CN114697804A

CN114697804A - Audio equalization method and device, intelligent terminal and computer readable storage medium

Info

Publication number: CN114697804A
Application number: CN202011582384.4A
Authority: CN
Inventors: 秦宇; 谢仁礼
Original assignee: Shenzhen TCL Digital Technology Co Ltd
Current assignee: Shenzhen TCL Digital Technology Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-01

Abstract

The invention discloses an audio equalization method, an audio equalization device, an intelligent terminal and a computer readable storage medium, wherein the audio equalization method comprises the following steps: acquiring a standard equalizer curve and a standard transfer function of target equipment; obtaining a transfer function to be calibrated of the target equipment; calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function to obtain a target transfer function; and performing audio equalization on the target equipment based on the target transfer function. The audio equalization method provided by the scheme of the invention can offset the uncertainty brought by different measuring equipment through calibration in the process of measuring the transfer function of a room, and is favorable for accurately adjusting the equalizer.

Description

Audio equalization method and device, intelligent terminal and computer readable storage medium

Technical Field

The present invention relates to the field of audio processing technologies, and in particular, to an audio equalization method and apparatus, an intelligent terminal, and a computer-readable storage medium.

Background

With the development of science and technology, people have higher and higher requirements on audio output equipment, such as television, sound and other audio output equipment, and people hope to have better sound effects. When audio output equipment such as a television and a sound system plays in a reverberant room, sound waves reach the position of a user through direct waves and reflection in the room and are listened by the user. Because of the reflected waves, the sound heard by the user is generally distorted compared with the original audio emitted by the audio output device, so that the sound effect cannot meet the user's requirements. Standing waves may even be formed by multiple reflections of the sound waves and superposition at the user listening position, seriously affecting the user experience.

In the prior art, an equalizer (eq, equalizer) is provided for audio output equipment such as a television and a sound box, and the influence of a room system on television transmitted sound waves can be estimated by measuring room parameters, so that standing wave parameters are estimated, the equalizer is adjusted to suppress standing waves, and user experience is improved. The problem in the prior art is that when a user measures a transfer function of a room, a receiving device used by the user is uncertain, and different receiving devices may cause the measured transfer function to be different, that is, cause the transfer function to be inaccurate to measure, thereby affecting the adjustment of an equalizer and being not beneficial to providing a better sound effect for the user.

Thus, there is still a need for improvement and development of the prior art.

Disclosure of Invention

The invention mainly aims to provide an audio equalization method, an audio equalization device, an intelligent terminal and a computer readable storage medium, and aims to solve the problems that when a user measures a transfer function of a room, receiving equipment used by the user is uncertain, so that the measurement of the transfer function is inaccurate, the adjustment of an equalizer is influenced, and better sound effect is not provided for the user.

In order to achieve the above object, a first aspect of the present invention provides an audio equalization method, wherein the method comprises:

acquiring a standard equalizer curve and a standard transfer function of target equipment;

obtaining a transfer function to be calibrated of the target equipment;

calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function to obtain a target transfer function;

and performing audio equalization on the target equipment based on the target transfer function.

Optionally, the obtaining a standard equalizer curve and a standard transfer function of the target device includes:

testing the target device in an anechoic chamber;

and acquiring an equalizer curve and a transfer function of the audio signal of the target device in the anechoic chamber as the standard equalizer curve and the standard transfer function.

Optionally, the obtaining a transfer function to be calibrated of the target device includes:

controlling the target equipment to emit test sound waves in the area to be detected;

receiving the test sound wave by a receiver as a received sound wave;

and calculating and acquiring a transfer function to be calibrated of the target equipment based on the received sound wave.

Optionally, the calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function to obtain the target transfer function includes:

converting the received sound waves into audio signals as test audio signals;

performing energy calibration based on the test audio signal and the standard equalizer curve to obtain a calibration audio signal;

and calibrating the amplitude of the transfer function to be calibrated based on the calibration audio signal and the standard transfer function to obtain a target transfer function.

Optionally, the target device is a television.

Optionally, the receiver is a television remote controller or a mobile intelligent device.

A second aspect of the present invention provides an audio equalization apparatus, wherein the apparatus comprises:

the standard data acquisition module is used for acquiring a standard equalizer curve and a standard transfer function of the target equipment;

a transfer function to be calibrated acquisition module, configured to acquire a transfer function to be calibrated of the target device;

the calibration module is used for calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function to obtain a target transfer function;

and the equalizing module is used for carrying out audio equalization on the target equipment based on the target transfer function.

Optionally, the standard data obtaining module includes:

the testing unit is used for testing the target equipment in the anechoic chamber;

and the data acquisition unit is used for acquiring the equalizer curve and the transfer function of the audio signal of the target device in the anechoic chamber as the standard equalizer curve and the standard transfer function.

A third aspect of the present invention provides an intelligent terminal, which includes a memory, a processor, and an audio equalization program stored on the memory and operable on the processor, wherein the audio equalization program, when executed by the processor, implements any one of the steps of the audio equalization method.

A fourth aspect of the present invention provides a computer-readable storage medium having stored thereon an audio equalization program, which when executed by a processor, implements the steps of any of the audio equalization methods.

Therefore, the scheme of the invention obtains the standard equalizer curve and the standard transfer function of the target equipment; obtaining a transfer function to be calibrated of the target equipment; calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function to obtain a target transfer function; and performing audio equalization on the target equipment based on the target transfer function. The audio equalization method provided by the scheme of the invention can calibrate the transfer function to be calibrated obtained by measurement based on the standard equalizer curve and the standard transfer function to obtain the target transfer function. Therefore, even if the user uses different devices to measure and obtain different transfer functions in the process of obtaining the transfer functions of the room, the uncertainty caused by the different devices can be offset through calibration, the equalizer can be accurately adjusted, the better sound effect can be provided for the user, and the user experience is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic flowchart of an audio equalization method according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating the step S100 in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a detailed process of step S200 in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating the step S300 in FIG. 1 according to an embodiment of the present invention;

fig. 5 is a schematic diagram of signal measurement of a television set in an anechoic chamber according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a television set for signal measurement in a reverberation room through a microphone according to an embodiment of the present invention;

fig. 7 is a schematic diagram of signal measurement of a tv set in a reverberation room by a user's mobile phone according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an energy alignment provided by an embodiment of the present invention;

fig. 9 is a schematic flowchart of audio compensation for a television according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an audio equalization apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of the standard data obtaining module 910 in fig. 10 according to an embodiment of the present invention;

fig. 12 is a schematic block diagram of an internal structure of an intelligent terminal according to an embodiment of the present invention.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when …" or "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted depending on the context to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

With the continuous development of scientific technology, people have increasingly deep research and understanding on audio output devices, and the requirements on the audio output devices are also higher and higher. Especially, with the wide application of the television, the audio output effect of the television is also gradually emphasized. In general, a user uses an audio output device such as a television in a general room such as a bedroom or a living room, which belongs to a reverberation room in which sound has an echo effect. When the television is played in a reverberation room, sound waves reach the position of a user in the room through direct waves and reflections and are listened to by the user. Because the reflected wave exists, the sound listened to by the user is generally distorted compared with the original audio frequency transmitted by the television, and in extreme conditions, such as a small room and a small room reflection surface absorption coefficient, the sound wave is reflected for multiple times and is superposed at the listening position of the user to form standing waves, namely, the energy of certain frequencies is led to be superposed in the space to form frequency point sound which is too strong, so that the listening feeling of the user is influenced. There are various general methods for preventing standing waves in a room, such as arranging sound absorbing materials in the room, and changing the reflecting surface of the wall of the room to suppress the standing waves; the arrangement position of the horn is changed to restrain standing waves and the like. These methods of improving sound effects by changing the physical configuration of the room and changing the location of the device are not suitable for the average television user.

In the prior art, in order to enable a common television user to obtain a better sound effect, an equalizer is usually arranged for the television, and when the television is used by the user, the influence of a room system on television emission sound waves can be estimated by measuring room parameters, so that standing wave parameters are calculated, the equalizer is adjusted to inhibit standing waves, and the user experience is improved. The method only needs to measure parameters such as a transfer function from the television to the user position in the room, and the equalizer can be adjusted through software in the television, so that standing waves are offset for the user in a self-adaptive mode, and user experience is improved. The problem in the prior art is that when a user measures the transfer function of a room, the receiving device used by the user is uncertain, and different receiving devices may cause different measured transfer functions, that is, the transfer function measurement is inaccurate, so that the adjustment of an equalizer is affected, and the better sound effect is not provided for the user. Therefore, there is a need to provide a better audio equalization method for users.

In order to solve the problems in the prior art, embodiments of the present invention provide an audio equalization method, in an embodiment of the present invention, a standard equalizer curve and a standard transfer function of a target device are obtained; obtaining a transfer function to be calibrated of the target equipment; calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function to obtain a target transfer function; and performing audio equalization on the target device based on the target transfer function. The audio equalization method provided by the scheme of the invention can calibrate the transfer function to be calibrated obtained by measurement based on the standard equalizer curve and the standard transfer function to obtain the target transfer function. Therefore, even if the user uses different devices to measure and obtain different transfer functions in the process of obtaining the transfer functions of the room, the uncertainty caused by the different devices can be offset through calibration, the equalizer can be accurately adjusted, the better sound effect can be provided for the user, and the user experience is improved.

Exemplary method

As shown in fig. 1, an embodiment of the present invention provides an audio equalization method, which includes the following steps:

step S100, a standard equalizer curve and a standard transfer function of the target device are obtained.

The target device is a device needing audio equalization. In this embodiment, the equalizer adjustment is performed on the television used by the user, and audio equalization is performed according to the adjusted equalizer, so that the target device is the television. In practical use, the target device may also be other audio output devices that need audio equalization, such as a sound box, and is not limited specifically herein. The standard equalizer curve and the standard transfer function are the equalizer curve and the transfer function of the target device in an environment where no reflection of sound waves exists.

Step S200, obtaining a transfer function to be calibrated of the target equipment.

Step S300, calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function, and obtaining a target transfer function.

The transfer function to be calibrated of the target device is a transfer function measured by a user when the target device (such as a television) is in a room actually used by the user. Specifically, during the measurement process, different measurement devices (such as different types of mobile phones) may be used to measure the transfer function of the target device. And different measuring equipment's microphone frequency response is different, consequently can cause the transfer function of the target device who obtains to measure to have the difference, if directly carry out audio equalization to target device according to this transfer function who obtains of measuring, can make the equilibrium effect reduce, be unfavorable for providing better sound for the user. In the embodiment of the invention, the transfer function to be calibrated can be calibrated further based on the obtained standard equalizer curve and the standard transfer function, so that the uncertainty caused by using different measuring equipment by a user is eliminated, a more accurate target transfer function is obtained, and better audio equalization can be performed on the target equipment.

And step S400, carrying out audio equalization on the target equipment based on the target transfer function.

Specifically, in this embodiment, as shown in fig. 2, the step S100 includes:

and step S101, testing the target equipment in an anechoic chamber.

Step S102, obtaining an equalizer curve and a transfer function of the audio signal of the target device in the anechoic chamber as the standard equalizer curve and the standard transfer function.

Specifically, in this embodiment, a television is specifically described as a target device. The standard equalizer curve and the standard transfer function are the equalizer curve and the transfer function of the television under the environment without sound wave reflection. In order to obtain the standard equalizer curve and the standard transfer function, a television set may be tested in an anechoic chamber to obtain the standard equalizer curve and the standard transfer function of the television set. The anechoic room is a special laboratory for acoustic testing, and particularly refers to a room without acoustic wave reflection. Sound-absorbing materials with good sound absorption performance are laid on the walls of the sound-absorbing chamber, so that sound waves cannot be reflected indoors, and the sound-absorbing chamber can be used for testing audio output equipment such as a sound box, a loudspeaker, a television and the like.

In this embodiment, the test may be performed in an anechoic room before the television leaves a factory, and the standard equalizer curve and the standard transfer function obtained through the test are stored in the television, so that the user can call the standard equalizer curve and the standard transfer function conveniently. Certainly, the user may also obtain the standard equalizer curve and the standard transfer function in other manners, for example, download the standard equalizer curve and the standard transfer function corresponding to the unique serial number of the television from a cloud server provided by a manufacturer, or obtain the standard equalizer curve and the standard transfer function by self measurement, which is not limited specifically herein.

Specifically, in this embodiment, as shown in fig. 3, the step S200 includes:

step S201, controlling the target equipment to emit test sound waves in the area to be detected.

Step S202, receiving the test sound wave through a receiver as a received sound wave.

Step S203, calculating and acquiring a transfer function to be calibrated of the target device based on the received sound wave.

The area to be detected is an area where the user specifically uses the television, such as a living room, a bedroom and other rooms. The receiver is placed at a seat where a user watches the television in the normal use process, so that a better measurement effect of a transfer function of a specific position of the user is achieved, and a better audio balance effect is achieved.

Optionally, the receiver may be a television remote controller or a mobile smart device, such as a smart phone. When the receiver is a television remote controller, the receiver can be a remote controller with a far-field pickup function and matched with the target equipment (television), so that a user can conveniently test the transfer function to be calibrated of the television through the remote controller while adjusting and controlling the television by using the remote controller, and the operation of the user is facilitated.

Specifically, in this embodiment, as shown in fig. 4, the step S300 includes:

step S301, converting the received sound wave into an audio signal as a test audio signal.

Step S302, energy calibration is carried out based on the test audio signal and the standard equalizer curve, and a calibration audio signal is obtained.

Step S303, calibrating the amplitude of the transfer function to be calibrated based on the calibration audio signal and the standard transfer function, and obtaining a target transfer function.

Specifically, the received sound wave is a test sound wave transmitted by the television and received by the receiver, and in this embodiment, the test sound wave transmitted by the television and received by the user through the mobile phone in the room is specifically used. Since the received sound waves obtained by users using different receivers (such as different models of mobile phones) during the test process may have differences, uncertainties are introduced in the measurement process of the transfer function. Therefore, in this embodiment, the received sound wave is converted into an audio signal, the obtained audio signal is subjected to energy alignment with a standard equalizer curve, the amplitude of the transfer function to be calibrated is adjusted based on the aligned audio signal, calibration is achieved, and a target transfer function is obtained. The target transfer function is a transfer function of the corresponding television in the room after uncertainty caused by different receivers is eliminated, and can be directly used for adjusting an equalizer to realize audio equalization so as to provide better television sound effect for users.

Specifically, in this embodiment, a process of specifically testing a sound box of a television is taken as an example to specifically describe the scheme. Fig. 5 is a schematic diagram of signal measurement in an anechoic chamber of a television set according to an embodiment of the present invention, in fig. 5, measurement is performed in the anechoic chamber, x is a transmission signal emitted by the television set, Hs is a transfer function of a television speaker, w0 is an actual channel transfer function in the anechoic chamber, and H0 is a transfer function of a microphone of a target microphone, wherein the target microphone is a standard microphone for performing transfer function test. y is the received signal, and in the anechoic chamber, y is x Hs w 0H 0. Fig. 6 is a schematic diagram of a television set performing signal measurement in a reverberation room through a standard microphone according to an embodiment of the present invention, where the reverberation room can be a room in which a user uses a television, and w1 is an actual channel transfer function corresponding to the reverberation room, and at this time, the measurement is performed with the standard microphone, so that a room received signal obtained by measurement is a correct received signal, and thus a correct room transfer function can be obtained. Fig. 7 is a schematic diagram of a television set according to an embodiment of the present invention, which measures signals in a reverberation room through a user's mobile phone, where H1 is a transfer function of a microphone of the user's mobile phone, and it can be seen that, due to a difference between H1 and H0, a measured room received signal is shifted, so that the calculation of the transfer function of the room is affected, and thus audio equalization of the television set is affected. Fig. 8 is a schematic diagram of energy alignment according to an embodiment of the present invention, and as shown in fig. 8, at this time, inverse fast fourier transform may be performed on a standard received signal and an uncompensated room received signal, then energy alignment is performed, and then fast fourier transform is performed on the aligned room received signal to obtain a compensated correct room received signal, so as to implement compensation, thereby eliminating uncertainty caused by a transfer function of a microphone of a mobile phone, and calculating a correct room transfer function. In fig. 5, 6 and 7, all data are represented in the frequency domain, and the horizontal line at the curve of the received signal in fig. 6 and 7 is the corresponding standard received signal, which is only used to illustrate the relationship between the room received signal and the standard received signal. Fig. 9 is a schematic partial flowchart of audio compensation for a television according to an embodiment of the present invention, where a portion inside a dashed line box in fig. 9 is an offline processing portion, a portion outside the dashed line box is an online processing portion, and Conv represents polynomial multiplication. Wherein s is a signal of the test room reverberation, and s' is a signal which is actually received by the receiver after the signal s passes through the loudspeaker, the room reverberation and the microphone; x is the original audio signal of the television, and x' is the signal compensated by eq. w is the room transfer unit impulse response (time domain), Hs is the transfer function of the tv set horn, Hm is the transfer function of the receiver microphone, rtf is the transfer function of the complete path from horn to microphone, rtf is the frequency domain form of w when neglecting the horn and microphone transfer functions and can be approximately seen as the room transfer function. cf is the corresponding compensation eq and theoretically cf rtf is a flat frequency response. Specifically, after the test signal is transmitted, a room transfer function is calculated according to a received signal of a receiver (such as a mobile phone), a compensation function is calculated according to the room transfer function and a standard eq, the amplitude of the transfer function measured by a user through the receiver is corrected by using a known standard curve, so that a target transfer function of the room after compensation is obtained, and further, an equalizer of the television can be adjusted according to the target transfer function to perform audio equalization.

Exemplary device

As shown in fig. 10, corresponding to the audio equalizing method, an embodiment of the present invention further provides an audio equalizing apparatus, where the audio equalizing apparatus includes:

and a standard data obtaining module 910, configured to obtain a standard equalizer curve and a standard transfer function of the target device.

A to-be-calibrated transfer function obtaining module 920, configured to obtain a to-be-calibrated transfer function of the target device.

A calibration module 930, configured to calibrate the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function, so as to obtain a target transfer function.

The transfer function to be calibrated of the target device is a transfer function measured by a user when the target device (such as a television) is in a room actually used by the user. Specifically, during the measurement process, different measurement devices (such as different types of mobile phones) may be used to measure the transfer function of the target device. And the microphone frequency response of different measuring equipment is different, consequently can cause the transfer function of the target equipment that the measurement obtained to have the difference, if directly carry out audio frequency equalization to target equipment according to the transfer function that this measurement obtained, can make the balanced effect reduce, be unfavorable for providing better sound for the user. In the embodiment of the invention, the transfer function to be calibrated can be calibrated further based on the obtained standard equalizer curve and the standard transfer function, so that the uncertainty caused by using different measuring equipment by a user is eliminated, a more accurate target transfer function is obtained, and better audio equalization can be performed on the target equipment.

An equalization module 940 for performing audio equalization on the target device based on the target transfer function.

As can be seen from the above, in the solution of the present invention, the standard data obtaining module 910 obtains the standard equalizer curve and the standard transfer function of the target device; obtaining a transfer function to be calibrated of the target device through a transfer function to be calibrated obtaining module 920; calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function by a calibration module 930 to obtain a target transfer function; audio equalization is performed on the target device based on the target transfer function by equalization module 940. The audio equalization device provided by the scheme of the invention can calibrate the transfer function to be calibrated obtained by measurement based on the standard equalizer curve and the standard transfer function to obtain the target transfer function. Therefore, even if the user uses different devices to measure and obtain different transfer functions in the process of obtaining the transfer functions of the room, the uncertainty caused by the different devices can be offset through calibration, the equalizer can be accurately adjusted, the better sound effect can be provided for the user, and the user experience is improved.

Specifically, in this embodiment, as shown in fig. 11, the standard data obtaining module 910 includes:

a test unit 911 for testing the target device in an anechoic chamber.

A data obtaining unit 912, configured to obtain an equalizer curve and a transfer function of the audio signal of the target device in the anechoic chamber as the standard equalizer curve and the standard transfer function.

Optionally, the to-be-calibrated transfer function obtaining module 920 is specifically configured to: controlling the target equipment to emit test sound waves in the area to be detected; receiving the test sound wave by a receiver as a received sound wave; and calculating and acquiring a transfer function to be calibrated of the target equipment based on the received sound wave.

Specifically, the calibration module 930 is specifically configured to: converting the received sound waves into audio signals as test audio signals; performing energy calibration based on the test audio signal and the standard equalizer curve to obtain a calibration audio signal; and calibrating the amplitude of the transfer function to be calibrated based on the calibration audio signal and the standard transfer function to obtain a target transfer function.

Based on the embodiment, the invention also provides an intelligent terminal, and a schematic block diagram of the intelligent terminal can be shown in fig. 12. The intelligent terminal comprises a processor, a memory, a network interface and a display screen which are connected through a system bus. Wherein, the processor of the intelligent terminal is used for providing calculation and control capability. The memory of the intelligent terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and an audio equalization program. The internal memory provides an environment for the operating system and the audio equalization program to run in the non-volatile storage medium. The network interface of the intelligent terminal is used for being connected and communicated with an external terminal through a network. The audio equalization program when executed by a processor implements the steps of any of the audio equalization methods. The display screen of the intelligent terminal can be a liquid crystal display screen or an electronic ink display screen.

It will be understood by those skilled in the art that the block diagram of fig. 12 is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation to the intelligent terminal to which the solution of the present invention is applied, and a specific intelligent terminal may include more or less components than those shown in the figure, or combine some components, or have different arrangements of components.

In one embodiment, a smart terminal is provided that includes a memory, a processor, and an audio equalization program stored on the memory and executable on the processor, the audio equalization program when executed by the processor performs the following operational instructions:

obtaining a transfer function to be calibrated of the target equipment;

The embodiment of the present invention further provides a computer-readable storage medium, where an audio equalization program is stored on the computer-readable storage medium, and when the audio equalization program is executed by a processor, the audio equalization program implements the steps of any one of the audio equalization methods provided in the embodiments of the present invention.

It should be understood that, the sequence numbers of the steps in the embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the functional units and modules are described as examples, and in practical applications, the functions may be distributed as required by different functional units and modules, that is, the internal structure of the apparatus may be divided into different functional units or modules to implement all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in a certain embodiment.

Those of ordinary skill in the art would appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described apparatus/terminal device embodiments are merely illustrative, and for example, the division of the modules or units is only one type of logical function division, and may be implemented by another division manner in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium and used for instructing related hardware, and when the computer program is executed by a processor, the steps of the embodiments of the method may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the contents contained in the computer-readable storage medium can be increased or decreased as appropriate according to the requirements of legislation and patent practice in the jurisdiction.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims

1. A method for audio equalization, the method comprising:

obtaining a transfer function to be calibrated of the target equipment;

2. The audio equalization method of claim 1, wherein the obtaining of the standard equalizer curve and the standard transfer function of the target device comprises:

testing the target device in an anechoic chamber;

3. The audio equalization method of claim 2, wherein the obtaining the transfer function to be calibrated of the target device comprises:

receiving the test sound wave through a receiver as a received sound wave;

4. The audio equalization method of claim 3, wherein the calibrating the transfer function to be calibrated based on the standard equalizer curve and the standard transfer function to obtain a target transfer function comprises:

converting the received sound waves into audio signals as test audio signals;

5. The audio equalization method of claim 3 or 4, wherein the target device is a television.

6. The audio equalization method of claim 5, wherein the receiver is a television remote control or a mobile smart device.

7. An audio equalization apparatus, characterized in that the apparatus comprises:

8. The audio equalization apparatus of claim 7, wherein the standard data acquisition module comprises:

9. An intelligent terminal, characterized in that the intelligent terminal comprises a memory, a processor and an audio equalization program stored on the memory and executable on the processor, the audio equalization program, when executed by the processor, implementing the steps of the audio equalization method according to any one of claims 1-6.

10. A computer-readable storage medium, having stored thereon an audio equalization program, which when executed by a processor implements the steps of the audio equalization method of any of claims 1-6.