Loudspeaker system frequency response curve simulation method and device, electronic equipment and storage medium

Abstract

The invention discloses a loudspeaker system frequency response curve simulation method and device, electronic equipment and a storage medium, and the method comprises the steps: carrying out the simulation of a nonlinear parameter of a loudspeaker, and obtaining a force-electricity coupling factor function, an equivalent stiffness coefficient function and an equivalent resistance function; a force-electricity coupling factor function, an equivalent stiffness coefficient function and an equivalent resistance function which are obtained through simulation are used for correcting a stress equation, a Young modulus and a damping factor, and the corrected stress equation, the Young modulus and the damping factor are used for simulating the loudspeaker system to obtain a frequency response curve of the loudspeaker system. The corrected stress equation, Young modulus and damping factor are fused with the nonlinear characteristics of the loudspeaker system, and the influence of the nonlinear characteristics on a frequency response curve is considered; a frequency response curve obtained by simulating the loudspeaker system by adopting the corrected stress equation, the Young modulus and the damping factor is closer to a frequency response curve obtained by an actual test and is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of loudspeakers, and in particular to a method, device, electronic device and storage medium for simulating a frequency response curve of a loudspeaker system. Background Art

[0002] The frequency response curve of a loudspeaker represents the sound pressure level of the loudspeaker under different frequency signals, reflecting the gain or attenuation characteristics of the loudspeaker for each frequency signal. Simulating the frequency response curve of a loudspeaker is one of the commonly used design verification methods in the loudspeaker design stage.

[0003] At present, the finite element simulation method is usually used to simulate the frequency response curve of the loudspeaker. It mainly sets various parameters in the simulation software before performing frequency response curve simulation. For example, the electromechanical coupling factor BL in the force equation of the loudspeaker is set, the Young's modulus E of components such as the surround and support, and the damping factor R of each component of the vibration system are set. The above-mentioned electromechanical coupling factor BL, Young's modulus E, and damping factor R are usually constant or linearly changing. In fact, when the loudspeaker is working, as the voice coil moves to drive the vibration system, the electromechanical coupling factor BL of the voice coil, the Young's modulus E of components such as the surround and support, and the damping factor R are not linear. This results in the simulation process not taking into account the nonlinear characteristics of the loudspeaker, resulting in a large difference between the frequency response curve obtained by simulation and the frequency response curve obtained by actual test. Summary of the Invention

[0004] The present invention provides a method, device, electronic device and storage medium for simulating the frequency response curve of a loudspeaker system, so as to solve the problem that setting constants or linear parameters to simulate the frequency response curve of a loudspeaker system leads to a large difference between the simulation results and the actual measured results.

[0005] In a first aspect, the present invention provides a method for simulating a frequency response curve of a loudspeaker system, comprising:

[0006] Simulating the nonlinear parameters of the loudspeaker system to obtain a force-electric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness coefficient function of each elastic component in the vibration system, and an equivalent force resistance function of the vibration system;

[0007] Modifying the force equation of the loudspeaker, the Young's modulus and the damping factor of the elastic component based on the electromechanical coupling factor function, the equivalent stiffness coefficient function and the equivalent force resistance function;

[0008] The speaker system is simulated using the modified force equation, Young's modulus, and damping factor to obtain a frequency response curve of the speaker system.

[0009] In a second aspect, the present invention provides a device for simulating a frequency response curve of a loudspeaker system, comprising:

[0010] a nonlinear parameter simulation module for simulating the nonlinear parameters of the loudspeaker system to obtain a force-electric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness coefficient function of each elastic component in the loudspeaker vibration system, and an equivalent force-resistance function of the vibration system;

[0011] a parameter correction module, configured to correct the force equation of the speaker system, the Young's modulus and the damping factor of the elastic component based on the electromechanical coupling factor function, the equivalent stiffness coefficient function and the equivalent force resistance function;

[0012] The frequency response curve simulation module is used to simulate the loudspeaker system using the modified force equation, Young's modulus and damping factor to obtain the frequency response curve of the loudspeaker system.

[0013] In a third aspect, the present invention provides an electronic device, comprising:

[0014] at least one processor; and

[0015] a memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for simulating a frequency response curve of a loudspeaker system according to the first aspect of the present invention.

[0017] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a processor to implement the loudspeaker system frequency response curve simulation method described in the first aspect of the present invention when executed.

[0018] The present invention first simulates the nonlinear parameters of the loudspeaker system to obtain a force-electric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness coefficient function of elastic components such as loudspeaker supports and surrounds in the loudspeaker vibration system, and an equivalent force resistance function of the vibration system. The force equation of the loudspeaker system, Young's modulus, and damping factor of the elastic components are further corrected using the force-electric coupling factor function, the equivalent stiffness coefficient function, and the equivalent force resistance function. Finally, the loudspeaker system is simulated using the corrected force equation, Young's modulus, and damping factor to obtain a frequency response curve of the loudspeaker system. Due to the simulation of the nonlinear parameters of the loudspeaker system, the force-electric coupling factor function, the equivalent stiffness coefficient function of elastic components such as loudspeakers and surrounds in the vibration system, and the equivalent force resistance function of the vibration system have nonlinear characteristics. Therefore, the corrected force equation, Young's modulus, and damping factor integrate the nonlinear characteristics of the loudspeaker system and take into account the influence of the nonlinear characteristics on the frequency response curve. The frequency response curve obtained by simulating the loudspeaker system using the corrected force equation, Young's modulus, and damping factor is closer to the frequency response curve obtained by actual testing and is more accurate.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a flow chart of a method for simulating a frequency response curve of a loudspeaker system provided in the first embodiment of the present invention;

[0022] Figure 2 is a graph of the function of the electromechanical coupling factor;

[0023] Figure 3 It is a graph of the equivalent stiffness coefficient function of the speaker support, speaker surround and speaker;

[0024] Figure 4 This is a flow chart of a method for simulating a frequency response curve of a loudspeaker system provided in the second embodiment of the present invention;

[0025] Figure 5 It is a comparison chart of the measured frequency response curves without considering nonlinear characteristics and with considering nonlinear characteristics;

[0026] Figure 6 1 is a schematic structural diagram of a device for simulating a frequency response curve of a loudspeaker system provided in a third embodiment of the present invention;

[0027] Figure 7 It is a structural diagram of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0029] Example 1

[0030] Figure 1 This is a flow chart of a method for simulating a frequency response curve of a loudspeaker system provided in the first embodiment of the present invention. This embodiment is applicable to the case of simulating the frequency response curve of a loudspeaker system. The method can be executed by a loudspeaker system frequency response curve simulation device. The loudspeaker system frequency response curve simulation device can be implemented in the form of hardware and / or software and can be configured in an electronic device. Figure 1 As shown, the speaker system frequency response curve simulation method includes:

[0031] S101 , simulating the nonlinear parameters of the loudspeaker system to obtain a force-electric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness coefficient function of each elastic component in the vibration system, and an equivalent force resistance function of the vibration system.

[0032] In this embodiment, the vibration system of the loudspeaker system may include a voice coil, a support, a surround, a dust cover, etc. Of course, the number of the above components in the vibration system of different types of loudspeakers may increase or decrease. This embodiment mainly considers the situation where the vibration system includes a voice coil, a support, a surround, and a dust cover. During nonlinear simulation, the nonlinear parameters are mainly simulated, where the nonlinear parameters may include the electromechanical coupling factor function of the voice coil, the equivalent stiffness coefficient function of each elastic component in the vibration system, and the equivalent resistance function of the vibration system. Among them, the support and the surround are elastic components. In addition, in the frequency response curve test environment of the loudspeaker system, a passive radiator may also be set on the test box where the loudspeaker is installed. As part of the loudspeaker system, the surround of the passive radiator also needs to be subjected to nonlinear simulation.

[0033] The electromechanical coupling factor function can be a function that represents the change of force on the voice coil in the magnetic circuit system with displacement. Due to the inhomogeneity of the magnetic field in the magnetic circuit system, the electromechanical coupling factor is a dynamic parameter and is nonlinear, such as Figure 2 The figure shows the function of electromechanical coupling factor. Figure 2 It can be seen that when the displacement of the horizontal axis is 0, the voice coil is at the position where the magnetic field is the strongest in the magnetic circuit system, the electromechanical coupling factor BL of the voice coil is the largest, and the electromagnetic force acting on the voice coil is also the largest.

[0034] The equivalent stiffness coefficient function can be a function that represents the change in stiffness (rigidity) of elastic components such as speaker supports, speaker surrounds, and passive radiator surrounds in a speaker system as the voice coil displacement increases. When the voice coil displacement increases, the speaker supports, speaker surrounds, and passive radiator surrounds driven by the voice coil undergo nonlinear deformation. As the deformation increases, the stiffness increases, presenting nonlinear characteristics. Figure 3 The graph shows the equivalent stiffness coefficient function of the support, surround and loudspeaker. Figure 3 It can be seen that when the displacement deviates more from 0, the stiffness increases sharply, showing nonlinear characteristics.

[0035] The equivalent resistance function may be a function indicating that the mechanical damping of the vibration system of the loudspeaker changes with the speed of the voice coil, and the function also exhibits nonlinear characteristics.

[0036] The above-mentioned nonlinear simulation of the voice coil, speaker support, speaker surround and passive radiator surround can refer to the existing nonlinear simulation method of the voice coil, speaker support, speaker surround and passive radiator surround to obtain the electromechanical coupling factor function of the voice coil, the equivalent stiffness coefficient function of each elastic component in the vibration system and the equivalent force resistance function of the vibration system. This embodiment does not limit the nonlinear simulation method.

[0037] S102. Modify the force equation of the loudspeaker system, the Young's modulus and the damping factor of the elastic component based on the electromechanical coupling factor function, the equivalent stiffness coefficient function and the equivalent force resistance function.

[0038] Specifically, for the force equation, the electrical impedance and the operating voltage of the speaker can be obtained, and the force equation can be modified using the electrical impedance and the operating voltage as constants and the force-electric coupling factor function of the voice coil as a variable.

[0039] For the Young's modulus of elastic components such as speaker supports, speaker surrounds, and passive radiator surrounds, the Young's modulus and equivalent stiffness coefficient when the displacement is 0 are first obtained. The Young's modulus and equivalent stiffness coefficient when the displacement is 0 are used as constants, and the equivalent stiffness coefficient function is used as a variable to correct the Young's modulus of each elastic component. This makes the Young's modulus positively correlated with the equivalent stiffness coefficient function, that is, the Young's modulus also exhibits nonlinear characteristics consistent with the equivalent stiffness coefficient function.

[0040] For the damping factor of the speaker support and speaker surround, the damping factor when the displacement is 0 and the equivalent effective resistance of the speaker are first obtained. The damping factor when the displacement is 0 and the equivalent effective resistance of the speaker are used as constants, and the equivalent effective resistance function is used as a variable to correct the damping factor of the speaker support and speaker surround, so that the damping factor is positively correlated with the equivalent effective resistance function, that is, the Young's modulus also presents nonlinear characteristics consistent with the equivalent effective resistance function.

[0041] S103. Use the modified force equation, Young's modulus, and damping factor to simulate the loudspeaker system to obtain a frequency response curve of the loudspeaker system.

[0042] In this embodiment, the frequency response curve can be simulated in a speaker system simulation application. For example, the material, structural parameters, modified force equation, Young's modulus, damping factor, etc. of each speaker component can be input in the interactive interface. After inputting the parameters, multiple frequency values ​​can be selected or input in the speaker system simulation application to simulate the sound pressure levels of the speaker system under signals of different frequencies. The frequency response curve can be fitted by the sound pressure levels of multiple frequencies to obtain a simulated frequency response curve.

[0043] In an embodiment of the present invention, the nonlinear parameters of a loudspeaker system are first simulated to obtain a mechanoelectric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness function of elastic components such as the loudspeaker support and surround in the vibration system, and an equivalent force resistance function of the vibration system. The mechanoelectric coupling factor function, the equivalent stiffness function, and the equivalent force resistance function are then used to correct the force equation of the loudspeaker system, Young's modulus, and damping factor of the elastic components. Finally, the loudspeaker system is simulated using the corrected force equation, Young's modulus, and damping factor to obtain a frequency response curve of the loudspeaker system. Due to the simulation of the nonlinear parameters of the loudspeaker system, the mechanoelectric coupling factor function, the equivalent stiffness function of elastic components such as the loudspeaker support and surround in the vibration system, and the equivalent force resistance function of the vibration system have nonlinear characteristics. Therefore, the corrected force equation, Young's modulus, and damping factor incorporate the nonlinear characteristics of the loudspeaker system and take into account the impact of the nonlinear characteristics on the frequency response curve. Therefore, the frequency response curve obtained by simulating the loudspeaker system using the corrected force equation, Young's modulus, and damping factor is closer to the frequency response curve obtained by actual testing and more accurate.

[0044] Example 2

[0045] Figure 4 This is a flow chart of a method for simulating a frequency response curve of a loudspeaker system provided in the second embodiment of the present invention. This embodiment of the present invention is optimized based on the above-mentioned first embodiment. Figure 4 As shown, the speaker system frequency response curve simulation method includes:

[0046] S401. Perform nonlinear simulation on the voice coil, the loudspeaker support, the loudspeaker surround, and the passive radiator surround to obtain the electromechanical coupling factor function of the voice coil, the equivalent stiffness coefficient function of the loudspeaker support, the equivalent stiffness coefficient function of the loudspeaker surround, the equivalent stiffness coefficient function of the passive radiator surround, the equivalent stiffness coefficient function of the vibration system, and the equivalent force resistance function.

[0047] In an embodiment of the present invention, a simulation application can be used to perform nonlinear simulation of the voice coil, speaker support, speaker surround, and passive radiator surround. For example, the simulation application can be COMSOL software, i.e., COMSOL Multiphysics software, which is a widely used commercial software for multi-physics field modeling and simulation. It achieves highly accurate numerical simulation with efficient computing performance and outstanding multi-field bidirectional direct coupling analysis capabilities. It has a wide range of applications in acoustics, optical structural mechanics, transmission phenomena, wave propagation and other fields. Of course, the simulation application can also be ANSYS, etc. In actual applications, the electromechanical coupling factor function, equivalent stiffness coefficient function, and equivalent force resistance function can also be obtained through testing.

[0048] Since the electromechanical coupling factor function represents the function of the force on the voice coil in the magnetic circuit system of the loudspeaker system as it changes with displacement, during simulation, the mechanical structure, magnet, magnetic material, voice coil, magnet direction, etc. of the loudspeaker system's magnetic circuit system can be defined, the voice coil current can be set, and the force on the voice coil at different displacements in the magnetic circuit system can be simulated using a simulation application. The electromechanical coupling factor function BL(x) can be fitted based on the force. In one example, the expression of the electromechanical coupling factor function BL(x) is:

[0049]

[0050] Where F(x) is the force on the voice coil when it is displaced by x, and i is the current in the voice coil.

[0051] The equivalent stiffness coefficient function can be a function that represents the change in stiffness (rigidity) of elastic components such as speaker supports, speaker surrounds, and passive radiator surrounds in the speaker system as the voice coil displacement changes. During simulation, the materials of elastic components such as speaker supports, speaker surrounds, and passive radiator surrounds can be defined in the simulation system, the fixed points (mechanical structure) of the speaker supports, speaker surrounds, and speaker basin frame, and the fixed points of the passive radiator and the test box can be set, and the shape and structure of the speaker supports, speaker surrounds, and passive radiator surrounds can be imported. During simulation, the force F applied to the voice coil is set, the displacement x of the voice coil when the force F is applied is simulated, and the ratio of the force F to the displacement x is calculated as the equivalent stiffness coefficient.

[0052] For example, the equivalent stiffness function of the entire vibration system of the loudspeaker (including the support and surround) is simulated. For example, multiple forces F are applied to the voice coil, and the displacement x of the voice coil is simulated. The equivalent stiffness function of the vibration system is calculated based on the voice coil displacement corresponding to each force F as follows:

[0053]

[0054] x represents the displacement of the voice coil when a force F(x) is applied to the voice coil without removing the speaker support and speaker surround.

[0055] Next, the speaker support can be removed and the above simulation process can be repeated to perform nonlinear simulation on the speaker surround. The equivalent stiffness coefficient function of the speaker surround is obtained as follows:

[0056]

[0057] x_surround represents the displacement of the voice coil when a force F(x) is applied to the voice coil with the speaker support removed.

[0058] Equivalent stiffness coefficient function K of loudspeaker support ms_spider (x) are as follows:

[0059]

[0060] x_sipder represents the displacement of the voice coil when the force F(x) is applied to the voice coil after the speaker surround is removed from the speaker system. Of course, after obtaining the equivalent stiffness coefficient function of the vibration system and the equivalent stiffness coefficient function of the speaker surround, the equivalent stiffness coefficient function K of the speaker support can be directly obtained by taking the difference between the equivalent stiffness coefficient function of the vibration system and the equivalent stiffness coefficient function of the speaker surround. ms_spider (x).

[0061] Similarly, for the passive radiator surround, since there is no voice coil, the structural model of the passive radiator surround can be configured in the simulation system, such as the shape structure of the passive radiator surround, the connection point between the passive radiator surround and the test box, and the material properties of the passive radiator surround can be defined, as well as the external force field excitation (such as external vibration or sound pressure excitation). In this way, the displacement of the passive radiator surround is simulated, and the maximum displacement of the passive radiator surround under multiple external force fields F is obtained. The equivalent stiffness coefficient function K of the passive radiator surround is fitted through multiple external force fields F and the maximum displacement. ms_pr The expression of (x) is as follows:

[0062]

[0063] Wherein, F_surround(x) represents the force applied to the passive radiator, and x_max represents the maximum displacement of the passive radiator under the action of the force F_surround(x).

[0064] The equivalent resistance function is a function that represents the change of the mechanical damping of the vibration system of the loudspeaker system with the movement speed of the voice coil. The equivalent resistance of the vibration system can be simulated by the electrical-mechanical-acoustic analogy method. Specifically, an equivalent circuit model can be constructed according to the structural parameters of the loudspeaker and the test box. For example, the equivalent circuit elements corresponding to the loudspeaker system and the connection relationship of each equivalent circuit element are determined, and the equivalent circuit model is obtained by connecting each equivalent circuit element based on the connection relationship. The equivalent circuit model is an equivalent model of the electric-mechanical-acoustic multi-physics field. In terms of electricity, the voice coil impedance Re, inductance Le, electromechanical coupling factor BL, etc. are defined to form an equivalent circuit. In terms of mechanics, the mass M of the entire vibration system is defined ms , the compliance of the speaker support and the speaker surround C ms and the force resistance R ms In terms of acoustics, the conversion between sound pressure level and displacement is defined. After defining the excitation, the voltage and voice coil velocity are extracted, and the equivalent effective impedance function is fitted. For details, please refer to the equivalent effective impedance simulation method of the speaker in multi-physics field coupling simulation tools such as COMSOL or ANSYS, which will not be described in detail here.

[0065] In one embodiment, the equivalent resistance function R ms The expression of (v) is:

[0066] R ms (v) = R ms 0+a1v+……+a n v n ;

[0067] R ms 0 is the static mechanical resistance when the voice coil speed is equal to 0, a1, a2...a nis the nonlinear coefficient, v is the voice coil velocity, n is a natural number greater than or equal to 2, where R ms 0+a1v is the linear characteristic part, a n v n For the nonlinear part, usually, n can be 2.

[0068] S402: Use the electromechanical coupling factor function BL(x) to modify the force equation of the loudspeaker system.

[0069] In one example, the modified force equation is:

[0070]

[0071] F is the force on the voice coil, x is the displacement of the voice coil, V0 is the voltage on the voice coil, v is the velocity of the voice coil, and Zb is the electrical impedance of the speaker system. From the above expression, it can be seen that the force equation takes into account the nonlinear characteristics of the force on the voice coil in the magnetic circuit system, which makes the force equation also have nonlinear characteristics.

[0072] S403: Use the equivalent stiffness coefficient function of the loudspeaker support and the equivalent stiffness coefficient function of the loudspeaker surround to correct the Young's modulus of the loudspeaker support and the Young's modulus of the loudspeaker surround.

[0073] In one example, the Young's modulus E of the speaker support after correction is spider (x) is:

[0074]

[0075] E spider (0) is the Young's modulus of the loudspeaker support when the displacement is equal to 0, K ms_spider (0) is the equivalent stiffness coefficient of the loudspeaker support when the displacement is equal to 0;

[0076] Corrected Young's modulus E of the speaker surround surround (x) is:

[0077]

[0078] E surround (0) is the Young's modulus of the loudspeaker surround when the displacement is equal to 0, K ms_surround (0) is the equivalent stiffness coefficient of the loudspeaker surround when the displacement is equal to 0.

[0079] In another example, the equivalent stiffness coefficient function Kms(x) of the vibration system can also be directly used to correct the Young's modulus of the speaker support and the Young's modulus of the speaker surround. For example, the corrected Young's modulus of the speaker support is E spider (x) is:

[0080]

[0081] E spider (0) is the Young's modulus of the loudspeaker support when the displacement is equal to 0, K ms (0) is the equivalent stiffness coefficient of the vibration system when the displacement is equal to 0;

[0082] Corrected Young's modulus E of the speaker surround surround (x) is:

[0083]

[0084] E surround (0) is the Young's modulus of the loudspeaker surround when the displacement is equal to 0.

[0085] From the above expressions of the corrected Young's modulus of the speaker support and speaker surround, it can be seen that the corrected Young's modulus of the speaker support and speaker surround takes into account the nonlinear characteristics of the equivalent stiffness coefficient of the speaker support and speaker surround, so that the corrected Young's modulus of the speaker support and speaker surround has nonlinear characteristics consistent with the equivalent stiffness coefficient.

[0086] S404. Correct the Young's modulus of the passive radiator fold using the equivalent stiffness coefficient function of the passive radiator fold.

[0087] In one example, the Young's modulus E of the passive radiator surround after modification is surround_pr (x) is:

[0088]

[0089] E surround_pr (0) is the Young's modulus of the passive radiator surround when the displacement is equal to 0, K ms_surround_pr (0) is the equivalent stiffness coefficient of the passive radiator fold when the displacement is equal to 0.

[0090] From the above-mentioned expression of the Young's modulus of the passive radiator surround after correction, it can be seen that since the nonlinear characteristics of the equivalent stiffness coefficient of the passive radiator surround are taken into account, the Young's modulus of the passive radiator surround after correction has nonlinear characteristics consistent with the equivalent stiffness coefficient.

[0091] S405: Use the equivalent force and damping function of the vibration system to correct the damping factors of the loudspeaker support and the loudspeaker surround.

[0092] In one example, the damping factor R of the modified speaker support is spider (v) is:

[0093]

[0094] R spider(0) is the damping factor of the loudspeaker support when the velocity is equal to 0, R ms (0) is the equivalent resistance when the speed is equal to 0;

[0095] The damping factor R of the speaker surround after correction surround (v) is:

[0096]

[0097] R surround (0) is the damping factor of the loudspeaker surround when the velocity is equal to 0.

[0098] It can be seen from the above expression of the modified damping factor that, since the nonlinear characteristics of the equivalent effective resistance are taken into account, the modified damping factor has a nonlinear characteristic consistent with the equivalent effective resistance.

[0099] S406 , inputting the modified force equation, Young's modulus, and damping factor into the interactive interface of the frequency response curve simulation application program.

[0100] After obtaining the revised force equation, Young's modulus, and damping factor, the revised force equation, Young's modulus of the speaker support and speaker surround, and the passive radiator surround, and the damping factor of the speaker support and speaker surround can be set in the interactive interface of the simulation application. Of course, the mechanical structure and material (such as density, Poisson's ratio, etc.) of each component of the speaker system also need to be set.

[0101] S407 , inputting multiple frequency values ​​into a frequency response curve application simulation program to obtain the sound pressure levels of the loudspeaker system at different frequencies.

[0102] The simulation application of this embodiment may pre-configure a frequency response curve simulation model. In one example, the expression of the frequency response curve simulation model is as follows:

[0103]

[0104] Where SPL is the sound pressure level, ρ is the air density, S d is the effective vibration area of ​​the loudspeaker system, r is the distance from the loudspeaker system to the sound pressure level test point, BL is the electromechanical coupling factor, V vc is the working voltage of the voice coil, R e is the resistance value of the voice coil, M ms is the effective vibration mass of the speaker system, ω=2πf is the angular frequency, f is the frequency, ω0=2πf0 is the resonant frequency of the speaker system, P ref Reference sound pressure level, where K ms is the equivalent stiffness coefficient.

[0105] Among them, Qts The expression is as follows:

[0106]

[0107] Among them, C ms =1 / K ms , R ms is the equivalent impedance of the speaker system, R ms Related to the damping factor of the speaker surround and the speaker support, the electromechanical coupling factor BL and the equivalent stiffness coefficient K ms And the equivalent resistance R ms After nonlinearization, the force equation, Young's modulus and damping factor also show nonlinear characteristics. During SPL simulation, the BL in the SPL expression and the Q ts R in ms and C ms , which affects the sound pressure level of the speaker system when receiving excitation signals of different frequencies.

[0108] S408 : Fitting a frequency response curve based on the frequency values ​​and the sound pressure levels of the speaker system at each frequency value.

[0109] Specifically, the frequency may be represented by the horizontal axis and the sound pressure level may be represented by the vertical axis. The frequency response curve may be fitted by using the sound pressure levels under the excitation signals of multiple frequency values ​​to obtain a simulated frequency response curve.

[0110] like Figure 5 The diagram shows the measured frequency response curve of the loudspeaker system, the simulated frequency response curve without considering nonlinearity, and the simulated frequency response curve with considering nonlinearity. Figure 5 It can be seen that in the low-frequency range of 20-60Hz, the frequency response curve without considering nonlinearity is quite different from the measured frequency response curve, while the frequency response curve considering nonlinearity is slightly different from the measured frequency response curve and is closer to the measured frequency response curve.

[0111] This embodiment performs nonlinear parameter simulation on the voice coil, loudspeaker support, loudspeaker surround and passive radiator surround, and obtains the electromechanical coupling factor function of the voice coil, the equivalent stiffness coefficient function of the loudspeaker support, the equivalent stiffness coefficient function of the loudspeaker surround, the equivalent stiffness coefficient function of the passive radiator surround, the equivalent stiffness coefficient function and the equivalent force resistance function of the vibration system. The electromechanical coupling factor function is used to correct the force equation of the loudspeaker system, the equivalent stiffness coefficient function of the loudspeaker support and the equivalent stiffness coefficient function of the loudspeaker surround are used to correct the Young's modulus of the loudspeaker support and the Young's modulus of the loudspeaker surround, and the equivalent stiffness coefficient function of the passive radiator surround is used to correct the Young's modulus of the loudspeaker support and the Young's modulus of the loudspeaker surround. The coefficient function is used to correct the Young's modulus of the passive radiator surround, and the equivalent force and damping function of the vibration system is used to correct the damping factor of the loudspeaker support and the loudspeaker surround. The corrected force equation, Young's modulus and damping factor are input into the interactive interface of the frequency response curve simulation application. Multiple frequency values ​​are input into the frequency response curve application simulation program to obtain the sound pressure level of the loudspeaker system at different frequencies, so as to fit the simulated frequency response curve. The influence of nonlinear characteristics on the frequency response curve is taken into account. The frequency response curve obtained by simulating the loudspeaker system using the corrected force equation, Young's modulus and damping factor is closer to the frequency response curve obtained by actual test and more accurate.

[0112] Example 3

[0113] Figure 6 This is a schematic diagram of the structure of a speaker system frequency response curve simulation device provided by the third embodiment of the present invention. Figure 6 As shown, the loudspeaker system frequency response curve simulation device includes:

[0114] A nonlinear simulation module 601 is configured to simulate the nonlinear parameters of a loudspeaker system to obtain a force-electric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness coefficient function of each elastic component in the vibration system, and an equivalent force-impedance function of the vibration system;

[0115] A parameter correction module 602 is configured to correct the force equation of the speaker system, the Young's modulus and the damping factor of the elastic component based on the electromechanical coupling factor function, the equivalent stiffness coefficient function and the equivalent force resistance function;

[0116] The frequency response curve simulation module 603 is used to simulate the speaker system using the modified force equation, Young's modulus and damping factor to obtain the frequency response curve of the speaker system.

[0117] Optionally, the nonlinear simulation module 601 includes:

[0118] The simulation unit is used to perform nonlinear simulation on the voice coil, speaker support, speaker surround and passive radiator surround to obtain the electromechanical coupling factor function BL(x) of the voice coil and the equivalent stiffness coefficient function K of the speaker support. ms _ spider (x), the equivalent stiffness coefficient function K of the loudspeaker surround ms _ surround (x), the equivalent stiffness coefficient function K of the passive radiator surround ms _ pr (x), the equivalent stiffness coefficient function K of the vibration system ms (x) and the equivalent resistance function R ms (v).

[0119] Optionally, the electromechanical coupling factor function BL(x) is expressed as:

[0120]

[0121] Where F(x) is the force on the voice coil at displacement x, and i is the current in the voice coil;

[0122] Equivalent stiffness coefficient function K of loudspeaker support ms _ spider (x), the equivalent stiffness coefficient function K of the loudspeaker surround ms _ surround (x), the equivalent stiffness coefficient function K of the vibration system ms The expressions of (x) are:

[0123]

[0124] Where x_sipder represents the displacement of the voice coil when a force F(x) is applied to the voice coil with the speaker surround removed, x_surround represents the displacement of the voice coil when a force F(x) is applied to the voice coil with the speaker support removed, and x represents the displacement of the voice coil when a force F(x) is applied to the voice coil with both the speaker support and the speaker surround intact.

[0125] Equivalent stiffness coefficient function K of passive radiator surround ms The expression of _pr(x) is:

[0126]

[0127] Where F_surround(x) represents the force applied to the passive radiator, and x_max represents the maximum displacement of the passive radiator under the action of the force F_surround(x);

[0128] Equivalent resistance function R ms The expression of (v) is:

[0129] R ms (v) = R ms 0+a1v+……+a n v n ;

[0130] R ms 0 is the static mechanical resistance when the voice coil speed is equal to 0, a1, a2...a n is the nonlinear coefficient, v is the voice coil velocity, and n is a natural number greater than or equal to 2.

[0131] Optionally, the parameter correction module 602 includes:

[0132] a force equation correction unit, configured to correct the force equation of the loudspeaker system using the force-electric coupling factor function BL(x);

[0133] Loudspeaker support and loudspeaker surround Young's modulus correction unit, used to adopt the equivalent stiffness coefficient function K of the loudspeaker support ms _ spider (x), the equivalent stiffness coefficient function K of the loudspeaker surround ms _ surround (x) Modify the Young's modulus of the loudspeaker support and the Young's modulus of the loudspeaker surround, or use the equivalent stiffness coefficient function K of the vibration system ms (x) Correct the Young's modulus of the speaker support and the speaker surround;

[0134] Passive radiator surround Young's modulus correction unit, used to adopt the equivalent stiffness coefficient function K of the passive radiator surround ms _ pr (x) Correction of the Young's modulus of the passive radiator surround;

[0135] Damping factor correction unit, used to adopt the equivalent damping function R of the vibration system ms (v) Modifying the damping factors of the speaker support and the speaker surround.

[0136] Optionally, the modified force equation is:

[0137]

[0138] F is the force on the voice coil, x is the displacement of the voice coil, V0 is the voltage on the voice coil, v is the velocity of the voice coil, and Zb is the electrical impedance of the speaker;

[0139] Corrected Young's modulus E of the loudspeaker support spider (x) is:

[0140]

[0141] E spider (0) is the Young's modulus of the loudspeaker support when the displacement is equal to 0, K ms_spider (0) is the equivalent stiffness coefficient of the loudspeaker support when the displacement is equal to 0;

[0142] Corrected Young's modulus E of the speaker surround surround (x) is:

[0143]

[0144] E surround (0) is the Young's modulus of the loudspeaker surround when the displacement is equal to 0, K ms_surround (0) is the equivalent stiffness coefficient of the loudspeaker surround when the displacement is equal to 0;

[0145] Corrected Young's modulus E of the passive radiator surround surround_pr (x) is:

[0146]

[0147] E surround_pr (0) is the Young's modulus of the passive radiator surround when the displacement is equal to 0, K ms_surround_pr (0) is the equivalent stiffness coefficient of the passive radiator surround when the displacement is equal to 0;

[0148] The damping factor R of the speaker support after correction spider (v) is:

[0149]

[0150] R spider (0) is the damping factor of the loudspeaker support when the velocity is equal to 0, R ms (0) is the equivalent resistance when the speed is equal to 0;

[0151] The damping factor R of the speaker surround after correction surround (v) is:

[0152]

[0153] R surround (0) is the damping factor of the loudspeaker surround when the velocity is equal to 0.

[0154] Optional, corrected Young's modulus E of the loudspeaker support spider (x) is:

[0155]

[0156] E spider (0) is the Young's modulus of the loudspeaker support when the displacement is equal to 0, K ms(0) is the equivalent stiffness coefficient of the vibration system when the displacement is equal to 0;

[0157] Corrected Young's modulus E of the speaker surround surround (x) is:

[0158]

[0159] E surround (0) is the Young's modulus of the loudspeaker surround when the displacement is equal to 0.

[0160] Optionally, the frequency response curve simulation module 603 includes:

[0161] A parameter setting unit, used to input the modified force equation, Young's modulus and damping factor in the interactive interface of the frequency response curve simulation application;

[0162] A simulation unit, configured to input a plurality of frequency values ​​into the frequency response curve application simulation program to obtain the sound pressure levels of the loudspeaker system at different frequencies;

[0163] The frequency response curve fitting unit is used to fit the frequency response curve based on the frequency value and the sound pressure level of the speaker system at each frequency value.

[0164] The loudspeaker system frequency response curve simulation device provided in the embodiment of the present invention can execute the loudspeaker system frequency response curve simulation method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0165] Example 4

[0166] Figure 7 A schematic diagram of the structure of an electronic device 70 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0167] like Figure 7As shown, the electronic device 70 includes at least one processor 71 and a memory connected to the at least one processor 71, such as a read-only memory (ROM) 72, a random access memory (RAM) 73, etc., wherein the memory stores a computer program that can be executed by the at least one processor, and the processor 71 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 72 or the computer program loaded from the storage unit 78 to the random access memory (RAM) 73. Various programs and data required for the operation of the electronic device 70 can also be stored in the RAM 73. The processor 71, ROM 72 and RAM 73 are connected to each other via a bus 74. An input / output (I / O) interface 75 is also connected to the bus 74.

[0168] Multiple components in the electronic device 70 are connected to the I / O interface 75, including an input unit 76, such as a keyboard, a mouse, etc.; an output unit 77, such as various types of displays, speakers, etc.; a storage unit 78, such as a magnetic disk, an optical disk, etc.; and a communication unit 79, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 79 allows the electronic device 70 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0169] Processor 71 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of processor 71 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. Processor 71 executes the various methods and processes described above, such as the speaker system frequency response curve simulation method.

[0170] In some embodiments, the speaker system frequency response curve simulation method can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 78. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 70 via ROM 72 and / or communication unit 79. When the computer program is loaded into RAM 73 and executed by processor 71, one or more steps of the speaker system frequency response curve simulation method described above can be performed. Alternatively, in other embodiments, processor 71 can be configured to execute the speaker system frequency response curve simulation method in any other suitable manner (e.g., via firmware).

[0171] Various embodiments of the systems and techniques described above can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0172] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0173] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0174] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0175] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0176] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0177] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0178] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A method for simulating a frequency response curve of a loudspeaker system, characterized in that: include: Simulating the nonlinear parameters of the loudspeaker system to obtain a force-electric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness coefficient function of each elastic component in the vibration system, and an equivalent force resistance function of the vibration system; Modifying the force equation of the speaker system, the Young's modulus and the damping factor of the elastic component based on the electromechanical coupling factor function, the equivalent stiffness coefficient function and the equivalent force resistance function; The speaker system is simulated using the modified force equation, Young's modulus, and damping factor to obtain a frequency response curve of the speaker system.

2. The method for simulating the frequency response curve of a loudspeaker system according to claim 1, wherein: The elastic components in the vibration system include a loudspeaker support, a loudspeaker surround, and a passive radiator surround. The nonlinear parameters of the loudspeaker system are simulated to obtain a force-electric coupling factor function of the voice coil in the loudspeaker system, an equivalent stiffness coefficient function of each elastic component in the vibration system, and an equivalent force-impedance function of the vibration system, including: The voice coil, speaker support, speaker surround and passive radiator surround are simulated nonlinearly to obtain the electromechanical coupling factor function BL(x) of the voice coil and the equivalent stiffness coefficient function K of the speaker support. ms _ spider (x), the equivalent stiffness coefficient function K of the loudspeaker surround ms _ surround (x), the equivalent stiffness coefficient function K of the passive radiator surround ms _ pr (x), the equivalent stiffness coefficient function K of the vibration system ms (x) and the equivalent resistance function R ms (v).

3. The method for simulating the frequency response curve of a loudspeaker system according to claim 2, wherein: The expression of the electromechanical coupling factor function BL(x) is: Where F(x) is the force on the voice coil at displacement x, and i is the current in the voice coil; Equivalent stiffness coefficient function K of the support ms _ spider (x), the equivalent stiffness coefficient function K of the loudspeaker surround ms _ surround (x), the equivalent stiffness coefficient function K of the vibration system ms The expressions of (x) are: Where x_sipder represents the displacement of the voice coil when a force F(x) is applied to the voice coil with the speaker surround removed, x_surround represents the displacement of the voice coil when a force F(x) is applied to the voice coil with the speaker support removed, and x represents the displacement of the voice coil when a force F(x) is applied to the voice coil with both the speaker support and the speaker surround intact. Equivalent stiffness coefficient function K of passive radiator surround ms The expression of _pr(x) is: Where F_surround(x) represents the force applied to the passive radiator, and x_max represents the maximum displacement of the passive radiator under the action of the force F_surround(x); Equivalent resistance function R ms The expression of (v) is: R ms (v)=R ms 0+a1v+……+a n v n ; R ms 0 is the static mechanical resistance when the voice coil speed is equal to 0, a1, a2...a n is the nonlinear coefficient, v is the voice coil velocity, and n is a natural number greater than or equal to 2.

4. The method for simulating a loudspeaker system frequency response curve according to claim 2, wherein: The force equation of the loudspeaker system, the Young's modulus and the damping factor of the elastic component are corrected based on the electromechanical coupling factor function, the equivalent stiffness coefficient function and the equivalent force resistance function, including: Using the electromechanical coupling factor function BL(x) to correct the force equation of the loudspeaker system; The equivalent stiffness coefficient function K of the loudspeaker support is used ms _spider(x), the equivalent stiffness coefficient function K of the speaker surround ms _surround(x) modifies the Young's modulus of the loudspeaker support, the Young's modulus of the loudspeaker surround, or uses the equivalent stiffness coefficient function K of the vibration system ms (x) Correct the Young's modulus of the speaker support and the speaker surround; Equivalent stiffness coefficient function K of passive radiator surround ms _pr(x) modifies the Young's modulus of the passive radiator surround; The equivalent resistance function R of the vibration system is used ms (v) Modifying the damping factors of the speaker support and the speaker surround.

5. The method for simulating the frequency response curve of a loudspeaker system according to claim 4, wherein: The modified force equation is: F is the force on the voice coil, x is the displacement of the voice coil, V0 is the voltage on the voice coil, v is the velocity of the voice coil, and Zb is the electrical impedance of the speaker; Corrected Young's modulus E of the loudspeaker support spider (x) is: E spider (0) is the Young's modulus of the loudspeaker support when the displacement is equal to 0, K ms_spider (0) is the equivalent stiffness coefficient of the loudspeaker support when the displacement is equal to 0; Corrected Young's modulus E of the speaker surround surround (x) is: E surround (0) is the Young's modulus of the loudspeaker surround when the displacement is equal to 0, K ms_surround (0) is the equivalent stiffness coefficient of the loudspeaker surround when the displacement is equal to 0; Corrected Young's modulus E of the passive radiator surround surround_pr (x) is: E surround_pr (0) is the Young's modulus of the passive radiator surround when the displacement is equal to 0, K ms_surround_pr (0) is the equivalent stiffness coefficient of the passive radiator surround when the displacement is equal to 0; The damping factor R of the speaker support after correction spider (v) is: R spider (0) is the damping factor of the loudspeaker support when the velocity is equal to 0, R ms (0) is the equivalent resistance when the speed is equal to 0; The damping factor R of the speaker surround after correction surround (v) is: R surround (0) is the damping factor of the loudspeaker surround when the velocity is equal to 0.

6. The method for simulating the frequency response curve of a loudspeaker system according to claim 4, wherein: Corrected Young's modulus E of the loudspeaker support spider (x) is: E spider (0) is the Young's modulus of the loudspeaker support when the displacement is equal to 0, K ms (0) is the equivalent stiffness coefficient of the vibration system when the displacement is equal to 0; Corrected Young's modulus E of the speaker surround surround (x) is: E surround (0) is the Young's modulus of the loudspeaker surround when the displacement is equal to 0.

7. The method for simulating a loudspeaker system frequency response curve according to any one of claims 1 to 6, wherein: The speaker system is simulated using the modified force equation, Young's modulus, and damping factor to obtain a frequency response curve of the speaker system, including: Enter the modified force equation, Young's modulus, and damping factor into the interactive interface of the frequency response curve simulation application; Input multiple frequency values ​​into the frequency response curve simulation application to obtain the sound pressure levels of the loudspeaker system at different frequencies; A frequency response curve is fitted based on the frequency values ​​and the sound pressure levels of the speaker system at each frequency value.

8. A device for simulating the frequency response curve of a loudspeaker system, characterized in that: include: A nonlinear simulation module is used to simulate the nonlinear parameters of the loudspeaker system to obtain the electromechanical coupling factor function of the voice coil in the loudspeaker system, the equivalent stiffness coefficient function of each elastic component in the vibration system, and the equivalent force resistance function of the vibration system; a parameter correction module, configured to correct the force equation of the speaker system, the Young's modulus and the damping factor of the elastic component based on the electromechanical coupling factor function, the equivalent stiffness coefficient function and the equivalent force resistance function; The frequency response curve simulation module is used to simulate the loudspeaker system using the modified force equation, Young's modulus and damping factor to obtain the frequency response curve of the loudspeaker system.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor. The computer program is executed by the at least one processor so that the at least one processor can execute the loudspeaker system frequency response curve simulation method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the loudspeaker system frequency response curve simulation method according to any one of claims 1 to 7 when executed.

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