjusting method, television and storage medium |
| PCT/CN2019/094231 WO2020057227A1 (en) | 2018-09-19 | 2019-07-01 | Television sound adjustment method, television set, and storage medium |
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| CN201811096965.XA CN109274909B (en) | 2018-09-19 | 2018-09-19 | Television sound adjusting method, television and storage medium |
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| CN109274909B (en) * | 2018-09-19 | 2021-04-16 | 深圳创维－Rgb电子有限公司 | Television sound adjusting method, television and storage medium |
| CN110933559B (en) * | 2019-11-28 | 2021-08-31 | 深圳创维－Rgb电子有限公司 | Intelligent sound box sound effect self-adaptive adjusting method and system and storage medium |
| CN111918123A (en) * | 2020-08-07 | 2020-11-10 | 冠捷显示科技（厦门）有限公司 | Method for self-adaptively adjusting television sound effect according to user environment and television system thereof |
| CN112165670B (en) * | 2020-09-28 | 2022-06-03 | 深圳创维－Rgb电子有限公司 | Dynamic adjusting method and device for sound effect frequency response parameters, intelligent terminal and storage medium |
| CN113849149A (en) * | 2020-10-19 | 2021-12-28 | 广东朝歌智慧互联科技有限公司 | Equal loudness volume adjusting method and device applied to Bluetooth terminal and electronic equipment |
| CN112289331B (en) * | 2020-10-20 | 2023-01-31 | 一汽奔腾轿车有限公司 | Entertainment system sound effect improving method based on software algorithm |
| CN112492450B (en) * | 2020-11-25 | 2023-09-19 | 努比亚技术有限公司 | Sound parameter regulation and control method, device and computer readable storage medium |
| CN113655983B (en) * | 2021-07-27 | 2023-09-08 | 深圳市冠旭电子股份有限公司 | Audio playing method and device, audio playing equipment and readable storage medium |
| CN113709629A (en) * | 2021-08-26 | 2021-11-26 | 深圳创维－Rgb电子有限公司 | Frequency response parameter adjusting method, device, equipment and storage medium |
| CN114071220B (en) * | 2021-11-04 | 2024-01-19 | 深圳Tcl新技术有限公司 | Sound effect adjusting method and device, storage medium and electronic equipment |
| CN116320905A (en) * | 2021-12-10 | 2023-06-23 | 北京荣耀终端有限公司 | Calibration method for frequency response consistency and electronic equipment |
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| JP4580409B2 (en) * | 2007-06-11 | 2010-11-10 | 富士通株式会社 | Volume control apparatus and method |
| CN101600132B (en) * | 2009-06-05 | 2014-11-19 | 北京中星微电子有限公司 | Method and device for adjusting audio file play effect on portable handheld device |
| CN206743522U (en) * | 2017-01-19 | 2017-12-12 | 匡留生 | Audio adjusts terminal and intelligence customization sound system |
| CN109274909B (en) * | 2018-09-19 | 2021-04-16 | 深圳创维－Rgb电子有限公司 | Television sound adjusting method, television and storage medium |
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| CN109274909A (en) | 2019-01-25 |
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