WO2021120101A1

WO2021120101A1 - Signal calibration method, apparatus and device, and storage medium

Info

Publication number: WO2021120101A1
Application number: PCT/CN2019/126591
Authority: WO
Inventors: 郭璇; 郑亚军; 向征; 邵笑杰
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2021-06-24

Abstract

Disclosed in embodiments of the present invention is a signal calibration method. The method comprises: obtaining a first frequency corresponding to a signal to be processed, and obtaining a resonant frequency of a motor as a second frequency; under the condition that the first frequency and the second frequency are inconsistent, determining sampling coordinate indexes corresponding to a plurality of sampling points according to the first frequency and the second frequency; performing preset processing on the sampling coordinate indexes to obtain integer coordinate indexes and decimal coordinate indexes corresponding to the sampling coordinate indexes; and processing the signal to be processed according to the integer coordinate indexes and the decimal coordinate indexes to generate a target calibration signal, and outputting the target calibration signal. By adopting the signal calibration method provided by the invention, a vibration effect difference caused by a performance or parameter difference of different motor units can be reduced, the consistency of the vibration effect corresponding to an excitation signal is improved, and the user experience is improved. In addition, also provided are a signal calibration apparatus and device, and a storage medium.

Description

Signal calibration method, device, equipment and storage medium

Technical field

The present invention relates to the technical field of signal processing, in particular to a method, device, equipment and storage medium for signal calibration.

Background technique

The tactile feedback technology makes the user feel the changes in tactile sensation by changing the force, vibration and other methods. Tactile feedback technology can be applied to the auxiliary creation and control of virtual scenes or virtual objects in smart phones, tablet computers, etc. Among them, loading a specific excitation signal on an actuator (ie, a motor) to output a specific vibration effect is a main way to realize haptic feedback.

Normally, the excitation signal of the motor is only aimed at a specific motor frequency, so that it outputs a specific vibration effect. However, in actual application scenarios, due to the differences between different motor units, such as obvious differences in resonance frequency, it will cause the excitation signal to be mismatched with the motor units, causing the difference in vibration effects and failing to output specific vibrations. effect.

Therefore, there is an urgent need for a method to adjust the excitation signal and the motor.

Summary of the invention

Based on this, it is necessary to propose a signal calibration method, device, computer equipment, and storage medium to address the above-mentioned problems.

A signal calibration method, the method includes:

Acquiring the first frequency corresponding to the signal to be processed, and acquiring the resonant frequency of the motor as the second frequency;

In a case where the first frequency and the second frequency are not consistent, determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency;

Performing preset processing on the sampling coordinate index, and obtaining integer coordinate indexes and decimal coordinate indexes corresponding to the sampling coordinate index;

The signal to be processed is processed according to the integer coordinate index and the decimal coordinate index, and a target calibration signal is generated and output.

In one embodiment, the method further includes: controlling the motor to vibrate, and performing the step of obtaining the resonant frequency of the motor as the second frequency; after the step of generating and outputting the target calibration signal, further including: The motor is controlled to vibrate according to the target calibration signal.

In an embodiment, the step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency further includes: determining according to the ratio of the first frequency and the second frequency The sampling interval between the sampling points; the number of sampling points of the several sampling points is determined according to the signal to be processed; the coordinates of each sampling point are determined according to the sampling interval and the number of sampling points, and according to the sampling point The coordinates construct the sampling coordinate index.

In an embodiment, after the step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency, the method further includes: performing length cropping on the sampling coordinate index to obtain a target calibration signal The index coordinates of the sampling point.

In one embodiment, after the step of constructing a sampling coordinate index based on the sampling point coordinates, the method further includes: rounding each sampling point coordinate contained in the sampling coordinate index to obtain the integer of each sampling point coordinate In the part, the integer part is length-cut to generate an integer coordinate index; the difference between the sampling point index coordinate and the integer coordinate index is obtained to generate a decimal coordinate index.

In an embodiment, the step of processing the signal to be processed according to the integer coordinate index and the decimal coordinate index further includes: according to a preset interpolation formula, the integer coordinate index and the decimal coordinate The index performs interpolation processing on the signal to be processed.

In one embodiment, the step of performing interpolation processing on the signal to be processed according to the preset interpolation formula, the integer coordinate index and the decimal coordinate index further includes: according to the formula Y=Fracoef×(X< Intcoef+k ₁ >-X<Intcoef+k ₂ >)+X<Intcoef+k ₃ > calculate the signal to be processed, where X is the signal to be processed, Intcoef is the integer coordinate index, Fracoef is the decimal coordinate index, and k _1, k _2, k ₃ is a constant term and _{_{k 2 = k 3, X <}} Intcoef + k i> (i = 1,2,3) are the coordinates in an integer index Intcoef + k _{i (i} = 1,2,3 The signal to be processed under ), Y is the target calibration signal.

In an embodiment, after the step of obtaining the resonant frequency corresponding to the device to be calibrated as the second frequency, the method further includes: judging whether the first frequency and the second frequency are consistent; In the case where the second frequencies are not consistent, the step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency is performed. In the case where the first frequency and the second frequency are the same, the step of generating and outputting a target calibration signal is performed.

A signal calibration device, said device comprising:

An obtaining module, configured to obtain the first frequency corresponding to the signal to be processed, and obtain the resonant frequency of the motor as the second frequency;

A determining module, configured to determine sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency when the first frequency and the second frequency are inconsistent;

A calculation module, configured to perform preset processing on the sampling coordinate index, and obtain the integer coordinate index and the decimal coordinate index corresponding to the sampling coordinate index;

The generating module is configured to process the signal to be processed according to the integer coordinate index and the decimal coordinate index to generate and output a target calibration signal.

In one embodiment, the device further includes: an excitation module for controlling the motor to vibrate and performing the step of obtaining the resonant frequency of the motor as the second frequency; and controlling the motor according to the target calibration signal Vibrate.

In an embodiment, the determining module further includes: a first determining unit, configured to determine the sampling distance between the sampling points according to the ratio of the first frequency and the second frequency; and determine the sampling distance between the sampling points according to the signal to be processed The number of sampling points of the several sampling points; the second determining unit is configured to determine the coordinates of each sampling point according to the sampling distance and the number of sampling points, and construct a sampling coordinate index according to the sampling point coordinates.

In an embodiment, the calculation module further includes: a preprocessing unit, configured to perform length cropping on the sampling coordinate index to obtain the sampling point index coordinates of the target calibration signal.

In an embodiment, the calculation module further includes: a first calculation unit, configured to perform rounding processing on each sampling point coordinate contained in the sampling coordinate index, to obtain the integer part of each sampling point coordinate, and to calculate the integer Partial length cutting is performed to generate an integer coordinate index; the second calculation unit is used to obtain the difference between the sampling point index coordinate and the integer coordinate index to generate a decimal coordinate index.

In an embodiment, the generating module further includes: an interpolation processing unit, configured to perform interpolation processing on the signal to be processed according to a preset interpolation formula, the integer coordinate index, and the decimal coordinate index.

In an embodiment, the interpolation processing unit further includes: an interpolation calculation sub-module for calculating according to the formula Y=Fracoef×(X<Intcoef+k ₁ >-X<Intcoef+k ₂ >)+X<Intcoef+k ₃ >Calculate the signal to be processed, where X is the signal to be processed, Intcoef is the integer coordinate index, Fracoef is the decimal coordinate index, k ₁ , k ₂ , and k ₃ are constant terms and k ₂ =k ₃ , X<Intcoef _{+ k i> (i = 1,2,3} ) are the coordinates in an integer index Intcoef + k _i in the signal to be processed (i = 1,2,3), Y is a target calibration signal.

In an embodiment, the acquisition module further includes: a judging unit, configured to judge whether the first frequency and the second frequency are consistent; in the case where the first frequency and the second frequency are not consistent, The step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency is performed. In the case where the first frequency and the second frequency are the same, the step of generating and outputting a target calibration signal is performed.

A computer device includes a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the following steps:

A computer-readable storage medium that stores a computer program, and when the computer program is executed by a processor, the processor executes the following steps:

Using the signal calibration method, device, equipment and storage medium of the present invention, first obtain the first frequency corresponding to the signal to be processed, and obtain the resonant frequency of the motor as the second frequency; in the case where the first frequency and the second frequency are inconsistent, Determine the sampling coordinate index corresponding to several sampling points according to the first frequency and the second frequency; then perform preset processing on the sampling coordinate index to obtain the integer coordinate index and decimal coordinate index corresponding to the sampling coordinate index; finally according to the integer coordinate index And the decimal coordinate index to process the signal to be processed to generate and output a target calibration signal. The present invention calibrates the first frequency of the signal to be processed according to the second frequency, so that the frequency when the generated target calibration signal excites the motor is matched with the second frequency, and the generated target calibration signal is adapted to the motor. After adopting the signal calibration method, device, equipment and storage medium of the present invention, the difference in vibration effect caused by the performance or parameter difference of different motor monomers can be reduced, the consistency of the vibration effect corresponding to the excitation signal is improved, and the user experience is improved .

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

among them:

Fig. 1 is an application environment diagram of a signal calibration method in an embodiment;

Figure 2 is a flowchart of a signal calibration method in an embodiment;

Figure 3 is a flowchart of a signal calibration method in an embodiment;

Figure 4 is a structural block diagram of a signal calibration device in an embodiment;

Fig. 5 is a structural block diagram of a signal calibration device in an embodiment;

Fig. 6 is a structural block diagram of a determining module in an embodiment;

Fig. 7 is a structural block diagram of a calculation module in an embodiment;

Fig. 8 is a structural block diagram of a computer device that executes the foregoing signal calibration method in an embodiment.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Fig. 1 is an application environment diagram of a signal calibration method in an embodiment. Referring to Figure 1, the signal calibration method is applied to a motor excitation system. The motor excitation system includes a terminal 110 and a server 120. The terminal 110 and the server 120 are connected through a network. The terminal 110 may specifically be a desktop terminal or a mobile terminal, and the mobile terminal may specifically be a device for acquiring signals and/or signal frequencies. The server 120 may be implemented as an independent server or a server cluster composed of multiple servers. The terminal 110 is used to obtain the frequency of the excitation signal and the resonance frequency of the motor, and the server 120 is used to process the excitation signal according to the resonance frequency of the motor.

In another embodiment, the above-mentioned signal calibration method can also be performed based on a terminal device that can obtain the frequency of the excitation signal and the resonance frequency of the motor, and then process the excitation signal according to the resonance frequency of the motor.

Considering that this method can be applied to both the terminal and the server, and the specific signal calibration process is the same, this embodiment is applied to the terminal as an example.

As shown in Fig. 2, in one embodiment, a signal calibration method is provided. The signal calibration method specifically includes the following steps S202-S210:

In step S202, the first frequency corresponding to the signal to be processed is acquired, and the resonance frequency of the motor is acquired as the second frequency.

Specifically, the signal to be processed is a voltage signal that requires adjustment of parameters such as frequency and amplitude. The first frequency is the motor frequency pre-specified during the design of the signal to be processed, and the second frequency is the reference resonant frequency used to adjust the frequency of the signal. The desired resonance frequency.

If the first frequency and the second frequency are the same, there is no need to adjust the first frequency of the signal to be processed, and the signal to be processed is the excitation signal required to excite the motor. If the first frequency and the second frequency are inconsistent, the signal to be processed needs to be adjusted so that the signal to be processed corresponding to the first frequency corresponds to the excitation signal required by the motor. Therefore, after acquiring the first frequency and the second frequency, it is also necessary to detect and judge whether the first frequency and the second frequency are consistent. In the case that the first frequency and the second frequency are inconsistent, perform the signal calibration of steps S204-S208 In the step, when the first frequency and the second frequency are the same, directly output the signal to be processed.

Step S204: In a case where the first frequency and the second frequency are not consistent, determine sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency.

Specifically, the sampling coordinate index may be a collection of sampling point coordinates corresponding to several sampling points, may be an array containing sampling point coordinates, or may be a sequence containing sampling point coordinates. According to the first frequency and the second frequency, the sampling coordinate index corresponding to the several sampling points is determined by first determining the several sampling points through the first frequency and the second frequency, and then generating the sampling coordinate index according to the coordinates of the sampling points.

The sampling distance and the number of sampling points can be determined according to the first frequency, the second frequency and the signal to be processed, and then the coordinates of several sampling points are determined in the signal to be processed, and the corresponding sampling coordinate index is generated according to the coordinates of the sampling points.

In one embodiment, the sampling distance between the sampling points is determined according to the ratio of the first frequency and the second frequency; the number of sampling points of the several sampling points is determined according to the signal to be processed; according to the The sampling interval and the number of sampling points determine the coordinates of each sampling point, and the sampling coordinate index is constructed according to the sampling point coordinates.

Among them, the sampling interval is the distance between adjacent sampling points in the signal to be processed, and the number of sampling points is the total number of sampling points in the signal to be processed. After clarifying the sampling interval and the number of sampling points of the signal to be processed, the sampling point coordinates can be determined, and the sampling coordinate index can be constructed according to the collection of the sampling point coordinates.

According to the first frequency and the second frequency, the sampling point coordinates can be calculated, and then the corresponding sampling coordinate index Lcoef_tmp can be generated:

Lcoef_tmp={0,L,2L,3L,...,N}

L=f ₀ /f ₀ ′

Among them, N represents the number of sampling points of the _{signal to be processed, f 0} represents the first frequency corresponding to the signal to be processed, f ₀ 'represents the resonant frequency of the motor, that is, the second frequency; 0, L, 2L, 3L, etc. are the signal to be processed The coordinates of the sampling point. In this embodiment, several sampling points on the signal to be processed are determined by calculation of the first frequency and the second frequency.

The sampling coordinate index determined according to the sampling interval and the number of sampling points may exceed the length of the signal to be processed. Therefore, the sampling coordinate index needs to be clipped.

In an embodiment, length cropping is performed on the sampling coordinate index to obtain the sampling point index coordinates of the target calibration signal.

Among them, the length trimming is to trim the number of sample points of the signal to be processed, which can be to retain only the value part less than the number of sample points of the signal to be processed minus a preset constant. For example, it can only retain the value less than the number of sample points of the signal to be processed minus one Numerical part. The length clipping of the sampling coordinate index can prevent the selection of sampling points from exceeding the length range of the signal to be processed. Length cropping can also crop the number of sampling points according to the required signal length range, which can reduce the amount of subsequent calculations on the coordinates of the sampling points.

Specifically, the sampling coordinate index Lcoef_tmp is length-cut to obtain the sampling point index coordinate Lcoef of the target calibration signal. The sampling point index coordinates Lcoef of the target calibration signal may be a collection of sampling point coordinates corresponding to several sampling points, an array containing sampling point coordinates, or a sequence containing sampling point coordinates.

Step S206, performing preset processing on the sampling coordinate index, and obtaining integer coordinate indexes and decimal coordinate indexes corresponding to the sampling coordinate indexes.

Specifically, the integer coordinate index refers to a collection of the integer part of the coordinates corresponding to a number of sampling points, and it may be an array containing the integer part of the sampling point or a sequence containing the integer part of the sampling point. The decimal coordinate index refers to the collection of the decimal part of the coordinates of a number of sampling points, which can be an array containing the coordinates of the sampling point, or a sequence containing the coordinates of the sampling point. The preset processing is to obtain the integer part and the decimal part of the coordinate of the sampling point in the sampling coordinate index according to the preset algorithm, and then generate the integer coordinate index and the decimal coordinate index corresponding to the sampling coordinate index.

In a specific embodiment, the process of obtaining the integer coordinate index and the decimal coordinate index is described in detail.

First, the sampling coordinate index Lcoef_tmp is rounded to obtain the integer part Intcoef_tmp of the sampling point coordinate, and then the decimal part can be determined according to the sampling point coordinate and the integer part, and then the corresponding integer coordinate index Intcoef and the decimal coordinate index Fracoef are generated.

In one embodiment, rounding is performed on each sampling point coordinate included in the sampling coordinate index, and the integer part Intcoef_tmp of each sampling point coordinate is obtained and then cropped to generate an integer coordinate index Intcoef; and each sampling point index coordinate is obtained The difference between Lcoef and the corresponding integer coordinate index Intcoef generates the decimal coordinate index Fracoef.

Among them, the rounding process is to obtain the integer part of the sampling point coordinate in the sampling coordinate index. For example, the sampling point coordinate is 5.3, and the rounding process for the sampling point can be [5.3]=5 to obtain the integer part of the sampling point coordinate 5. . Obtain the difference between the sampling point coordinates and the corresponding integer part to obtain the decimal part of the sampling point coordinates, that is, the decimal part = the sampling point coordinates-the integer part, and then the corresponding integer coordinates are generated according to the integer part and the decimal part of each sampling point coordinate The index and the decimal coordinate index can be subsequently processed according to the integer coordinate index and the decimal coordinate index to process the signal to be processed.

Step S208: Process the signal to be processed according to the integer coordinate index and the decimal coordinate index to generate and output a target calibration signal.

Specifically, the target calibration signal is a signal adjusted on the basis of the signal to be processed, and can be used as the final motor excitation signal.

The processing of the signal to be processed according to the integer coordinate index and the decimal coordinate index may be interpolation processing of the signal to be processed.

In an embodiment, interpolation processing is performed on the signal to be processed according to a preset interpolation formula, the integer coordinate index and the decimal coordinate index.

The preset interpolation formula may be linear interpolation formula, Lagrangian interpolation formula, Newton interpolation formula, and/or Emilt interpolation formula, but is not limited to a certain interpolation formula. Perform interpolation processing on the signal to be processed according to the preset interpolation formula to obtain the target calibration signal.

Specifically, the preset interpolation formula may be a linear interpolation formula, and the signal to be processed is interpolated according to the linear interpolation formula to obtain the target calibration signal.

In one embodiment, according to the linear interpolation formula

Y=Fracoef×(X<Intcoef+k ₁ >-X<Intcoef+k ₂ >)+X<Intcoef+k ₃ >

Calculate the signal to be processed, where X is the signal to be processed, Intcoef is the integer coordinate index, Fracoef is the decimal coordinate index, k ₁ , k ₂ , and k ₃ are constant terms and k ₂ =k ₃ , X<Intcoef+k _i > (i = 1,2,3) are the coordinates in an integer index Intcoef + k _i in the signal to be processed (i = 1,2,3), Y is a target calibration signal. Among them, a typical interpolation method is linear interpolation between adjacent points. In this case, k ₁ =2 and k ₂ =k ₃ =1.

Specifically, the integer part corresponding to the sampling point index coordinate Lcoef is a, the difference _{between the signal to be processed corresponding to the coordinates of a+k 1} sampling point and the signal to be processed corresponding to the coordinates of a+k ₂ sampling point is calculated, and the difference is multiplied by The above is the product of the fractional part in the decimal coordinate index corresponding to the obtained integer coordinate a, and the sum of the product and the _{signal to be processed corresponding to the a+k 3} sampling point coordinate is obtained as the target calibration signal at the sampling point index coordinate Lcoef . Traverse the integer coordinate index and decimal coordinate index corresponding to all sampling points to perform interpolation processing on the signal to be processed to obtain the target calibration signal. In this embodiment, the target calibration signal is obtained by calculation with a linear interpolation formula.

The target calibration signal is calculated on the basis of the signal to be processed, and is used as a voltage signal for the final excitation of the motor. Therefore, after the target calibration signal is generated, the motor is controlled to vibrate according to the target calibration signal, so that the frequency of the motor to which the target calibration signal is adapted is close to the second frequency, which improves the consistency of the vibration effect corresponding to the excitation signal and improves the user experience.

In one embodiment, the motor is controlled to vibrate, and the step of obtaining the resonant frequency of the motor as the second frequency is performed; after the target calibration signal is generated and output, the motor is controlled to vibrate according to the target calibration signal .

Among them, the target calibration signal is used as an excitation signal to excite the motor to control the vibration of the motor. The actual resonance frequency of the motor under the target calibration signal is periodically detected. If the actual resonance frequency is different from the second frequency, the target calibration signal will be recalculated. If the actual resonance frequency is the same as the second frequency, the target calibration signal will continue to be used to excite the motor.

As shown in FIG. 3, in one embodiment, after the step of obtaining the resonant frequency of the motor as the second frequency, the method further includes: judging whether the first frequency and the second frequency are consistent; In the case where it is inconsistent with the second frequency, step S204 is performed: determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency. In the case where the first frequency and the second frequency are consistent, step S208 is performed: generating and outputting a target calibration signal.

Wherein, when the first frequency and the second frequency are inconsistent, the calculation to determine the sampling coordinate index is performed; when the first frequency and the second frequency are consistent, the signal to be processed is directly output as the target calibration signal. In this embodiment, by judging whether the first frequency and the second frequency are consistent, to avoid unnecessary calculations and adjustments when the first frequency and the second frequency are consistent.

As shown in Figure 4, a signal calibration device is proposed, and the device includes:

The obtaining module 402 is configured to obtain the first frequency corresponding to the signal to be processed, and obtain the resonant frequency of the motor as the second frequency;

The determining module 404 is configured to determine sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency when the first frequency and the second frequency are inconsistent;

The calculation module 406 is configured to perform preset processing on the sampling coordinate index, and obtain the integer coordinate index and the decimal coordinate index corresponding to the sampling coordinate index;

The generating module 408 is configured to process the signal to be processed according to the integer coordinate index and the decimal coordinate index to generate and output a target calibration signal.

As shown in FIG. 5, in one embodiment, the device further includes: an excitation module 409, configured to control the motor to vibrate and execute the step of obtaining the resonant frequency of the motor as the second frequency; The target calibration signal controls the motor to vibrate.

As shown in FIG. 6, in an embodiment, the determining module 404 further includes: a first determining unit, configured to determine the sampling between the sampling points according to the ratio of the first frequency and the second frequency Spacing; determine the number of sampling points of the plurality of sampling points according to the signal to be processed; a second determining unit for determining the coordinates of each sampling point according to the sampling interval and the number of sampling points, and according to the sampling point coordinates Build the sampling coordinate index.

As shown in FIG. 7, in one embodiment, the calculation module 406 further includes: a preprocessing unit, configured to perform length-cutting on the sampling coordinate index to obtain the sampling point index coordinates of the target calibration signal.

As shown in FIG. 7, in an embodiment, the calculation module 406 further includes: a first calculation unit, configured to perform rounding processing on the coordinates of each sampling point contained in the sampling coordinate index, and obtain the coordinates of each sampling point. The integer part is used for length-cutting the integer part to generate an integer coordinate index; the second calculation unit is used for obtaining the difference between the sampling point index coordinate and the integer coordinate index to generate a decimal coordinate index.

In one embodiment, the generating module 408 further includes: an interpolation processing unit, configured to perform interpolation processing on the signal to be processed according to a preset interpolation formula, the integer coordinate index, and the decimal coordinate index.

In an embodiment, the acquiring unit 402 further includes: a judging unit for judging whether the first frequency and the second frequency are consistent; in the case where the first frequency and the second frequency are not consistent Execute the step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency. In the case where the first frequency and the second frequency are the same, the step of generating and outputting a target calibration signal is performed.

Fig. 8 shows an internal structure diagram of a computer device in an embodiment. The computer device may specifically be a terminal or a server. As shown in Figure 8, the computer device includes a processor, a memory, and a network interface connected through a system bus. Among them, the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system, and may also store a computer program. When the computer program is executed by the processor, the processor can implement a signal calibration method. A computer program may also be stored in the internal memory, and when the computer program is executed by the processor, the processor can execute the signal calibration method. Those skilled in the art can understand that the structure shown in FIG. 8 is only a block diagram of part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may Including more or fewer parts than shown in the figure, or combining some parts, or having a different arrangement of parts.

In one embodiment, a computer device is provided, including a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the following steps: Process the first frequency corresponding to the signal, and obtain the resonant frequency of the motor as the second frequency; in the case where the first frequency and the second frequency are inconsistent, determine several frequencies based on the first frequency and the second frequency The sampling coordinate index corresponding to the sampling point; performing preset processing on the sampling coordinate index to obtain the integer coordinate index and the decimal coordinate index corresponding to the sampling coordinate index; according to a pair of the integer coordinate index and the decimal coordinate index The signal to be processed is processed to generate and output a target calibration signal.

In one embodiment, the method further includes: controlling the motor to vibrate, and performing the step of obtaining the resonant frequency of the motor as the second frequency; after the step of generating and outputting a target calibration signal, further including: The motor is controlled to vibrate according to the target calibration signal.

In one embodiment, a computer-readable storage medium is provided that stores a computer program, and when the computer program is executed by a processor, the processor executes the following steps: obtaining a first frequency corresponding to a signal to be processed, Acquiring the resonance frequency of the motor as the second frequency; in the case where the first frequency and the second frequency are inconsistent, determining the sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency; Performing preset processing on the sampling coordinate index to obtain integer coordinate indexes and decimal coordinate indexes corresponding to the sampling coordinate index; processing the signal to be processed according to the integer coordinate index and the decimal coordinate index, Generate and output the target calibration signal.

Perform rounding processing on each sampling point coordinate contained in the sampling coordinate index, obtain the integer part of each sampling point coordinate to generate an integer coordinate index; obtain the difference between each sampling point coordinate and the corresponding integer part to generate a decimal coordinate index.

In one embodiment, after the step of obtaining the resonant frequency corresponding to the device to be calibrated as the second frequency, the method further includes: judging whether the first frequency and the second frequency are consistent; In the case where the second frequencies are inconsistent, the step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency is performed. In the case where the first frequency and the second frequency are the same, the step of generating and outputting a target calibration signal is performed.

Using the signal calibration method, device, equipment and storage medium of the present invention, first obtain the first frequency corresponding to the signal to be processed, and obtain the resonant frequency of the motor as the second frequency; when the first frequency and the second frequency are inconsistent, Determine the sampling coordinate index corresponding to several sampling points according to the first frequency and the second frequency; then perform preset processing on the sampling coordinate index to obtain the integer coordinate index and the decimal coordinate index corresponding to the sampling coordinate index; finally according to the integer coordinate index And the decimal coordinate index to process the signal to be processed to generate and output a target calibration signal. The present invention calibrates the first frequency of the signal to be processed according to the second frequency, so that the frequency when the generated target calibration signal excites the motor is matched with the second frequency, and the generated target calibration signal is adapted to the motor. After adopting the signal calibration method, device, equipment and storage medium of the present invention, the difference in vibration effect caused by the performance or parameter difference of different motor monomers can be reduced, the consistency of the vibration effect corresponding to the excitation signal is improved, and the user experience is improved .

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through a computer program. The program can be stored in a non-volatile computer readable storage medium. Here, when the program is executed, it may include the procedures of the above-mentioned method embodiments. Wherein, any reference to memory, storage, database, or other media used in the embodiments provided in this application may include non-volatile and/or volatile memory. Non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not a limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synch l) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered as the range described in this specification.

The above-mentioned embodiments only express several implementation manners of the present application, and their descriptions are more specific and detailed, but they should not be understood as a limitation to the scope of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

A signal calibration method, characterized in that the method includes:

Acquiring the first frequency corresponding to the signal to be processed, and acquiring the resonant frequency of the motor as the second frequency;

In a case where the first frequency and the second frequency are not consistent, determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency;

Performing preset processing on the sampling coordinate index, and obtaining integer coordinate indexes and decimal coordinate indexes corresponding to the sampling coordinate index;

The signal to be processed is processed according to the integer coordinate index and the decimal coordinate index, and a target calibration signal is generated and output.
The method according to claim 1, wherein the method further comprises:

Controlling the motor to vibrate, and performing the step of obtaining the resonant frequency of the motor as the second frequency;

After the step of generating and outputting the target calibration signal, the method further includes:

The motor is controlled to vibrate according to the target calibration signal.
The method according to claim 1, wherein the step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency further comprises:

Determining the sampling interval between the sampling points according to the ratio of the first frequency and the second frequency;

Determining the number of sampling points of the several sampling points according to the signal to be processed;

The coordinates of each sampling point are determined according to the sampling interval and the number of sampling points, and a sampling coordinate index is constructed according to the sampling point coordinates.
The method according to claim 1, wherein after the step of determining sampling coordinate indexes corresponding to a plurality of sampling points according to the first frequency and the second frequency, the method further comprises:

The sampling coordinate index is length-cut to obtain the sampling point index coordinates of the target calibration signal.
The method according to claim 3, wherein after the step of constructing a sampling coordinate index according to the sampling point coordinates, the method further comprises:

Performing rounding processing on each sampling point coordinate included in the sampling coordinate index, obtaining the integer part of each sampling point coordinate, and performing length clipping on the integer part to generate an integer coordinate index;

Obtaining the difference between the sampling point index coordinate and the integer coordinate index to generate a decimal coordinate index.
The method according to claim 1, wherein the step of processing the signal to be processed according to the integer coordinate index and the decimal coordinate index further comprises:

Perform interpolation processing on the signal to be processed according to a preset interpolation formula, the integer coordinate index and the decimal coordinate index.
The method according to claim 6, wherein the step of performing interpolation processing on the signal to be processed according to a preset interpolation formula, the integer coordinate index, and the decimal coordinate index, further comprises:

According to the formula

Y=Fracoef×(X<Intcoef+k 1 >-X<Intcoef+k 2 >)+X<Intcoef+k 3 >

Calculate the signal to be processed, where X is the signal to be processed, Intcoef is the integer coordinate index, Fracoef is the decimal coordinate index, k 1 , k 2 , and k 3 are constant terms and k 2 =k 3 , X<Intcoef+k i> (i = 1,2,3) are the coordinates in an integer index Intcoef + k i in the signal to be processed (i = 1,2,3), Y is a target calibration signal.
The method according to claim 1, wherein after the step of obtaining the resonant frequency corresponding to the device to be calibrated as the second frequency, the method further comprises:

Judging whether the first frequency and the second frequency are consistent;

In a case where the first frequency and the second frequency are not consistent, performing the step of determining sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency;

In the case where the first frequency and the second frequency are the same, the step of generating and outputting a target calibration signal is performed.
A signal calibration device, characterized in that the device comprises:

An obtaining module, configured to obtain the first frequency corresponding to the signal to be processed, and obtain the resonant frequency of the motor as the second frequency;

A determining module, configured to determine sampling coordinate indexes corresponding to several sampling points according to the first frequency and the second frequency when the first frequency and the second frequency are inconsistent;

A calculation module, configured to perform preset processing on the sampling coordinate index, and obtain the integer coordinate index and the decimal coordinate index corresponding to the sampling coordinate index;

The generating module is configured to process the signal to be processed according to the integer coordinate index and the decimal coordinate index to generate and output a target calibration signal.
A computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the processor executes the steps of the method according to any one of claims 1 to 8.
A computer device, comprising a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the method according to any one of claims 1 to A step of.