CN110109644B - Method, device and system for determining and processing equalization parameters of electronic equipment - Google Patents
Method, device and system for determining and processing equalization parameters of electronic equipment Download PDFInfo
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- CN110109644B CN110109644B CN201910283884.9A CN201910283884A CN110109644B CN 110109644 B CN110109644 B CN 110109644B CN 201910283884 A CN201910283884 A CN 201910283884A CN 110109644 B CN110109644 B CN 110109644B
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- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
Abstract
The embodiment of the invention provides a method, a device and a system for determining and processing an equalization parameter of electronic equipment, wherein the method comprises the following steps: sending an input sweep frequency signal to the electronic equipment; receiving an output frequency sweep signal output by audio output equipment of the electronic equipment according to the input frequency sweep signal; comparing and analyzing the output frequency sweep signal and the input frequency sweep signal to obtain frequency response information of the audio output equipment; determining an equalization parameter of the electronic equipment according to the frequency response information of the audio output equipment; and sending the equalization parameters to the electronic equipment so that the electronic equipment stores the equalization parameters. The method can realize the automatic equalization parameter customization of the electronic equipment, and the obtained equalization parameters can effectively perform frequency domain equalization compensation on the electronic equipment, thereby ensuring the good presentation effect of the audio output equipment of the electronic equipment.
Description
Technical Field
The embodiment of the invention relates to computer technology, in particular to a method, a device and a system for determining and processing an equalization parameter of electronic equipment.
Background
The flat-panel television is widely applied to the fields of home life, conference office, advertisement propaganda, vehicle-mounted entertainment and the like, and the sound system of the flat-panel television is directly related to the listening feeling of a user. A good sound system should have a relatively flat frequency response curve, but due to the material, structure and electroacoustic characteristics of the television speaker, the speaker will have a natural resonant frequency in practical situations, and thus it is difficult to have a flat frequency response curve. Therefore, the Equalization (EQ) parameter needs to be used at the power amplifier end of the tv to perform frequency domain equalization compensation. For some middle and low-end television products, because the consistency of the speakers is poor, all speakers of the same television cannot be adapted by using a set of EQ parameters, and therefore, for such middle and low-end television products, frequency domain equalization compensation needs to be performed for each television.
In the prior art, EQ parameters can be customized for the power amplifier of each television manually. Specifically, the EQ parameters are manually adjusted by the staff according to the sound quality played by the speaker until the sound quality played by the speaker reaches a preset target.
However, the method of the prior art has low efficiency and high cost, and is difficult to meet the actual requirement.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a system for determining and processing an equalization parameter of electronic equipment, which are used for solving the problems of low efficiency and high cost of customizing an EQ parameter in the prior art.
A first aspect of an embodiment of the present invention provides a method for determining and processing an equalization parameter of an electronic device, where the method includes:
sending an input sweep frequency signal to the electronic equipment;
receiving an output frequency sweep signal output by audio output equipment of the electronic equipment according to the input frequency sweep signal;
comparing and analyzing the output frequency sweep signal and the input frequency sweep signal to obtain frequency response information of the audio output equipment, wherein the frequency response information is used for representing that the frequency range of the audio output equipment is not in a preset frequency range;
according to the frequency response information of the audio output equipment, determining an equalization parameter of the electronic equipment, wherein the equalization parameter is used for indicating a frequency domain equalization compensation amount of the audio output equipment, so that the frequency range of the audio output equipment after frequency domain equalization compensation is located in the preset frequency range;
and sending the equalization parameters to the electronic equipment so that the electronic equipment stores the equalization parameters.
Further, the determining an equalization parameter of the electronic device according to the frequency response information of the audio output device includes:
determining an expected equalization compensation curve according to the frequency response information of the audio output equipment;
acquiring a filter type of the electronic equipment;
and determining the equalization parameters of the electronic equipment according to the filter type of the electronic equipment and the expected equalization compensation curve.
Further, the determining an equalization parameter of the electronic device according to the filter type of the electronic device and the desired equalization compensation curve includes:
if the filter type of the electronic equipment is a first type, performing amplitude-frequency compensation processing and phase-frequency compensation processing according to the expected equalization compensation curve to obtain equalization parameters of the electronic equipment;
wherein the first type comprises an Infinite Impulse Response (IIR) type or a type that does not support parameter adjustment.
Further, the determining an equalization parameter of the electronic device according to the filter type of the electronic device and the desired equalization compensation curve includes:
if the filter type of the electronic equipment is a second type, performing amplitude-frequency compensation processing according to the expected equalization compensation curve to obtain an equalization parameter of the electronic equipment;
wherein the second type comprises a finite impulse response, FIR, type.
Further, before sending the input swept frequency signal to the electronic device, the method further includes:
and selecting the input sweep frequency signal matched with the application type according to the application type of the electronic equipment.
Further, the receiving an output sweep signal output by the audio output device of the electronic device according to the sweep input information includes:
receiving a plurality of swept frequency output sub-signals respectively received by a plurality of audio input devices;
and weighting the plurality of sweep output sub-signals by using the device characteristics of the audio output device of the electronic device and the relative positions of the plurality of audio input devices and the audio output device of the electronic device as weighting coefficients to obtain the output sweep signals.
Further, the method also comprises the following steps:
receiving a new output sweep frequency signal sent by the electronic equipment based on the saved equalization parameter;
and verifying the equalization parameters stored in the electronic equipment according to the input sweep frequency signal and the new output sweep frequency signal.
A second aspect of the embodiments of the present invention provides an apparatus for determining and processing an equalization parameter of an electronic device, including:
the sending module is used for sending an input sweep frequency signal to the electronic equipment;
the receiving module is used for receiving an output frequency sweep signal output by audio output equipment of the electronic equipment according to the input frequency sweep signal;
the comparison module is used for performing comparison analysis on the output frequency sweep signal and the input frequency sweep signal to obtain frequency response information of the audio output equipment, wherein the frequency response information is used for representing that the frequency range of the audio output equipment is not in a preset frequency range;
the determining module is configured to determine an equalization parameter of the electronic device according to the frequency response information of the audio output device, where the equalization parameter is used to indicate a frequency domain equalization compensation amount for the audio output device, so that a frequency range of the audio output device after frequency domain equalization compensation is within the preset frequency range;
the sending module is further configured to send the equalization parameter to the electronic device, so that the electronic device stores the equalization parameter.
Further, the determining module includes:
a first determining unit for determining an expected equalization compensation curve according to frequency response information of the audio output device;
an obtaining unit, configured to obtain a filter type of the electronic device;
and the second determining unit is used for determining the equalization parameters of the electronic equipment according to the filter type of the electronic equipment and the expected equalization compensation curve.
Further, the second determining unit is specifically configured to:
when the filter type of the electronic equipment is a first type, performing amplitude-frequency compensation processing and phase-frequency compensation processing according to the expected equalization compensation curve to obtain equalization parameters of the electronic equipment;
wherein the first type comprises an Infinite Impulse Response (IIR) type or a type that does not support parameter adjustment.
Further, the second determining unit is specifically further configured to:
when the filter type of the electronic equipment is a second type, performing amplitude-frequency compensation processing according to the expected equalization compensation curve to obtain an equalization parameter of the electronic equipment;
wherein the second type comprises a finite impulse response, FIR, type.
Further, the method also comprises the following steps:
and the selection module is used for selecting the input sweep frequency signal matched with the application type according to the application type of the electronic equipment.
Further, the receiving module is specifically configured to:
receiving a plurality of swept frequency output sub-signals respectively received by a plurality of audio input devices;
and weighting the plurality of sweep output sub-signals by using the device characteristics of the audio output device of the electronic device and the relative positions of the plurality of audio input devices and the audio output device of the electronic device as weighting coefficients to obtain the output sweep signals.
Further, the receiving module is further configured to:
receiving a new output sweep frequency signal sent by the electronic equipment based on the saved equalization parameter; the device further comprises:
and the verification module is used for verifying the equalization parameters stored in the electronic equipment according to the input sweep frequency signals and the new output sweep frequency signals.
A third aspect of the embodiments of the present invention provides a parameter balancing apparatus, including:
a memory for storing program instructions;
a processor for calling and executing the program instructions in the memory to perform the method steps of the first aspect.
A fourth aspect of the present invention provides an equalization parameter determination processing system, including an electronic device and the parameter equalization apparatus according to the third aspect, where the electronic device is in communication connection with the parameter equalization apparatus, the electronic device includes an audio output device, and the parameter equalization apparatus includes an audio input device.
A fifth aspect of the embodiments of the present invention provides a readable storage medium, where a computer program is stored in the readable storage medium, and the computer program is configured to execute the method according to the first aspect.
According to the method, the device and the system for determining and processing the equalization parameters of the electronic equipment, provided by the embodiment of the invention, the parameter equalization device automatically sends the input frequency sweep signal to the electronic equipment, the frequency response information of the audio output equipment can be obtained based on the input frequency sweep signal and the output frequency sweep signal of the audio output equipment of the electronic equipment, the equalization parameters of the electronic equipment can be determined based on the frequency response information, and the electronic equipment can obtain ideal frequency response information after performing frequency domain equalization compensation according to the equalization parameters. Therefore, the method of the embodiment can realize automatic equalization parameter customization of the electronic device, and meanwhile, the equalization parameters obtained by the method of the embodiment can effectively perform frequency domain equalization compensation on the electronic device, thereby ensuring good presentation effect of the audio output device of the electronic device.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings needed to be used in the description of the embodiments or the prior art, and obviously, the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without inventive labor.
Fig. 1 is a diagram illustrating an exemplary system architecture of a method for determining and processing an equalization parameter of an electronic device according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a first embodiment of a method for determining and processing an equalization parameter of an electronic device according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a second embodiment of a method for determining and processing an equalization parameter of an electronic device according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a third embodiment of a method for determining and processing an equalization parameter of an electronic device according to an embodiment of the present invention;
fig. 5 is a block diagram of an apparatus for determining and processing equalization parameters of an electronic device according to an embodiment of the present invention;
fig. 6 is a block diagram of an apparatus for determining and processing equalization parameters of an electronic device according to an embodiment of the present invention;
fig. 7 is a block diagram of an apparatus for determining and processing equalization parameters of an electronic device according to an embodiment of the present invention;
fig. 8 is a block diagram of an apparatus for determining and processing equalization parameters of an electronic device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a parameter equalizing apparatus 900 according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
Fig. 1 is a system architecture example diagram of an equalization parameter determination processing method of an electronic device according to an embodiment of the present invention, and as shown in fig. 1, the method relates to a parameter equalization apparatus and an electronic device. The method can be applied to the scene of the electronic equipment before delivery inspection. The parameter equalization device is in communication connection with the electronic equipment, the parameter equalization device comprises audio input equipment, the parameter equalization device is based on the audio input equipment, equalization parameters are determined for the electronic equipment through the method of the embodiment of the invention, the equalization parameters are further sent to the electronic equipment for storage, and after the electronic equipment leaves a factory, frequency domain equalization compensation is carried out on the electronic equipment based on the equalization parameters. Fig. 1 illustrates a parameter balancing apparatus as a portable computer, in a specific implementation process, the parameter balancing apparatus may be a desktop computer, an embedded computer, or other devices having computing capabilities and communication interfaces, and a specific form of the parameter balancing apparatus is not limited in the embodiment of the present invention. In addition, the electronic device according to the embodiment of the present invention may be a flat panel television or other electronic devices with an audio playing function, and the specific form of the electronic device according to the embodiment of the present invention is not limited.
In the example of the architecture shown in fig. 1, the speakers of the electronic device are two-channel speakers, the audio input device of the parameter equalizing apparatus is two microphone arrays, each microphone array includes a plurality of microphones, the two microphone arrays can be respectively fixed to two ends of the electronic device in a side-clamping manner, and each microphone array is used for collecting a sound of a provincial channel speaker. The embodiment of the invention does not limit the number of the microphone arrays of the parameter equalization device and the number of the microphones in each microphone array. The number of microphone arrays can be flexibly determined according to the number of channels of the electronic equipment. The number of the microphones in each microphone array can be flexibly determined according to the loudspeaker specification, the sound transmission net shape and the like of the electronic equipment. The audio input device of the parameter equalization apparatus is not limited to the microphone array, and may be another type of audio input device.
In the architecture example shown in fig. 1, the parameter equalization apparatus and the electronic device are connected and communicated through a serial interface and a communication cable. In the specific implementation process, connection communication can be performed in a mode without limitation of using a serial interface and a communication cable, connection can also be performed in a mode of wireless connection and the like, and communication can be performed in a message interaction mode.
In addition, in the specific implementation process, in order to ensure a better effect of determining the equalization parameters, the noise of the environment where the parameter equalization device and the electronic equipment are located should meet certain conditions. For example, in the desired adaptation of the loudspeaker frequency range, the sound pressure of the narrow-band component of the ambient noise should be at least 10dB less than the sound pressure of the corresponding loudspeaker frequency sweep output frequency near the microphone array pick-up point, the total noise level should be controlled as much as possible below 40dB, and the room reverberation time T60 should be as little as possible less than 1 second.
It should be noted that, in a specific implementation process, when the speakers of the electronic device are multi-channel speakers, each speaker channel of the electronic device may need to use different equalization parameters, and the equalization parameters of the channel may be determined separately for each speaker according to the method of the following embodiment.
Fig. 2 is a schematic flow chart of a first embodiment of an equalization parameter determination processing method for an electronic device according to an embodiment of the present invention, where an execution subject of the method is the above-mentioned parameter equalization apparatus. As shown in fig. 2, the method includes:
s201, sending an input sweep frequency signal to the electronic equipment.
Illustratively, the parameter equalizing device may send the input sweep signal to the electronic device via the serial interface and the communication cable of fig. 1 described above.
S202, receiving an output sweep frequency signal output by audio output equipment of the electronic equipment according to the input sweep frequency signal.
Optionally, when the parameter equalization device sends the input sweep frequency signal to the electronic device, the parameter equalization device may also instruct, through a serial interface with the electronic device, the electronic device via which speaker channel the input sweep frequency signal is output.
In one example, two microphone arrays of the parameter equalization device are respectively clamped at two ends of the electronic device, and are respectively close to two speaker channels of the electronic device, and then the parameter equalization device can instruct the electronic device to output the input sweep frequency signal through the two speaker channels simultaneously through the serial interface. And then, the parameter balancing device controls the two microphone arrays to acquire the frequency-sweeping output sound field, and two output frequency-sweeping signals are obtained. And the parameter equalization device respectively executes subsequent steps aiming at the output frequency sweeping signals corresponding to the two microphone arrays to obtain the equalization parameters of the loudspeaker channel corresponding to each microphone array.
In another example, the parameter equalizing apparatus may first place only one microphone array side at one end of the electronic device, close to one speaker channel located at the one end, and instruct the electronic device to output the input frequency sweep signal through only one speaker channel through the serial interface, and control the microphone array of the side clamp to acquire the frequency sweep output sound field. And executing the subsequent steps to obtain the balance parameters of the corresponding loudspeaker channel at the time. And then the equalization parameters for the other loudspeaker channel are obtained in the same way.
And S203, comparing and analyzing the output frequency sweep signal and the input frequency sweep signal to obtain frequency response information of the audio output equipment, wherein the frequency response information is used for representing that the frequency range of the audio output equipment is not in a preset frequency range.
Alternatively, the frequency response information of the audio output device may be determined by comparing the correlation between the input swept frequency signal and the output swept frequency signal. First, the signal delay estimation can be performed, and the input frequency sweep signal and the output frequency sweep signal are aligned in the time domain. And secondly, performing time-varying filtering on the input frequency-sweep signal to filter interference signals of the input frequency-sweep signal except the frequency of the frequency-sweep signal at the time corresponding to the frequency sweep, so as to reduce the influence of environmental noise. The frequency response information is determined by comparing the amplitude and phase of the input and output sweep signals.
Optionally, the frequency response information determined by comparing the amplitudes and phases of the input frequency sweep signal and the output frequency sweep signal may be a frequency response curve. And may specifically include amplitude frequency response curves and phase frequency response curves.
And S204, determining the balance parameters of the electronic equipment according to the frequency response information of the audio output equipment.
The equalization parameter is used for indicating a frequency domain equalization compensation amount of the audio output device, so that the frequency range of the audio output device after frequency domain equalization compensation is located in the preset frequency range.
In a more ideal case, the electronic device should have a flatter frequency response curve. In this step, after determining the actual frequency response information of the audio output device, for example, the actual frequency response curve, the equalization parameter for indicating the frequency domain equalization compensation amount may be obtained, and the frequency range of the audio output by the electronic device according to the equalization parameter may be located in a more ideal frequency range, so that the frequency response curve may also reach a more flat curve.
And S205, sending the equalization parameters to the electronic equipment so that the electronic equipment stores the equalization parameters.
Optionally, the parameter balancing device may write the balancing parameters into the electronic device through the serial interface.
Specifically, after the equalization parameter is obtained for the first time, the equalization parameter may be temporarily stored by the electronic device, and the parameter equalization apparatus verifies whether the equalization parameter is reasonable by sending the input sweep frequency signal to the electronic device again, and after the verification is passed, notifies the electronic device to write the equalization parameter into a permanent storage space of the electronic device that the user cannot erase.
In the specific implementation process, the audio input device of the parameter equalizing device can be arranged on the mechanical arm to control the sound collecting position of the audio input device, so that complete automation is realized.
In this embodiment, the parameter equalization device automatically sends an input sweep frequency signal to the electronic device, based on the input sweep frequency signal and an output sweep frequency signal of an audio output device of the electronic device, frequency response information of the audio output device may be obtained, based on the frequency response information, an equalization parameter of the electronic device may be determined, and after performing frequency domain equalization compensation according to the equalization parameter, the electronic device may obtain more ideal frequency response information. Therefore, the method of the embodiment can realize automatic equalization parameter customization of the electronic device, and meanwhile, the equalization parameters obtained by the method of the embodiment can effectively perform frequency domain equalization compensation on the electronic device, thereby ensuring good presentation effect of the audio output device of the electronic device.
Optionally, in step S205, if the equalization parameter of the electronic device is temporarily stored, after step S205, the parameter equalization apparatus may send the input sweep frequency signal to the electronic device again, receive a new output sweep frequency signal sent by the electronic device based on the stored equalization parameter, and further verify the equalization parameter stored in the electronic device according to the input sweep frequency signal and the new output sweep frequency signal. For example, it can be determined whether the difference between the frequency response curve obtained from the input sweep signal and the new output sweep signal and the expected curve is within an expected difference range. If the verification is passed, the parameter balancing device can inform the electronic equipment to write the balancing parameters into the permanent storage space, and the process is ended. If the verification is not successful, the above steps S204-S205 may be re-executed with emphasis on the frequency range with poor compensation performance to obtain new equalization parameters and send them to the electronic device. And circularly executing the processes until the equalization parameters are verified.
On the basis of the above embodiments, the present embodiment relates to a specific process in which the parameter equalization apparatus determines the equalization parameter based on the frequency response information.
Fig. 3 is a schematic flowchart of a second embodiment of the method for determining an equalization parameter of an electronic device according to an embodiment of the present invention, and as shown in fig. 3, the step S204 may include:
s301, determining an expected equalization compensation curve according to the frequency response information of the audio output equipment.
As previously described, the frequency response information may be a frequency response curve, which may include an amplitude frequency response curve and a phase frequency response curve. By analyzing the amplitude-frequency response curve and the phase-frequency response curve, a desired equalization compensation curve can be obtained.
S302, obtaining the filter type of the electronic equipment.
The filter type of the electronic equipment refers to a filter type selected by a power amplifier of the electronic equipment.
Optionally, the parameter equalizing device may read the filter type of the electronic device from the electronic device through a serial interface.
And S303, determining the equalization parameters of the electronic equipment according to the filter type of the electronic equipment and the expected equalization compensation curve.
In an optional implementation manner, if the filter type of the electronic device is the first type, amplitude-frequency compensation processing and phase-frequency compensation processing are performed according to the expected equalization compensation curve, so as to obtain an equalization parameter of the electronic device.
The first type includes an Infinite Impulse Response (IIR) type or a type that does not support parameter adjustment.
In another optional implementation manner, if the filter type of the electronic device is the second type, amplitude-frequency compensation processing is performed according to the expected equalization compensation curve to obtain an equalization parameter of the electronic device.
The second type includes a Finite Impulse Response (FIR) type.
Specifically, when the filter type of the electronic device is the IIR type, the IIR filter may be divided into two IIR filters in a cascade form, one filter may compensate for the amplitude-frequency defect in a minimum phase system manner according to the desired equalization compensation curve, and the other filter may compensate for the phase-frequency defect in a full system manner according to the desired equalization compensation curve. When the balance parameters are calculated, the IIR algorithm with any amplitude and the IIR algorithm with any phase can be adopted for comprehensive calculation. And when the filter type of the electronic equipment is the FIR type, calculating the equalization parameters by adopting an IIR algorithm with any amplitude directly according to the expected equalization compensation curve. When the filter type of the electronic device is the type which does not support parameter adjustment, it is indicated that the power amplifier of the electronic device does not support the filtering function or the filtering function cannot meet the compensation requirement.
It is worth mentioning that the equalization parameters of the electronic device may also be determined based on certain parameters, which may include, for example, the start frequency of the compensation, the end frequency, the fitting accuracy, etc. The fitting precision is used for controlling the fitting degree of the frequency response curve expectation equalization compensation curve matched with the equalization parameters, the fitting degree is moderate, the fitting precision is too low to achieve the expected effect, the fitting precision is too high, the algorithm is long in time consumption, and overfitting is easy to occur. These parameters may be stored in the parameter equalizing device in advance in a manual setting manner.
In an alternative embodiment, before sending the input sweep signal to the electronic device, the parameter equalization apparatus may further select an input sweep signal matching the application type of the electronic device according to the application type.
The application type of the electronic device refers to a type of a scene to which the electronic device is applied.
Illustratively, if the television is used primarily for music playback, a constant amplitude linear frequency sweep signal may be selected as the input frequency sweep signal. If the television is used primarily for teleconferencing, a constant amplitude logarithmic frequency sweep signal may be selected as the input frequency sweep signal. If the television is mainly used for constructing a stereo environment, the constant-amplitude discrete frequency point frequency sweeping signal can be selected as the input frequency sweeping signal.
On the basis of the above embodiments, the present embodiment relates to a specific process of receiving an output swept frequency signal by a parameter equalization apparatus.
Fig. 4 is a schematic flowchart of a third embodiment of a method for determining an equalization parameter of an electronic device according to an embodiment of the present invention, as shown in fig. 4, step S202 may include:
s401, receiving a plurality of sweep output sub-signals respectively received by a plurality of audio input devices.
Optionally, when the audio input device of the parameter equalizing apparatus is, for example, the microphone array shown in fig. 1, the parameter equalizing apparatus includes a plurality of audio input devices, for example, a plurality of microphones. In this case, after the electronic device plays the output sweep frequency signal, the output sweep frequency signal can be collected by all the audio input devices of the parameter equalization device, and then the parameter equalization device can receive the sweep frequency output sub-signals respectively received by all the audio input devices.
It should be noted that the "frequency sweep output sub-signal" described in the embodiment of the present invention refers to a frequency sweep signal collected by an audio input device.
S402, weighting the plurality of sweep output sub-signals by taking the device characteristics of the audio output device of the electronic device and the relative positions of the plurality of audio input devices and the audio output device of the electronic device as weighting coefficients to obtain the output sweep signals.
The device characteristics of the audio output device may include speaker characteristics, acoustic cavity structures, and the like.
Optionally, if the acoustic centers of the audio input devices and the speaker of the electronic device are equally spaced, the frequency sweep output sub-signals of the audio input devices may be weighted averagely. If the acoustic centers of the audio input devices and the loudspeaker of the electronic device in the plurality of audio input devices are not equidistant, a weight coefficient can be distributed to each frequency sweep output sub-signal by combining the device characteristics and the relative positions, and the output frequency sweep signals can be obtained based on the weight coefficients.
Fig. 5 is a block diagram of an apparatus for determining and processing equalization parameters of an electronic device according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes:
the sending module 501 is configured to send an input sweep signal to an electronic device.
A receiving module 502, configured to receive an output frequency sweep signal output by an audio output device of the electronic device according to the input frequency sweep signal.
A comparison module 503, configured to perform comparison analysis on the output frequency sweep signal and the input frequency sweep signal to obtain frequency response information of the audio output device, where the frequency response information is used to represent that a frequency range of the audio output device is not within a preset frequency range.
A determining module 504, configured to determine, according to the frequency response information of the audio output device, an equalization parameter of the electronic device, where the equalization parameter is used to indicate a frequency domain equalization compensation amount for the audio output device, so that a frequency range of the audio output device after frequency domain equalization compensation is located in the preset frequency range.
The sending module 501 is further configured to send the equalization parameter to the electronic device, so that the electronic device stores the equalization parameter.
The device is used for realizing the method embodiments, the realization principle and the technical effect are similar, and the details are not repeated here.
Fig. 6 is a block diagram of an apparatus for determining and processing equalization parameters of an electronic device according to an embodiment of the present invention, and as shown in fig. 6, a determining module 504 includes:
a first determining unit 5041, configured to determine a desired equalization compensation curve according to the frequency response information of the audio output device.
An obtaining unit 5042, configured to obtain a filter type of the electronic device.
A second determining unit 5043, configured to determine an equalization parameter of the electronic device according to the filter type of the electronic device and the desired equalization compensation curve.
In another embodiment, the second determining unit 5043 is specifically configured to:
and when the filter type of the electronic equipment is a first type, performing amplitude-frequency compensation processing and phase-frequency compensation processing according to the expected equalization compensation curve to obtain the equalization parameters of the electronic equipment.
Wherein the first type comprises an IIR type or a type that does not support parameter adjustment.
In another embodiment, the second determining unit 5043 is specifically configured to:
when the filter type of the electronic equipment is a second type, performing amplitude-frequency compensation processing according to the expected equalization compensation curve to obtain an equalization parameter of the electronic equipment;
wherein the second type comprises an FIR type.
Fig. 7 is a block diagram of an apparatus for determining and processing equalization parameters of an electronic device according to an embodiment of the present invention, as shown in fig. 7, further including:
a selecting module 505, configured to select the input sweep signal matched with the application type according to the application type of the electronic device.
In another embodiment, the receiving module 502 is specifically configured to:
receiving a plurality of swept frequency output sub-signals respectively received by a plurality of audio input devices;
and weighting the plurality of sweep output sub-signals by using the device characteristics of the audio output device of the electronic device and the relative positions of the plurality of audio input devices and the audio output device of the electronic device as weighting coefficients to obtain the output sweep signals.
In another embodiment, the receiving module 502 is further configured to:
receiving a new output sweep signal sent by the electronic device based on the saved equalization parameters. Correspondingly, fig. 8 is a block diagram of an apparatus for determining and processing equalization parameters of your electronic device according to an embodiment of the present invention, and as shown in fig. 8, the apparatus further includes:
a verification module 506, configured to verify the equalization parameter stored in the electronic device according to the input sweep signal and the new output sweep signal.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the determining module is called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor that can call program code. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Fig. 9 is a schematic structural diagram of a parameter equalizing apparatus 900 according to an embodiment of the present invention. The parameter equalization device may be the portable computer shown in fig. 1, or may also be a desktop computer, an embedded computer, or the like, or the parameter equalization device may also be a control device in the portable computer, the desktop computer, or the embedded computer, which is not limited in this embodiment of the present invention. As shown in fig. 9, the parameter equalizing apparatus may include: the system comprises a processor 91, a memory 92, a communication interface 93 and a system bus 94, wherein the memory 92 and the communication interface 93 are connected with the processor 91 through the system bus 94 and complete mutual communication, the memory 92 is used for storing computer execution instructions, the communication interface 93 is used for communicating with other devices, and the processor 91 implements the scheme of the embodiment shown in fig. 2 to 4 when executing the computer program.
The system bus mentioned in fig. 9 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface is used for realizing communication between the database access device and other equipment (such as a client, a read-write library and a read-only library). The memory may comprise Random Access Memory (RAM) and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The processor may be a general-purpose processor, including a central processing unit CPU, a Network Processor (NP), and the like; but also a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
An embodiment of the present invention further provides an equalization parameter determination processing system, where the system includes an electronic device and the parameter equalization apparatus shown in fig. 9, where the electronic device is in communication connection with the parameter equalization apparatus, the electronic device includes an audio output device, and the parameter equalization apparatus includes an audio input device.
Optionally, an embodiment of the present invention further provides a storage medium, where instructions are stored in the storage medium, and when the storage medium is run on a computer, the storage medium causes the computer to execute the method according to the embodiment shown in fig. 2 to 4.
Optionally, an embodiment of the present invention further provides a chip for executing the instruction, where the chip is configured to execute the method in the embodiment shown in fig. 2 to 4.
Embodiments of the present invention further provide a program product, where the program product includes a computer program, where the computer program is stored in a storage medium, and at least one processor may read the computer program from the storage medium, and when the at least one processor executes the computer program, the at least one processor may implement the method in the embodiments shown in fig. 2 to fig. 4.
In the embodiments of the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division". "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.
It is to be understood that the various numerical references referred to in the embodiments of the present invention are merely for convenience of description and distinction and are not intended to limit the scope of the embodiments of the present invention.
It should be understood that, in the embodiment of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (13)
1. An equalization parameter determination processing method for an electronic device, comprising:
sending an input sweep frequency signal to the electronic equipment;
receiving an output frequency sweep signal output by audio output equipment of the electronic equipment according to the input frequency sweep signal;
comparing and analyzing the output frequency sweep signal and the input frequency sweep signal to obtain frequency response information of the audio output equipment, wherein the frequency response information is used for representing that the frequency range of the audio output equipment is not in a preset frequency range;
according to the frequency response information of the audio output equipment, determining an equalization parameter of the electronic equipment, wherein the equalization parameter is used for indicating a frequency domain equalization compensation amount of the audio output equipment, so that the frequency range of the audio output equipment after frequency domain equalization compensation is located in the preset frequency range;
sending the equalization parameters to the electronic equipment so that the electronic equipment stores the equalization parameters;
the receiving of the output sweep signal output by the audio output device of the electronic device according to the input sweep signal includes:
receiving a plurality of swept frequency output sub-signals respectively received by a plurality of audio input devices;
weighting the plurality of sweep output sub-signals by using the device characteristics of the audio output device of the electronic device and the relative positions between the plurality of audio input devices and the audio output device of the electronic device as weighting coefficients to obtain the output sweep signals;
the method further comprises the following steps:
receiving a new output sweep frequency signal sent by the electronic equipment based on the saved equalization parameter;
and verifying the equalization parameters stored in the electronic equipment according to the input sweep frequency signal and the new output sweep frequency signal.
2. The method of claim 1, wherein determining equalization parameters of the electronic device based on the frequency response information of the audio output device comprises:
determining an expected equalization compensation curve according to the frequency response information of the audio output equipment;
acquiring a filter type of the electronic equipment;
and determining the equalization parameters of the electronic equipment according to the filter type of the electronic equipment and the expected equalization compensation curve.
3. The method of claim 2, wherein determining equalization parameters for the electronic device based on the filter type of the electronic device and the desired equalization compensation curve comprises:
if the filter type of the electronic equipment is a first type, performing amplitude-frequency compensation processing and phase-frequency compensation processing according to the expected equalization compensation curve to obtain equalization parameters of the electronic equipment;
wherein the first type comprises an Infinite Impulse Response (IIR) type or a type that does not support parameter adjustment.
4. The method of claim 2, wherein determining equalization parameters for the electronic device based on the filter type of the electronic device and the desired equalization compensation curve comprises:
if the filter type of the electronic equipment is a second type, performing amplitude-frequency compensation processing according to the expected equalization compensation curve to obtain an equalization parameter of the electronic equipment;
wherein the second type comprises a finite impulse response, FIR, type.
5. The method of any of claims 1-4, wherein prior to sending the input swept frequency signal to the electronic device, further comprising:
and selecting the input sweep frequency signal matched with the application type according to the application type of the electronic equipment.
6. An equalization parameter determination processing apparatus of an electronic device, comprising:
the sending module is used for sending an input sweep frequency signal to the electronic equipment;
the receiving module is used for receiving an output frequency sweep signal output by audio output equipment of the electronic equipment according to the input frequency sweep signal;
the comparison module is used for performing comparison analysis on the output frequency sweep signal and the input frequency sweep signal to obtain frequency response information of the audio output equipment, wherein the frequency response information is used for representing that the frequency range of the audio output equipment is not in a preset frequency range;
the determining module is configured to determine an equalization parameter of the electronic device according to the frequency response information of the audio output device, where the equalization parameter is used to indicate a frequency domain equalization compensation amount for the audio output device, so that a frequency range of the audio output device after frequency domain equalization compensation is within the preset frequency range;
the sending module is further configured to send the equalization parameter to the electronic device, so that the electronic device stores the equalization parameter;
the receiving module is specifically configured to:
receiving a plurality of swept frequency output sub-signals respectively received by a plurality of audio input devices;
weighting the plurality of sweep output sub-signals by using the device characteristics of the audio output device of the electronic device and the relative positions between the plurality of audio input devices and the audio output device of the electronic device as weighting coefficients to obtain the output sweep signals;
the receiving module is further configured to:
receiving a new output sweep frequency signal sent by the electronic equipment based on the saved equalization parameter; the device further comprises:
and the verification module is used for verifying the equalization parameters stored in the electronic equipment according to the input sweep frequency signals and the new output sweep frequency signals.
7. The apparatus of claim 6, wherein the determining module comprises:
a first determining unit for determining an expected equalization compensation curve according to frequency response information of the audio output device;
an obtaining unit, configured to obtain a filter type of the electronic device;
and the second determining unit is used for determining the equalization parameters of the electronic equipment according to the filter type of the electronic equipment and the expected equalization compensation curve.
8. The apparatus according to claim 7, wherein the second determining unit is specifically configured to:
when the filter type of the electronic equipment is a first type, performing amplitude-frequency compensation processing and phase-frequency compensation processing according to the expected equalization compensation curve to obtain equalization parameters of the electronic equipment;
wherein the first type comprises an Infinite Impulse Response (IIR) type or a type that does not support parameter adjustment.
9. The apparatus according to claim 7, wherein the second determining unit is further configured to:
when the filter type of the electronic equipment is a second type, performing amplitude-frequency compensation processing according to the expected equalization compensation curve to obtain an equalization parameter of the electronic equipment;
wherein the second type comprises a finite impulse response, FIR, type.
10. The apparatus of any one of claims 6-9, further comprising:
and the selection module is used for selecting the input sweep frequency signal matched with the application type according to the application type of the electronic equipment.
11. An apparatus for parameter equalization, comprising:
a memory for storing program instructions;
a processor for invoking and executing program instructions in said memory for performing the method steps of any of claims 1-5.
12. An equalization parameter determination processing system comprising an electronic device and the parameter equalization apparatus of claim 11, the electronic device being communicatively connected to the parameter equalization apparatus, the electronic device comprising an audio output device, and the parameter equalization apparatus comprising an audio input device.
13. A readable storage medium, characterized in that a computer program is stored in the readable storage medium for performing the method of any of claims 1-5.
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| CN201910283884.9A CN110109644B (en) | 2019-04-10 | 2019-04-10 | Method, device and system for determining and processing equalization parameters of electronic equipment |
| PCT/CN2019/127754 WO2020207053A1 (en) | 2019-04-10 | 2019-12-24 | Equalization parameter determination and processing method, apparatus and system for electronic device |
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| CN112312270B (en) * | 2020-07-14 | 2023-03-28 | 深圳市逸音科技有限公司 | Audio frequency response and phase testing method and device based on computer sound card |
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| KR101895656B1 (en) * | 2012-03-22 | 2018-10-18 | 디락 리서치 에이비 | Audio Precompensation Controller Design Using a Variable Set of Support Loudspeakers |
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| CN109547848B (en) * | 2018-11-23 | 2021-02-12 | 北京达佳互联信息技术有限公司 | Loudness adjustment method and device, electronic equipment and storage medium |
| CN110109644B (en) * | 2019-04-10 | 2020-11-17 | 广州视源电子科技股份有限公司 | Method, device and system for determining and processing equalization parameters of electronic equipment |
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