Loudspeaker box volume design method, computer readable medium and electronic device

Abstract

The invention provides a method for designing the volume of a loudspeaker box. The method comprises the following steps of: establishing a loudspeaker model which is only composed of a dangling edge, a vibrating diaphragm and a voice coil by at least one arithmetic device; using computer aided design to obtain weight parameters and surface area parameters of the horn model; obtaining a single resonant frequency parameter of the loudspeaker model by using computer-aided engineering; and utilizing the weight parameter, the surface area parameter, the monomer resonance frequency parameter and the expected resonance frequency range to generate the volume range of the sound box. According to the design method, the loudspeaker model can be established in a short time, the resonant frequency parameter of the loudspeaker monomer can be quickly known to obtain the volume range of the loudspeaker box, and the loudspeaker box meeting the volume range of the loudspeaker box is drawn by computer-aided design.

Description

Technical Field

[0001] The invention relates to a method for designing the volume of a loudspeaker box, a non-transient computer-readable medium and an electronic device using the method. Background Art

[0002] At present, most of the ways to design speaker boxes are as follows: the first way is to accumulate a lot of experience and then know how to design speaker boxes, but this is not easy for non-professional manufacturers to do; the second way is to use Computer Aided Engineering (CAE). The current way of modeling using CAE is to simulate all the components that make up the speaker together, and then obtain the speaker unit resonance frequency parameters, and then design the speaker box based on this. However, if you only want to obtain the speaker unit resonance frequency parameters, you don’t need to perform such a complicated analysis. Therefore, how to shorten the time required to obtain the speaker unit resonance frequency parameters to design the speaker box has been widely studied. Summary of the invention

[0003] The present invention is accomplished in view of the above-mentioned problems, and its purpose is to provide a method for designing the volume of a speaker box, a non-transient computer-readable medium and an electronic device using the same.

[0004] The present invention provides a method for designing the volume of a speaker box, comprising executing, by at least one computing device: establishing a speaker model consisting only of a suspension, a diaphragm and a voice coil; obtaining weight parameters and surface area parameters of the speaker model by computer-aided design; obtaining monomer resonance frequency parameters of the speaker model by computer-aided engineering; and generating a range of the volume of the speaker box by using the range of the weight parameter, the surface area parameter, the monomer resonance frequency parameter and the expected resonance frequency; wherein the weight parameter and the expected resonance frequency are each negatively correlated with the volume of the speaker box, and the surface area parameter and the monomer resonance frequency parameter are each positively correlated with the volume of the speaker box.

[0005] The present invention also provides a non-transient computer-readable medium storing a computer program, which enables the processor to execute the above-mentioned method for designing the volume of a speaker box when the processor executes the computer program instructions.

[0006] The present invention also provides an electronic device, comprising: a memory storing a computer program; and a processor connected to the memory and used to execute computer program instructions to execute the above-mentioned method for designing the volume of a speaker box.

[0007] Compared with the application of the existing corresponding technology, the design method of the speaker sound box volume of the present invention can establish a speaker model in a shorter time, and then quickly know the resonance frequency parameters of the speaker unit to obtain the range of the speaker box volume, and use computer-aided design to draw a speaker sound box that meets this range of the speaker box volume.

[0008] The above description of the content of the present invention and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. However, it is obvious to those with ordinary knowledge in the art that these examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Shown is a simplified diagram of a speaker structure model according to an embodiment of the present invention.

[0010] Figure 2 Shown is a method for designing the volume of a speaker box according to an embodiment of the present invention.

[0011] Component number description

[0012] 100 Speaker Structure

[0013] 200 Diaphragm

[0014] 300 Overhang

[0015] 400 Voice Coil

[0016] Steps S1 to S5 DETAILED DESCRIPTION

[0017] The detailed features and advantages of the present invention are described in detail in the following embodiments, and the contents are sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly, and according to the contents disclosed in this specification, the scope of the patent application and the drawings, any person skilled in the art can easily understand the relevant purposes and advantages of the present invention. The following examples are used to further illustrate the viewpoints of the present invention in detail, but are not intended to limit the scope of the present invention in any viewpoint.

[0018] Hereinafter, the method for designing the volume of a speaker box of the present invention, the non-transitory computer readable medium and the electronic device using the same will be described in detail with reference to the drawings.

[0019] Unless a restrictive term such as “only” is used, when terms such as “including”, “having”, etc. are used in the present specification, one or more components or steps may also be added.

[0020] Unless otherwise specified, expressions describing that a component is “connected” or “coupled” to another component may refer not only to being directly connected or coupled but also to being indirectly connected or coupled with one or more intermediate components therebetween.

[0021] When describing a time relationship, for example, when describing a time sequence with "after", "subsequently", "next", and "before", discontinuities may be included unless terms such as "immediately" or "directly" are used.

[0022] The software used to establish the speaker model in the present invention may be computer-aided design (CAD) type software or computer-aided industrial design (CAID) type software, etc., wherein the CAD type software may be AutoCAD, PRO-E, Solidworks, Catia, UG, etc., and the CAID type software may be Alias, Rhino, etc., but is not limited thereto.

[0023] The software used in the computer-aided engineering (CAE) of the present invention may be ANSYS, Abaqus, etc., but is not limited thereto.

[0024] Please refer to Figure 1 as well as Figure 2 . Figure 1 Shown is a simplified diagram of a speaker structure model according to an embodiment of the present invention; Figure 2 The present invention shows a method for designing the volume of a speaker box according to an embodiment of the present invention. In an embodiment of the present invention, the method for designing the volume of a speaker box includes executing with at least one computing device: establishing a speaker model S1 consisting only of a suspension, a diaphragm, and a voice coil, S1 is executed by computer-aided design, and here, the present invention is executed with AutoCAD, but is not limited thereto.

[0025] The weight parameter and the surface area parameter S2 of the speaker model are obtained by computer-aided design. S2 is implemented by AutoCAD, but is not limited thereto.

[0026] The single-unit resonance frequency parameter S3 of the speaker model is obtained by computer-aided engineering; S3 is executed by ANSYS, but is not limited thereto.

[0027] The range S4 of the volume of the sound box is generated by using the weight parameter, the surface area parameter, the monomer resonance frequency parameter and the range of the expected resonance frequency; S4 is executed by Excel, but is not limited thereto.

[0028] Computer-aided design is used to draw a speaker box S5 that meets the range of the speaker box volume. S5 is executed by AutoCAD, but is not limited to this.

[0029] The weight parameter and the expected resonance frequency are each negatively correlated with the volume of the speaker box, and the surface area parameter and the single-unit resonance frequency parameter are each positively correlated with the volume of the speaker box. In this embodiment, establishing a speaker model consisting only of a suspension, a diaphragm, and a voice coil may further include setting material parameters of the suspension, the diaphragm, and the voice coil. In this embodiment, the number of the at least one computing device is a single one. In another embodiment of the present invention, the number of the at least one computing device may be multiple, for example, different computing devices may be used to perform S1 to S5 respectively.

[0030] When building a speaker model, for the speaker alone (excluding the sound box), the mass of the suspension and voice coil connected to the diaphragm is very light, and the suspension is fixed to the speaker frame. Therefore, the suspension, diaphragm and voice coil can be regarded as local modes during modal analysis. That is, the single-unit resonance frequency of the speaker will not be affected by the speaker frame structure. Therefore, when building a speaker model, the speaker can be simplified to consist of only the suspension, diaphragm and voice coil (such as Figure 1 The speaker structure 100 is composed of only the suspension 300, the diaphragm 200 and the voice coil 400. The suspension 300 is located on the voice coil 400, and the diaphragm 200 is located on the suspension 300. That is, the suspension 300 is located between the diaphragm 200 and the voice coil 400.

[0031] The speaker structure 100 moves back and forth when in motion, so from the perspective of vibration, it can be regarded as a single free motion. When the speaker structure 100 (excluding the sound box) is in motion, its single resonance frequency f is The monomer resonance frequency f is obtained through ANSYS, but not limited thereto; m is the total mass of the diaphragm 200, the suspension 300 and the voice coil 400, which is obtained through AutoCAD, but not limited thereto; k is the stiffness of the suspension 300, which can be calculated by substituting f and m into the above formula, that is, k = m × (2πf) 2 Furthermore, when designing the volume V of the speaker box, the air in the speaker box is assumed to be an ideal gas, and when the speaker is actuated, it is assumed that the air in the speaker box undergoes adiabatic reversible expansion or contraction. Based on the above conditions, the first law of thermodynamics can be used to obtain in, And γ is a constant of 1.4; V is the volume of the speaker box, which is the value required by the present invention; ΔV is the volume change of the speaker box (that is, the volume change when the diaphragm moves downward), ΔV can also be equal to Ax, wherein A is the surface area of ​​the diaphragm, which is obtained from AutoCAD, but is not limited to this, and x is the distance the diaphragm moves downward; P is the pressure in the speaker box, which is equal to the atmospheric pressure (which can be regarded as a constant value); ΔP is the pressure change in the speaker box, and ΔP can also be expressed as Then, without considering damping and external forces, Newton's second law of motion can be used to obtain After sorting, you can get Further Substituting this equation, we get make The equation can be rewritten as Then divide both sides of the equal sign by m, and we get This is a second-order linear ordinary differential equation, so its angular frequency can be found The resonance frequency of the speaker including the speaker box (expected resonance frequency) The equation can be Rewrite k = m × (2πf) 2 Substituting this equation, the volume of the speaker box can be derived The desired resonant frequency f b The range of the volume of the speaker box can be obtained by plotting the range of the volume of the speaker box, A and m obtained from AutoCAD, f obtained from ANSYS, and γ and P as constants into the Excel file storing the equation. Then, the speaker box that meets the range of the volume of the speaker box is plotted using AutoCAD, but the invention is not limited to this.

[0032] In one embodiment of the present invention, a non-transitory computer-readable medium stores a computer program. When a processor executes the computer program instructions, the processor executes the above-mentioned method for designing the volume of a speaker box.

[0033] In one embodiment of the present invention, the electronic device includes: a memory storing a computer program; and a processor connected to the memory and used to execute computer program instructions to perform the above-mentioned method for designing the volume of a speaker box.

[0034] All or part of the steps in the method for designing the volume of the speaker box described in the above embodiment of the present invention can be implemented by a computer program, such as any combination of an application program, a driver, an operating system, etc. A person with ordinary knowledge in the relevant technical field can write the method of the above embodiment of the present invention into a computer program code, which will not be described for the sake of simplicity. The computer program implemented according to the method of the above embodiment of the present invention can be stored in an appropriate non-transient computer-readable medium, such as a DVD, CD-ROM, a flash drive, a hard disk, or a network server that can be accessed through a network (for example, the Internet, or other appropriate media). After the computer program is executed by the processor, the processor can execute all or part of the steps in the electronic circuit diagram comparison method described in the above embodiment. The processor is, for example, a central processing unit, a programmable logic controller, a microcontroller or other electronic device with data processing functions.

[0035] Compared with the application of the existing corresponding technology, the design method of the speaker sound box volume of the present invention can establish a speaker model in a shorter time, and then quickly know the resonance frequency parameters of the speaker unit to obtain the range of the speaker box volume, and use computer-aided design to draw a speaker sound box that meets this range of the speaker box volume.

[0036] The present invention is disclosed as above with the aforementioned embodiments, but it is not intended to limit the present invention. Without departing from the spirit and scope of the present invention, all changes and modifications are within the scope of patent protection of the present invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

Claims

1. A method for designing the volume of a loudspeaker box, characterized in that: The method comprises executing, with at least one computing device: Establish a speaker model consisting of only a suspension, a diaphragm and a voice coil; Using a computer-aided design method to obtain a weight parameter and a surface area parameter of the speaker model; Using a computer-aided engineering approach to obtain a single-unit resonance frequency parameter of the speaker model; and Using the weight parameter, the surface area parameter, the monomer resonance frequency parameter and a range of expected resonance frequencies, a range of speaker volume is generated; The weight parameter and the expected resonance frequency are each negatively correlated with the volume of the speaker box, and the surface area parameter and the monomer resonance frequency parameter are each positively correlated with the volume of the speaker box.

2. The method for designing the volume of a loudspeaker box according to claim 1, characterized in that: Establishing the speaker model consisting only of the suspension, the diaphragm and the voice coil further includes: setting material parameters of the suspension, the diaphragm and the voice coil.

3. The method for designing the volume of a speaker box according to claim 1, characterized in that: The at least one computing device further executes: The computer-aided design is used to draw a speaker box that meets the range of the speaker box volume.

4. The method for designing the volume of a loudspeaker box according to claim 1, characterized in that: The number of the at least one computing device is one.

5. The method for designing the volume of a speaker box according to claim 1, characterized in that: The number of the at least one computing device is plural.

6. The method for designing the volume of a loudspeaker box according to claim 1, characterized in that: The speaker model consisting only of the suspension, the diaphragm and the voice coil is established by the computer-aided design.

7. The method for designing the volume of a speaker box according to claim 1, characterized in that: The volume of the speaker box = -γ×atmospheric pressure×the surface area parameter 2 / [(2π) 2 × the weight parameter × (the desired resonance frequency 2 - The monomer resonance frequency parameter 2 )], where γ = constant pressure heat capacity of air / constant volume heat capacity of air.

8. A non-transitory computer-readable medium, characterized in that A computer program is stored, and when a processor executes instructions of the computer program, the processor is caused to execute the method for designing the volume of a speaker box as claimed in any one of claims 1 to 7.

9. An electronic device, characterized in that: Include: a memory storing a computer program; and A processor connected to the memory and used to execute the instructions of the computer program to perform the method for designing the volume of the speaker box as described in any one of claims 1 to 7.

Images