CN115474147A - Method and device for measuring performance parameters and readable storage medium - Google Patents
Method and device for measuring performance parameters and readable storage medium Download PDFInfo
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Abstract
本公开提供了一种性能参数的测量方法、测量装置和可读存储介质，该测量方法用于测量双面发声扬声器的两个振动单元的性能参数，该方法包括：输出第一激励信号和第二激励信号；第一激励信号用于驱动双面发声扬声器的第一振动单元振动，第二激励信号用于驱动双面发声扬声器的第二振动单元振动；其中，第一振动单元和第二振动单元分别设于双面发声扬声器的相对两侧；检测第一振动单元的振动位移、第二振动单元的振动位移、第一振动单元两端的电压和电流、以及第二振动单元两端的电压和电流；根据第一振动单元的振动位移、第一振动单元两端的电压和电流，测量第一振动单元的性能参数；根据第二振动单元的振动位移、第二振动单元两端的电压和电流，测量第二振动单元的性能参数。
The present disclosure provides a performance parameter measurement method, a measurement device and a readable storage medium. The measurement method is used to measure the performance parameters of two vibration units of a double-sided sound emitting speaker. The method includes: outputting a first excitation signal and a second excitation signal. Two excitation signals; the first excitation signal is used to drive the vibration of the first vibration unit of the double-sided sounding speaker, and the second excitation signal is used to drive the vibration of the second vibration unit of the double-sided sounding speaker; wherein, the first vibration unit and the second vibration The units are respectively arranged on opposite sides of the double-sided sounding speaker; the vibration displacement of the first vibration unit, the vibration displacement of the second vibration unit, the voltage and current at both ends of the first vibration unit, and the voltage and current at both ends of the second vibration unit are detected ; Measure the performance parameters of the first vibration unit according to the vibration displacement of the first vibration unit, the voltage and current at both ends of the first vibration unit; measure the second vibration unit according to the vibration displacement of the second vibration unit, the voltage and current at both ends of the second vibration unit 2. Performance parameters of the vibration unit.
Description
Technical Field
The present disclosure relates to the field of speaker measurement technologies, and more particularly, to a method and an apparatus for measuring performance parameters of two vibration units of a dual-sided sound speaker, and a readable storage medium.
Background
An audio transducer such as a loudspeaker is an acoustic device that produces sound through sound-electricity conversion, and has a wide variety of applications. In the prior art, there is a type of double-sided sound speaker having a set of magnetic circuit system and two vibration units, wherein the two vibration units share one magnetic circuit system.
The overall performance of the loudspeaker is closely related to the performance of each vibration unit, and the performance parameters of the vibration units play an important role in the design, manufacture and quality control of the whole loudspeaker.
Therefore, it is valuable to provide a solution that can accurately measure the performance parameters of the vibration unit in a dual-sided acoustic speaker.
Disclosure of Invention
An object of the present disclosure is to provide a new technical solution for measuring performance parameters of a vibration unit of a dual-sided acoustic speaker.
According to a first aspect of the present disclosure, there is provided a method of measuring a performance parameter of two vibration units of a double-sided sound emitting speaker, the method comprising:
outputting a first driving signal and a second driving signal; the first excitation signal is used for driving a first vibration unit of the double-sided sound-emitting loudspeaker to vibrate, and the second excitation signal is used for driving a second vibration unit of the double-sided sound-emitting loudspeaker to vibrate; the first vibration unit and the second vibration unit are respectively arranged on two opposite sides of the double-sided sounding loudspeaker;
detecting a vibration displacement of the first vibration unit, a vibration displacement of the second vibration unit, a voltage and a current across the first vibration unit, and a voltage and a current across the second vibration unit;
measuring performance parameters of the first vibration unit according to the vibration displacement of the first vibration unit and the voltage and the current at two ends of the first vibration unit; measuring performance parameters of the second vibration unit according to the vibration displacement of the second vibration unit and the voltage and the current at two ends of the second vibration unit;
wherein the performance parameter is a parameter representing performance of the corresponding vibration unit.
Optionally, the performance parameter includes an electrical parameter;
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, wherein the measurement of the performance parameters comprises the following steps:
obtaining the frequency spectrum of the impedance of the target vibration unit according to the voltage and the current at the two ends of the target vibration unit;
obtaining an impedance expression of the target vibration unit according to the electric power acoustic class ratio circuit of the double-sided sound production loudspeaker;
obtaining the electrical parameters of the target vibration unit according to the frequency spectrum of the impedance of the target vibration unit and the impedance expression of the target vibration unit;
wherein the target vibration unit is the first vibration unit or the second vibration unit.
Optionally, the performance parameters further include a resonance frequency, the electrical parameters include a vibration equivalent inductance, a vibration equivalent capacitance, and a vibration equivalent resistance,
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
and obtaining the resonant frequency of the target vibration unit according to the vibration equivalent inductance and the vibration equivalent capacitance of the target vibration unit.
Optionally, the performance parameters further include mechanical quality parameters, the electrical parameters further include vibration equivalent resistance,
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
and obtaining the mechanical quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the vibration equivalent resistance of the target vibration unit.
Optionally, the performance parameters further include electrical quality parameters, the electrical parameters further include voice coil dc resistance,
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
and obtaining the electric quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the voice coil direct current resistance of the target vibration unit.
Optionally, the performance parameter further includes a force-electricity coupling factor;
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
acquiring a frequency spectrum of the displacement of the target vibration unit and a frequency spectrum of the voltage at two ends of the target vibration unit;
constructing a transfer function of the spectrum of the displacement to the spectrum of the voltage;
and obtaining the force-electricity coupling factor of the target vibration unit according to the transfer function.
Optionally, the performance parameters further include mechanical parameters;
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, wherein the measurement of the performance parameters comprises the following steps:
and obtaining the mechanical parameters of the target vibration unit by combining the electric power acoustic-to-analog circuit according to the electrical parameters and the force-electric coupling factors of the target vibration unit.
According to a second aspect of the present disclosure, there is provided a performance parameter measuring apparatus, comprising a first output module, a second output module, a first impedance detection module, a second impedance detection module, a first displacement detection module, a second displacement detection module, and a processing module;
the first output module is arranged to output a first excitation signal, and the first excitation signal is used for driving a first vibration unit of the double-sided sounding loudspeaker to vibrate;
the second output module is configured to output a second excitation signal; the second excitation signal is used for driving a second vibration unit of the double-sided sounding loudspeaker to vibrate; the first vibration unit and the second vibration unit are respectively arranged on two opposite sides of the double-sided sounding loudspeaker;
the first impedance detection module is configured to detect a voltage and a current across the first vibration unit;
the second impedance detection module is configured to detect a voltage and a current across the second vibration unit;
the first displacement detection module is arranged to detect the vibration displacement of the first vibration unit;
the second displacement detection module is configured to detect the vibration displacement of the second vibration unit
The processing module is configured to measure a performance parameter of the first vibration unit according to the vibration displacement of the first vibration unit, and the voltage and current across the first vibration unit; and measuring the performance parameters of the second vibration unit according to the vibration displacement of the second vibration unit, and the voltage and the current at two ends of the second vibration unit.
According to a third aspect of the present disclosure, there is provided a performance parameter measuring apparatus comprising:
a processor and a memory for storing instructions for controlling the processor to perform the method according to the first aspect of the present disclosure.
According to a fourth aspect of the present disclosure, there is provided a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method according to the first aspect of the present disclosure.
Through this disclosed embodiment, output first excitation signal and second excitation signal, drive the first vibration unit and the second vibration unit simultaneous vibration of two-sided vocal speaker, the performance parameter of two vibration units at two-sided vocal speaker in an excitation process all measures, can improve the measurement of the performance parameter's of two vibration units among the two-sided vocal speaker measurement effeciency and measurement accuracy.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 shows a flow chart of a method of measuring a performance parameter of an embodiment of the present disclosure.
Fig. 2 shows a block diagram of a performance parameter measuring apparatus according to a first embodiment of the present disclosure.
Fig. 3 shows a block diagram of a performance parameter measuring apparatus according to a second embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a flowchart of a performance parameter measurement method provided by an embodiment of the present disclosure. The method in this embodiment may be implemented by a performance parameter measuring device.
As shown in fig. 1, the method may include steps S1000 to S3000 as follows:
step S1000, outputting a first excitation signal and a second excitation signal, wherein the first excitation signal is used for driving a first vibration unit of the double-sided sound-emitting loudspeaker to vibrate, and the second excitation signal is used for driving a second vibration unit of the double-sided sound-emitting loudspeaker to vibrate.
In this embodiment, the first vibration unit and the second vibration unit are respectively disposed on two opposite sides of the dual-sided sound speaker, and the first vibration unit and the second vibration unit may share one magnetic circuit system in the dual-sided sound speaker.
In this embodiment, the first excitation signal and the second signal may both be multi-tone excitation signals. The signal content of the first excitation signal and the second excitation signal can be the same or different; the first excitation signal and the second excitation signal may be one signal or two signals, which is not limited herein.
In one embodiment of the present disclosure, a first interface for setting a start-stop frequency of a first excitation signal, a second interface for setting a start-stop frequency of a second excitation signal, a third interface for setting a signal duration of the first excitation signal, and a fourth interface for setting a signal duration of the second excitation signal may be provided. In case the first and second stimulus signals have the same signal content or the first and second stimulus signals are one signal, the first and second interfaces may be one interface and the third and fourth interfaces may be one interface.
In this embodiment, the first excitation signal and the second excitation signal may be multi-tone excitation signals, and the user may set the start-stop frequency of the first excitation signal through the first interface and the start-stop frequency of the second excitation signal through the second interface. The measuring apparatus of this embodiment may acquire the start-stop frequency of the first excitation signal through the first interface, and generate the first excitation signal according to the start-stop frequency of the first excitation signal; and acquiring the start-stop frequency of the second excitation signal through the second interface, and generating the second excitation signal according to the start-stop frequency of the second excitation signal.
Further, the signal duration of the first excitation signal may be a measurement duration of a performance parameter of the first vibration unit; the signal duration of the second excitation signal may be a measured duration of a performance parameter of the second vibration unit.
Through this embodiment, the user can set the start-stop frequency and the signal duration of first excitation signal and second excitation signal according to self actual demand, promotes user experience.
Step S2000, detecting a vibration displacement of the first vibration unit, a vibration displacement of the second vibration unit, a voltage and a current across the first vibration unit, and a voltage and a current across the second vibration unit.
In one embodiment of the present disclosure, the measuring apparatus may include a first displacement detecting module for detecting a vibration displacement of the first vibration unit and a second displacement detecting module for detecting a vibration displacement of the second vibration unit.
In one example, the first displacement detection module and the second displacement detection module may both be laser displacement sensors.
In one embodiment of the present disclosure, the measuring apparatus may include a first impedance detection module and a second impedance detection module, the first impedance detection module may detect a voltage and a current across the first vibration unit, and the second impedance detection module may detect a voltage and a current across the second vibration unit.
Further, the first impedance detection module may include a first impedance, the first impedance is connected to the driving circuit of the first vibration unit, and the first impedance detection module is configured to obtain the voltage and the current across the first vibration unit according to the voltage of the first excitation signal, the voltage across the first impedance, and the impedance value of the first impedance. The second impedance detection module comprises a second impedance, the second impedance is connected to a driving loop of the second vibration unit, and the second impedance detection module is set to obtain the voltage and the current at the two ends of the second vibration unit according to the voltage of the second excitation signal, the voltage at the two ends of the second impedance and the impedance value of the second impedance.
In this embodiment, the voltage across the first vibration unit may be obtained from the voltage of the first excitation signal and the voltage across the first impedance; according to the voltage at the two ends of the first impedance and the impedance value of the first impedance, the current at the two ends of the first impedance can be obtained, namely the current at the two ends of the first vibration unit. Correspondingly, the voltage at the two ends of the second vibration unit can be obtained according to the voltage of the second excitation signal and the voltage at the two ends of the second impedance; according to the voltage at the two ends of the second impedance and the impedance value of the second impedance, the current at the two ends of the second impedance can be obtained, namely the current at the two ends of the second vibration unit.
Step S3000, measuring performance parameters of the first vibration unit according to the vibration displacement of the first vibration unit and the voltage and the current at two ends of the first vibration unit; and measuring the performance parameters of the second vibration unit according to the vibration displacement of the second vibration unit, and the voltage and the current at two ends of the second vibration unit.
Wherein the performance parameter is a parameter representing the performance of the corresponding vibration unit.
The performance parameter in this embodiment may be a T/S parameter. Since the last 70 s, a.n.thiele and r.h.small in australia proposed several independent small signal parameters of direct radiating loudspeakers, which were used to characterize the low frequency performance of loudspeakers, and it was a production and design process that was widely used for loudspeaker systems. The International Electrotechnical Commission (IEC) refers to this as the T/S parameter.
In the embodiment of the present disclosure, the first vibration unit or the second vibration unit may be used as the target vibration unit, and a specific manner of measuring the performance parameter of the target vibration unit according to the vibration displacement of the target vibration unit, the voltage and the current across the target vibration unit will be described below.
In one embodiment of the present disclosure, the performance parameter may include an electrical parameter, which may include at least one of a voice coil direct current resistance, a voice coil inductance, a vibration equivalent capacitance, and a vibration equivalent impedance.
In this embodiment, measuring the performance parameter of the target vibration unit according to the vibration displacement of the target vibration unit, the voltage and the current across the target vibration unit may include:
obtaining the frequency spectrum of the impedance of the target vibration unit according to the voltage and the current at two ends of the target vibration unit; according to the electric power sound class ratio circuit of the double-sided sound production loudspeaker; obtaining an impedance expression of the target vibration unit; and obtaining the electrical parameters of the target vibration unit according to the frequency spectrum of the impedance of the target vibration unit and the impedance expression of the target vibration unit.
The frequency spectrum of the impedance of the target vibration unit is obtained according to the voltage and the current at the two ends of the target vibration unit, which may be obtained by first obtaining the frequency spectrum of the voltage at the two ends of the target vibration unit and the frequency spectrum of the current at the two ends of the target vibration unit, and obtaining the frequency spectrum of the impedance of the target vibration unit according to the frequency spectrum of the voltage and the frequency spectrum of the current. The frequency spectrum of the voltage may be obtained by performing fourier transform on the voltage at two ends of the target vibration unit, and the frequency spectrum of the current may be obtained by performing fourier transform on the current relative to the target vibration unit.
In the present embodiment, the frequency spectrum of the impedance of the target vibration unit may be obtained by the following formula:
where Z (w) is a frequency spectrum of the impedance of the target vibration unit, U (w) is a frequency spectrum of the voltage across the target vibration unit, and I (w) is a frequency spectrum of the current across the target vibration unit.
In the present embodiment, the impedance expression may be expressed as:
wherein R is e Is the voice coil dc resistance of the target vibration unit,L e voice coil inductance of target vibration unit, L ces Is the vibration equivalent inductance of the target vibration unit, C mes Is the vibration equivalent capacitance, R, of the target vibration unit es R2 is an eddy current equivalent resistance, and L2 is an eddy current equivalent inductance, which is a vibration equivalent resistance of the target vibration unit.
Further, the DC resistances R of the voice coils can be respectively fitted according to a least square method e Voice coil inductance L e Vibration equivalent inductance L ces Vibration equivalent capacitance C mes And vibration equivalent resistance R es Eddy current equivalent resistance R 2 Eddy current equivalent inductance L 2 。
In one embodiment of the present disclosure, the performance parameter may also include a resonant frequency. Then, measuring the performance parameter of the target vibration unit according to the vibration displacement of the target vibration unit, the voltage and the current across the target vibration unit may include:
and obtaining the resonant frequency of the target vibration unit according to the vibration equivalent inductance and the vibration equivalent capacitance of the target vibration unit.
In one example, the resonant frequency of the target vibration unit may be obtained by the following formula:
wherein f is s Is the resonant frequency, L, of the target vibrating unit ces Is the vibration equivalent inductance of the target vibration unit, C mes Is the vibration equivalent capacitance of the target vibration unit.
In one embodiment of the present disclosure, the performance parameter may also include a mechanical quality parameter. Then, measuring the performance parameter of the target vibration unit according to the vibration displacement of the target vibration unit, the voltage and the current across the target vibration unit may include:
and obtaining the mechanical quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the vibration equivalent resistance of the target vibration unit.
In one example, the mechanical quality parameter of the target vibration unit may be obtained by the following formula:
Q ms ＝2π*f s *C mes *R es
wherein Q is ms Is a mechanical quality parameter of the target vibration unit, f s Is the resonant frequency of the target vibrating unit, C mes Is the vibration equivalent capacitance, R, of the target vibration unit es Is the vibration equivalent resistance of the target vibration unit.
In one embodiment of the present disclosure, the performance parameter may also include an electrical quality parameter. Then, measuring the performance parameter of the target vibration unit according to the vibration displacement of the target vibration unit, the voltage and the current across the target vibration unit may include:
and obtaining the electric quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the voice coil resistance of the target vibration unit.
In one example, the electrical quality parameter of the target vibration unit may be obtained by the following formula:
Q es ＝2π*f s *C mes *R e
wherein Q is es Is a mechanical quality parameter of the target vibrating unit, f s Is the resonant frequency of the target vibrating unit, C mes Is the vibration equivalent capacitance, R, of the target vibration unit e Is the voice coil dc resistance of the target vibration unit.
On this basis, the performance parameters may also include overall quality parameters. The overall quality parameter of the target vibration unit may be obtained from the mechanical quality parameter and the electrical quality parameter of the target vibration unit.
In one example, the total quality parameter of the target vibration unit may be obtained by the following formula:
wherein Q is ts Is the total quality parameter, Q, of the target vibrating unit ms Is a mechanical quality parameter, Q, of the target vibration unit es Is the mechanical quality parameter of the target vibration unit.
In one embodiment of the present disclosure, the performance parameter may also include a force electrical coupling factor. Then, measuring the performance parameter of the target vibration unit according to the vibration displacement of the target vibration unit, the voltage and the current across the target vibration unit may include:
acquiring a frequency spectrum of displacement of a target vibration unit and a frequency spectrum of voltage at two ends of the target vibration unit; constructing a transfer function of the shifted spectrum to the spectrum of the voltage; and obtaining the force-electricity coupling factor of the target vibration unit according to the transfer function.
In this embodiment, the frequency spectrum of the displacement of the target vibration unit may be obtained by performing fourier transform on the displacement of the target vibration unit, and the frequency spectrum of the voltage across the target vibration unit may be obtained by performing fourier transform on the voltage across the target vibration unit.
The transfer function of the shifted spectrum to the spectrum of the voltage can be expressed as:
wherein H (w) is a transfer function, X (w) is a frequency spectrum of a displacement of the target vibration unit, U (w) is a frequency spectrum of a voltage across the target vibration unit, and BL is a force-electric coupling factor of the target vibration unit.
In this embodiment, the force-electric coupling factor of the target vibration unit may be fitted to the transfer function by using a least square method.
In one embodiment of the present disclosure, the performance parameters may also include mechanical parameters. Wherein,
one. The mechanical parameter may comprise at least one of a vibrating mass Mms, a compliance Cms, a resistance Rms
In this embodiment, measuring the performance parameter of the target vibration unit according to the vibration displacement of the target vibration unit, the voltage and the current across the target vibration unit may include:
and obtaining the mechanical parameters of the target vibration unit by combining an electric power acoustic analog circuit according to the electrical parameters and the force-electricity coupling factors of the target vibration unit.
In one embodiment, the mechanical parameter may include a vibrating mass, and the vibrating mass of the target vibrating unit may be determined by the following formula:
M ms ＝C mes *(BL) 2
wherein M is ms Is the vibrating mass of the target vibrating unit, C mes The equivalent capacitance of the target vibration unit is shown, and BL is the force-electricity coupling factor of the target vibration unit.
In one embodiment, the mechanical parameter may include a compliance, and the compliance of the target vibratory unit may be determined by the following equation:
wherein, C ms Is the equivalent force of the target vibration unit, L ces The equivalent inductance of the target vibration unit is shown, and BL is the force-electricity coupling factor of the target vibration unit.
In one embodiment, the mechanical parameter may include a mechanical resistance, and the mechanical resistance of the target vibratory unit may be determined by the following formula:
wherein R is ms Is the force resistance of the target vibration unit, R es The equivalent resistance of the target vibration unit, BL is the force-electric coupling factor of the target vibration unit.
Through this disclosed embodiment, output first excitation signal and second excitation signal, drive the first vibration unit and the second vibration unit simultaneous vibration of two-sided vocal speaker, all measure the performance parameter of two vibration units of two-sided vocal speaker in an excitation process, can improve the measurement of the performance parameter's of two vibration units among the two-sided vocal speaker measurement effeciency and measurement accuracy.
< apparatus embodiment >
In the present embodiment, a performance parameter measuring apparatus 2000 is provided.
As shown in fig. 2, the measurement apparatus 2000 includes a first output module 2100, a second output module 2200, a first impedance detection module 2300, a second impedance detection module 2400, a first displacement detection module 2500, a second displacement detection module 2600, and a processing module 2700.
The first output module 2100 is configured to output a first excitation signal for driving the first vibration unit of the double-sided sound speaker 3000 to vibrate.
The second output module 2200 is configured to output a second excitation signal; the second excitation signal is used to drive the second vibration unit of the dual-sided sound speaker 3000 to vibrate. The first vibration unit and the second vibration unit are respectively disposed on two opposite sides of the dual-side sounding speaker 3000.
The first impedance detecting module 2300 is configured to detect a voltage and a current across the first vibration unit.
The second impedance detection module 2400 is configured to detect a voltage and a current across the second vibration unit.
The first displacement detection module 2500 is configured to detect a vibrational displacement of the first vibration unit.
The second displacement detection module 2600 is configured to detect a vibration displacement of the second vibration unit.
The processing module 2700 is configured to measure a performance parameter of the first vibration unit according to a vibration displacement of the first vibration unit, a voltage and a current across the first vibration unit; and measuring the performance parameters of the second vibration unit according to the vibration displacement of the second vibration unit, and the voltage and the current at two ends of the second vibration unit.
In one embodiment of the present disclosure, the performance parameter comprises an electrical parameter;
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, including:
obtaining the frequency spectrum of the impedance of the target vibration unit according to the voltage and the current at the two ends of the target vibration unit;
obtaining an impedance expression of the target vibration unit according to the electric power acoustic class ratio circuit of the double-sided sound production loudspeaker;
obtaining an electrical parameter of the target vibration unit according to the frequency spectrum of the impedance of the target vibration unit and the impedance expression of the target vibration unit;
wherein the target vibration unit is the first vibration unit or the second vibration unit.
In one embodiment of the present disclosure, the performance parameters further include a resonant frequency, the electrical parameters include a vibration equivalent inductance and a vibration equivalent capacitance,
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
and obtaining the resonant frequency of the target vibration unit according to the vibration equivalent inductance and the vibration equivalent capacitance of the target vibration unit.
In one embodiment of the present disclosure, the performance parameters further include mechanical quality parameters, the electrical parameters further include vibration equivalent resistance,
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
and obtaining the mechanical quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the vibration equivalent resistance of the target vibration unit.
In one embodiment of the present disclosure, the performance parameters further include an electrical quality parameter, the electrical parameter further includes a voice coil dc resistance,
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
and obtaining the electric quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the direct current resistance of the vibration voice coil of the target vibration unit.
In one embodiment of the present disclosure, the performance parameter further comprises a force-electric coupling factor;
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, and further comprising:
acquiring a frequency spectrum of the displacement of the target vibration unit and a frequency spectrum of the voltage at two ends of the target vibration unit;
constructing a transfer function of the spectrum of the displacement to the spectrum of the voltage;
and obtaining the force-electricity coupling factor of the target vibration unit according to the transfer function.
In one embodiment of the present disclosure, the performance parameters further include mechanical parameters;
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, wherein the measurement of the performance parameters comprises the following steps:
and obtaining the mechanical parameters of the target vibration unit by combining the electric power acoustic-to-analog circuit according to the electrical parameters and the force-electric coupling factors of the target vibration unit.
In another embodiment, as shown in fig. 3, the measurement apparatus 2000 may further include a processor 2800 and a memory 2900, the memory 2900 configured to store executable instructions; the instructions are used to control the processor 2800 to perform the performance parameter measurement methods described above.
< readable storage Medium embodiment >
In this embodiment, there is also provided a readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of measuring a performance parameter as in any of the embodiments of the present disclosure.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A method for measuring a performance parameter of two vibration units of a dual-sided sound speaker, the method comprising:
outputting a first driving signal and a second driving signal; the first excitation signal is used for driving the first vibration unit to vibrate, and the second excitation signal is used for driving the second vibration unit to vibrate; the first vibration unit and the second vibration unit are respectively arranged on two opposite sides of the double-sided sounding loudspeaker;
detecting a vibration displacement of the first vibration unit, a vibration displacement of the second vibration unit, a voltage and a current across the first vibration unit, and a voltage and a current across the second vibration unit;
measuring performance parameters of the first vibration unit according to the vibration displacement of the first vibration unit and the voltage and the current at two ends of the first vibration unit; measuring performance parameters of the second vibration unit according to the vibration displacement of the second vibration unit and the voltage and the current at two ends of the second vibration unit;
wherein the performance parameter is a parameter representing performance of the corresponding vibration unit.
2. The method of measurement according to claim 1, wherein the performance parameter comprises an electrical parameter;
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, wherein the measurement of the performance parameters comprises the following steps:
obtaining the frequency spectrum of the impedance of the target vibration unit according to the voltage and the current at the two ends of the target vibration unit;
obtaining an impedance expression of the target vibration unit according to the electric power acoustic class ratio circuit of the double-sided sound production loudspeaker;
obtaining the electrical parameters of the target vibration unit according to the frequency spectrum of the impedance of the target vibration unit and the impedance expression of the target vibration unit;
wherein the target vibration unit is the first vibration unit or the second vibration unit.
3. The method of measurement according to claim 2, wherein the performance parameters further include a resonant frequency, the electrical parameters include a vibration equivalent inductance and a vibration equivalent capacitance,
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
and obtaining the resonant frequency of the target vibration unit according to the vibration equivalent inductance and the vibration equivalent capacitance of the target vibration unit.
4. The method of measurement according to claim 3, wherein the performance parameters further comprise mechanical quality parameters, the electrical parameters further comprise vibration equivalent resistance,
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, and further comprising:
and obtaining the mechanical quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the vibration equivalent resistance of the target vibration unit.
5. The method of measurement according to claim 3, wherein the performance parameter further comprises an electrical quality parameter, the electrical parameter further comprising a voice coil DC resistance,
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, and further comprising:
and obtaining the electric quality parameters of the target vibration unit according to the resonance frequency, the vibration equivalent capacitance and the voice coil direct current resistance of the target vibration unit.
6. The measurement method of claim 2, wherein the performance parameter further comprises a force-electric coupling factor;
measuring performance parameters of the target vibration unit according to the vibration displacement of the target vibration unit, and the voltage and the current at two ends of the target vibration unit, and further comprising:
acquiring a frequency spectrum of the displacement of the target vibration unit and a frequency spectrum of the voltage at two ends of the target vibration unit;
constructing a transfer function of the spectrum of the displacement to the spectrum of the voltage;
and obtaining the force-electricity coupling factor of the target vibration unit according to the transfer function.
7. The method of measurement according to claim 6, wherein the performance parameters further include mechanical parameters;
measuring performance parameters of a target vibration unit according to vibration displacement of the target vibration unit, and voltage and current at two ends of the target vibration unit, wherein the measurement of the performance parameters comprises the following steps:
and obtaining the mechanical parameters of the target vibration unit by combining the electric power acoustic-to-analog circuit according to the electrical parameters and the force-electric coupling factors of the target vibration unit.
8. The device for measuring the performance parameters is characterized by comprising a first output module, a second output module, a first impedance detection module, a second impedance detection module, a first displacement detection module, a second displacement detection module and a processing module;
the first output module is arranged to output a first excitation signal, and the first excitation signal is used for driving a first vibration unit of the double-sided sounding loudspeaker to vibrate;
the second output module is configured to output a second excitation signal; the second excitation signal is used for driving a second vibration unit of the double-sided sounding loudspeaker to vibrate; the first vibration unit and the second vibration unit are respectively arranged on two opposite sides of the double-sided sounding loudspeaker;
the first impedance detection module is configured to detect a voltage and a current across the first vibration unit;
the second impedance detection module is configured to detect a voltage and a current across the second vibration unit;
the first displacement detection module is arranged to detect the vibration displacement of the first vibration unit;
the second displacement detection module is configured to detect the vibration displacement of the second vibration unit
The processing module is configured to measure a performance parameter of the first vibrating unit according to a vibration displacement of the first vibrating unit, and a voltage and a current across the first vibrating unit; and measuring the performance parameters of the second vibration unit according to the vibration displacement of the second vibration unit, and the voltage and the current at two ends of the second vibration unit.
9. A performance parameter measuring device, comprising:
a processor and a memory for storing instructions for controlling the processor to perform the method of any of claims 1 to 7.
10. A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119865742A (en) * | 2023-10-20 | 2025-04-22 | 武汉市聚芯微电子有限责任公司 | Speaker resonance frequency determination method, speaker resonance frequency determination device, electronic device, and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442698A (en) * | 2008-09-26 | 2009-05-27 | 嘉兴中科声学科技有限公司 | Method for measuring linear parameter of loudspeaker |
| CN102158793A (en) * | 2011-04-02 | 2011-08-17 | 嘉兴中科声学科技有限公司 | Method utilizing laser sensor to measure speaker parameters and system |
| CN111513725A (en) * | 2020-04-01 | 2020-08-11 | 中国科学院声学研究所 | A method and system for analyzing middle ear acoustic impedance using input electrical impedance parameters |
| CN114866925A (en) * | 2022-05-31 | 2022-08-05 | 歌尔股份有限公司 | Sound-producing devices and sound-producing equipment |
-
2022
- 2022-08-31 CN CN202211065630.8A patent/CN115474147A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442698A (en) * | 2008-09-26 | 2009-05-27 | 嘉兴中科声学科技有限公司 | Method for measuring linear parameter of loudspeaker |
| CN102158793A (en) * | 2011-04-02 | 2011-08-17 | 嘉兴中科声学科技有限公司 | Method utilizing laser sensor to measure speaker parameters and system |
| CN111513725A (en) * | 2020-04-01 | 2020-08-11 | 中国科学院声学研究所 | A method and system for analyzing middle ear acoustic impedance using input electrical impedance parameters |
| CN114866925A (en) * | 2022-05-31 | 2022-08-05 | 歌尔股份有限公司 | Sound-producing devices and sound-producing equipment |
Non-Patent Citations (1)
| Title |
|---|
| 王以真: "《实用磁路设计》", 30 September 2008, 国防工业出版社, pages: 54 - 55 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119865742A (en) * | 2023-10-20 | 2025-04-22 | 武汉市聚芯微电子有限责任公司 | Speaker resonance frequency determination method, speaker resonance frequency determination device, electronic device, and storage medium |
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