CN111601224A - Microphone performance testing method and device and electronic equipment - Google Patents
Microphone performance testing method and device and electronic equipment Download PDFInfo
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- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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Abstract
The invention relates to a microphone performance testing method and device and electronic equipment. The method comprises the following steps: acquiring an excitation signal set by a user; applying the excitation signal to the microphone; collecting a response signal of the microphone under the action of the excitation signal; and processing the response signal according to a preset algorithm to obtain performance data. The method improves efficiency and precision of Click and Pop performance test.
Description
Technical Field
The present invention relates to the field of microphone performance testing, and more particularly, to a method and apparatus for testing microphone performance, an electronic device, and a computer-readable storage medium.
Background
At the moment when the microphone is started, instantaneous current is injected into the microphone, and after the instantaneous current is amplified by the microphone, click and burst (ClickandPop) sound can be generated through a sound generating device such as a sound box, so that the use experience of a user is influenced.
Therefore, it is necessary to test the ciickandpop performance at the moment of microphone start-up. In one test method, a microphone is connected with a sound generating device, the size of ClickandPop noise emitted by the sound generating device is measured while the microphone is started, and the ClickandPop performance at the moment of starting the microphone is evaluated according to the size of the noise. However, the accuracy of the above-mentioned test method is not high, since it is difficult to ensure complete agreement between the test conditions in a plurality of tests.
Therefore, it is necessary to provide a new technical solution for testing the ClickandPop performance at the moment of starting the microphone.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a new technical solution for performing a microphone performance test.
According to a first aspect of the invention, a method for testing microphone performance comprises:
acquiring an excitation signal set by a user;
applying the excitation signal to the microphone;
collecting a response signal of the microphone under the action of the excitation signal;
and processing the response signal according to a preset algorithm to obtain performance data.
Optionally, the acquiring the stimulation signal set by the user includes at least one of:
acquiring a target signal selected by a user from a plurality of preset signals to obtain the excitation signal;
and acquiring signal parameters input by a user to obtain the excitation signal.
Optionally, the processing the response signal according to a preset algorithm to obtain performance data includes:
filtering the response signal to obtain a filtered response signal;
and obtaining the performance data according to the filtered response signal.
Optionally, the filtering process is an a-weighted filtering.
Optionally, the obtaining the performance data according to the filtered response signal includes:
and calculating the effective value of the filtered response signal to obtain the performance data.
Optionally, the acquiring a response signal of the microphone under the action of the excitation signal includes:
sampling the response signal for multiple times according to a preset sampling period to obtain multiple sampling values;
processing the response signal according to a preset algorithm to obtain performance data, including:
and processing the plurality of sampling values according to the preset algorithm to obtain a plurality of performance values.
Optionally, the method further comprises:
generating a performance curve of the microphone according to the plurality of performance values.
According to a second aspect of the present invention, there is provided a microphone performance testing apparatus comprising:
the acquisition module is used for acquiring an excitation signal set by a user;
an excitation module for applying the excitation signal to the microphone;
the acquisition module is used for acquiring a response signal of the microphone under the action of the excitation signal;
and the processing module is used for processing the response signal according to a preset algorithm to obtain performance data.
According to a third aspect of the present invention, there is provided an electronic apparatus comprising:
a memory for storing executable commands;
a processor for performing the method according to the first aspect of the invention under control of the executable command.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium storing executable instructions which, when executed by a processor, implement the method according to the first aspect of the present invention.
According to the method for testing the performance of the microphone, the excitation signal set by the user is applied to the microphone, the response signal is acquired, the performance data is automatically calculated according to the response signal, the excitation signal in the test can be accurately controlled, the performance of the microphone can be accurately measured, and the efficiency and the precision of the Click and Pop performance test are improved.
Other features of the present invention 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 this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of an electronic device that may be used to implement an embodiment of the invention.
FIG. 2 is a schematic diagram of a test system that may be used to implement an embodiment of the invention
Fig. 3 is a flowchart of a method for microphone performance according to an embodiment of the present invention.
Fig. 4 is a flowchart of a specific example provided by the embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention 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 invention 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 invention, 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.
< hardware configuration >
FIG. 1 shows a schematic diagram of an electronic device that may be used to implement an embodiment of the invention. As shown in fig. 1, the electronic apparatus 100 includes a processor 101, a memory 102, a communication device 103, a display device 104, an input device 105, and a speaker 106.
The processor 101 is, for example, a central processing unit CPU, a microprocessor MCU, or the like. The memory 102 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The communication device 103 is used for the electronic apparatus 100 to perform wired communication or wireless communication with other apparatuses, for example. The display device 104 is used for, for example, an interactive interface, a test result, and the like, and is, for example, a liquid crystal display. The input device 105 may be used to input operation instructions, such as a mouse, a keyboard, and the like. The speaker 106 is used to emit a warning sound, and is, for example, an electrodynamic speaker, an electromagnetic speaker, an electrostatic speaker, a piezoelectric speaker, or the like.
In addition to the above devices, the electronic apparatus 100 in the present embodiment further includes an excitation device and an acquisition device. The excitation device is used for generating an excitation signal, and the acquisition device is used for acquiring a response signal. In one example, the excitation means and the acquisition means may be the same device, e.g. the same acquisition card.
FIG. 2 is a schematic diagram of a test system that may be used to implement an embodiment of the invention. As shown in fig. 2, the test system includes an electronic device 100 and a microphone 200. Wherein, the excitation device and the collection device in the electronic device 100 are electrically connected with the microphone 200 respectively. The excitation means may apply an excitation signal to the microphone of the microphone 200 via the electrical connection and the pick-up means may pick up a response signal in the microphone via the electrical connection.
The hardware configurations described above are merely illustrative and are in no way intended to limit the present invention, its applications, or uses.
< method examples >
The present embodiment provides a method for testing microphone performance, which is implemented by the electronic device 100 in fig. 1, for example. As shown in fig. 3, the method includes the following steps S1100-S1400.
In step S1100, an excitation signal set by a user is acquired.
In this embodiment, the excitation signal is used to apply an energy signal to the microphone, thereby simulating the energy state of the microphone when activated.
In this embodiment, the excitation signal is an electrical signal, such as a voltage signal.
In one example, the excitation signal is a transient signal, or the duration of the excitation signal is less than a predetermined duration, to better simulate the conditions at the instant microphone start.
In this embodiment, the stimulus signal is set by a user (e.g., a test engineer). In one example, the electronic device 100 may obtain the user-set stimulus signal in at least one of the following ways.
The first mode is as follows: and acquiring a target signal selected by a user from a plurality of preset signals to obtain an excitation signal. The preset signal is a signal which is preset with specific parameters and is used for a user to select.
As an example, the electronic apparatus 100 may provide A, B, C three preset signals to the user through the display device. The preset signal A is a sine wave signal, the preset signal B is a rectangular pulse signal, the preset signal C is a sawtooth wave signal, and parameters such as amplitude, frequency and phase of each preset signal are preset. The user can select the target signal from the preset signals through operations of clicking, double clicking, checking and the like. The electronic device 100 will use the target signal as the excitation signal in subsequent testing steps. The mode is favorable for reducing the workload of testing personnel and improving the testing efficiency.
The second way is: and acquiring signal parameters input by a user to obtain an excitation signal.
As an example, the electronic apparatus 100 may provide a parameter setting interface to a user through a display device. The user can input or modify parameters of the excitation signal, such as amplitude, frequency, phase, waveform type, etc., through the parameter setting interface. The electronic device 100 may generate the stimulus signal according to the signal parameters submitted by the user. Thus, the method is favorable for meeting diversified test requirements.
In step S1200, an excitation signal is applied to the microphone.
In this embodiment, the electronic apparatus 100 generates an excitation signal by the excitation device and transmits the excitation signal to the microphone.
In step S1300, a response signal of the microphone under the action of the excitation signal is collected.
In this embodiment, after the excitation signal is input into the microphone, the microphone generates a response signal under the action of the excitation signal. The electronic device 100 may collect the response signal through a collecting device.
In one example, the step of acquiring the response signal comprises: and sampling the response signal for multiple times according to a preset sampling period to obtain multiple sampling values. The sampling period may be set according to practical situations, for example, 20 ms.
In step S1400, the response signal is processed according to a preset algorithm to obtain performance data.
In this embodiment, the Click and Pop performance of the microphone refers to the ability of the microphone to resist or cancel Click and Pop noise at startup.
In this embodiment, the performance data of the microphone is used to measure the Click and Pop performance of the microphone.
In one example, the step of processing the response signal comprises: firstly, filtering a response signal to obtain a filtered response signal; and secondly, obtaining performance data according to the filtered response signals.
Filtering is an operation of filtering out specific band frequencies in a signal, and can be classified into classical filtering and modern filtering. The filtering processing is beneficial to inhibiting and preventing interference and the accuracy of characteristic performance data.
In the above example, the filtering process may be a-weighted filtering. In the acoustic signal processing, the weighting method can be classified into A, B, C. The attenuation of the sound signal weighted by the weight A is very consistent with the response of human ears to sound. Therefore, the weighting filtering method A is adopted in the embodiment, which is beneficial to obtaining performance data consistent with human auditory sense.
In the above example, obtaining performance data from the filtered response signal includes: and calculating the effective value of the filtered response signal to obtain the performance data.
In this embodiment, the effective value of the response signal is calculated by the following formula:
wherein, VrmsIs an effective value of the filtered response signal, V (t) is the filtered response signal, t1As a starting time, t2Is the end time. By the above formula, the filtered response signal V (t) at t can be calculated1To t2Effective value V of time periodrms. The effective value is the final performance data.
It is easy to understand that the larger the above effective value is, the larger the Clickand Pop noise generated by the microphone is, and the worse the Click and Pop performance of the microphone is.
In addition to valid values, performance data may also be obtained from other indicators of the response signal. For example, the filtered response signal V (t) is applied at t1To t2Maximum value V in time periodmaxAs performance data. As another example, the filtered response signal V (t) is applied at t1To t2Average value V over a period of timeavgAs performance data.
In the case where the response data includes a plurality of sample values, the plurality of sample values may be processed according to a preset algorithm to obtain performance data including a plurality of performance values. For example, can be based on t1To t2Calculating effective value of sampling value in time period to obtain performance value V1According to t2To t3Calculating effective value of sampling value in time period to obtain performance value V2。
In the case where the performance data includes a plurality of performance values, a performance curve for the microphone may be generated from the plurality of performance values. For example, a performance curve in the time domain is generated by taking the time axis as the horizontal axis and the performance value as the vertical axis, and the performance curve reflects the Click and Pop performance at different moments in the microphone starting stage. Thus, the Click and Pop performance of the microphone can be visually and visually shown.
According to the method for testing the performance of the microphone, the excitation signal set by the user is applied to the microphone, the response signal is acquired, the performance data is automatically calculated according to the response signal, the excitation signal in the test can be accurately controlled, the performance of the microphone can be accurately measured, and the efficiency and the precision of the Click and Pop performance test are improved.
Fig. 4 is a flowchart of a specific example provided by the embodiment of the present invention. Referring to fig. 4, first, the tester clicks the "set" button to set the stimulus signal, i.e., performs step S11. Next, the tester selects a target signal from the plurality of preset signals, and completes the setting of the excitation signal, i.e., performs step S12. Thereafter, the tester clicks the "start" button to start the test process, i.e., performs step S13. After receiving the "start" command from the tester, the acquisition card first generates an excitation signal according to the setting information and applies the excitation signal to the microphone, i.e. step S14 is executed. In addition, the acquisition card also synchronously acquires the response signals in the microphones, i.e. executes step S15. The processor analyzes and processes the corresponding signals to obtain performance data, i.e., performs step S16. The display presents the performance data to the user, i.e., step S17 is performed. The tester may validate the performance data. If the tester confirms the result, the electronic equipment can export the performance data, and the subsequent use is convenient. If the tester does not confirm, the test flow returns to step S14 and continues.
< apparatus embodiment >
The embodiment provides a testing device for microphone performance, which comprises an acquisition module, an excitation module, an acquisition module and a processing module.
And the acquisition module is used for acquiring the excitation signal set by the user.
And the excitation module is used for applying an excitation signal to the microphone.
And the acquisition module is used for acquiring a response signal of the microphone under the action of the excitation signal.
And the processing module is used for processing the response signal according to a preset algorithm to obtain performance data.
In one example, the stimulation module, when acquiring the stimulation signal set by the user, is configured to perform at least one of the following: acquiring a target signal selected by a user from a plurality of preset signals to obtain an excitation signal; and acquiring signal parameters input by a user to obtain an excitation signal.
In one example, the processing module, when processing the response signal according to a preset algorithm to obtain the performance data, is configured to: filtering the response signal to obtain a filtered response signal; and obtaining performance data according to the filtered response signals.
In one example, the filtering process is a weighted filtering.
In one example, the processing module, when deriving the performance data from the filtered response signal, is configured to: and calculating the effective value of the filtered response signal to obtain the performance data.
In one example, the acquisition module, when acquiring the response signal of the microphone under the action of the excitation signal, is configured to: and sampling the response signal for multiple times according to a preset sampling period to obtain multiple sampling values. The processing module is used for processing the response signal according to a preset algorithm to obtain performance data: and processing the plurality of sampling values according to a preset algorithm to obtain a plurality of performance values.
In one example, the processing module is further configured to: and generating a performance curve of the microphone according to the plurality of performance values.
< electronic device embodiment >
The embodiment provides an electronic device comprising a memory and a processor.
A memory for storing executable commands.
And the processor is used for executing the method described by the embodiment of the method under the control of the executable command. For details, reference may be made to the above description of the microphone performance testing method, which is not described herein again.
< computer-readable storage Medium embodiment >
The present embodiment provides a computer-readable storage medium, which stores executable commands, and when the executable commands are executed by a processor, the method described in the method embodiment of the present invention is implemented. For details, reference may be made to the above description of the microphone performance testing method, which is not described herein again.
The present invention may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied therewith for causing a processor to implement various aspects of the present invention.
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 via 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 invention may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code 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, aspects of the present invention are implemented by personalizing an electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), with state information of computer-readable program instructions, which can execute the computer-readable program instructions.
Aspects of the present invention 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 invention. 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 invention. 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 which 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, implementation by software, and implementation by a combination of software and hardware are equivalent.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. 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 invention is defined by the appended claims.
Claims (10)
1. A method of testing microphone performance, comprising:
acquiring an excitation signal set by a user;
applying the excitation signal to the microphone;
collecting a response signal of the microphone under the action of the excitation signal;
and processing the response signal according to a preset algorithm to obtain performance data.
2. The method of claim 1, wherein the obtaining of the user-set stimulus signal comprises at least one of:
acquiring a target signal selected by a user from a plurality of preset signals to obtain the excitation signal;
and acquiring signal parameters input by a user to obtain the excitation signal.
3. The method of claim 1, wherein said processing said response signal according to a predetermined algorithm to obtain performance data comprises:
filtering the response signal to obtain a filtered response signal;
and obtaining the performance data according to the filtered response signal.
4. The method of claim 3, wherein the filtering process is a-weighted filtering.
5. The method of claim 3, wherein said deriving the performance data from the filtered response signal comprises:
and calculating the effective value of the filtered response signal to obtain the performance data.
6. The method of claim 1, wherein said acquiring a response signal of said microphone in response to said excitation signal comprises:
sampling the response signal for multiple times according to a preset sampling period to obtain multiple sampling values;
processing the response signal according to a preset algorithm to obtain performance data, including:
and processing the plurality of sampling values according to the preset algorithm to obtain a plurality of performance values.
7. The method of claim 6, further comprising:
generating a performance curve of the microphone according to the plurality of performance values.
8. A microphone performance testing device comprising:
the acquisition module is used for acquiring an excitation signal set by a user;
an excitation module for applying the excitation signal to the microphone;
the acquisition module is used for acquiring a response signal of the microphone under the action of the excitation signal;
and the processing module is used for processing the response signal according to a preset algorithm to obtain performance data.
9. An electronic device, comprising:
a memory for storing executable commands;
a processor for performing the method of any one of claims 1-7 under the control of the executable command.
10. A computer-readable storage medium storing executable instructions that, when executed by a processor, implement the method of any one of claims 1-7.
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| CN114040301A (en) * | 2021-11-15 | 2022-02-11 | 歌尔微电子股份有限公司 | Microphone quick start circuit, microphone chip and microphone |
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| CN111601224B (en) | 2022-06-10 |
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