CN111885474A - Microphone testing method and device - Google Patents

Microphone testing method and device Download PDF

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Publication number
CN111885474A
CN111885474A CN202010297063.3A CN202010297063A CN111885474A CN 111885474 A CN111885474 A CN 111885474A CN 202010297063 A CN202010297063 A CN 202010297063A CN 111885474 A CN111885474 A CN 111885474A
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response curve
acquiring
microphone
data
audio data
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邓秀珍
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Nanjing Skyworth Information Technology Research Institute Co ltd
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Nanjing Skyworth Information Technology Research Institute Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • H04R29/004Monitoring arrangements; Testing arrangements for microphones

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  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention provides a microphone testing method and device, by acquiring audio data collected by a microphone end; processing the audio data to obtain a plurality of single-channel data; acquiring a response curve according to the plurality of single-path data, and displaying the response curve; and obtaining a test result according to a preset threshold value and the response curve. This scheme can be analyzed smart machine microphone array performance defect, for example which frequency point appears the harmonic, when appear clipping, which microphone's uniformity is poor, show the data result with the form of curve graph, make things convenient for the measurement personnel to judge fast, reduce the time cost, for enterprise development smart machine saves the cost, the degree of difficulty of test has been reduced, need not special acoustics check out test set and software, thereby reach accurate testing result, especially in the product volume production stage, great manpower and material resources have been saved, the reliability of microphone test has been improved.

Description

Microphone testing method and device
Technical Field
The invention relates to the technical field of internet, in particular to a microphone testing method and device.
Background
With the development of information technology, the intelligent voice technology has become one of the most convenient and effective means for people to acquire and communicate information; a series of intelligent voice devices are appeared in the market, various microphone arrays such as linear arrays, elliptical arrays and spherical arrays are used, the product experience is seriously influenced by the voice recognition effect in the actual product research and development and mass production processes, and the noise elimination and echo elimination technology of an acoustic model plays a decisive role in end-to-end processing. In the early research and development, a structural model, a sound cavity structure and the like in a microphone array need to be tested professionally, so that a system for rapidly and conveniently evaluating non-various performance indexes of the microphone array of the intelligent voice device is researched and developed.
At present, a microphone array test lacks a wide and convenient detection system, the operation steps are complex, special acoustic detection equipment and software are needed, such as a mute room or a mute box, an artificial mouth, a standard microphone and the like, the product test is inconvenient in the mass production process, certain requirements are required for the test environment, and the research and development cost and the mass production cost are increased. Therefore, the prior art test of microphone arrays is not reliable.
Disclosure of Invention
The embodiment of the invention provides a microphone testing method and device, which improve the reliability of microphone array testing.
In a first aspect, the present invention provides a microphone testing method, including:
acquiring audio data collected by a microphone end;
processing the audio data to obtain a plurality of single-channel data;
acquiring a response curve according to the plurality of single-path data, and displaying the response curve;
and obtaining a test result according to a preset threshold value and the response curve.
Optionally, in a possible implementation manner of the first aspect, the response curve comprises a time domain response curve;
correspondingly, the acquiring a response curve according to the plurality of single-path data and displaying the response curve includes:
and acquiring a time domain response curve according to the plurality of single-path data, and displaying the time domain response curve.
Optionally, in a possible implementation manner of the first aspect, the obtaining a time domain response curve according to the plurality of single-channel data includes:
acquiring a time domain DB value according to the single-path data;
and acquiring a time domain response curve according to the amplitude and the time domain DB value.
Optionally, in a possible implementation manner of the first aspect, the response curve comprises a frequency domain response curve;
correspondingly, the acquiring a response curve according to the plurality of single-path data and displaying the response curve includes:
and acquiring a frequency domain response curve according to the plurality of single-path data, and displaying the frequency domain response curve.
Optionally, in a possible implementation manner of the first aspect, the obtaining a time domain response curve according to the plurality of single-channel data includes:
obtaining a frequency domain DB value according to the plurality of single-path data;
and acquiring the time domain response curve according to the frequency and the frequency domain DB value.
Optionally, in a possible implementation manner of the first aspect, before the acquiring the audio data collected by the microphone end, the method further includes:
acquiring preset recording data, and sending the preset recording data to the microphone end for playing;
and the microphone end collects the played preset recording data and acquires the audio data.
Optionally, in a possible implementation manner of the first aspect, before the acquiring the audio data collected by the microphone end, the method further includes:
and determining that the microphone end stores the audio data.
Optionally, in a possible implementation manner of the first aspect, after obtaining a test result according to a preset threshold and the response curve, the method further includes:
and deriving the test result.
In a second aspect, the present invention provides a microphone testing apparatus, comprising:
the acquisition module is used for acquiring audio data acquired by the microphone end;
the splitting module is used for processing the audio data to obtain a plurality of single-channel data;
the processing module is used for acquiring a response curve according to the plurality of single-path data and displaying the response curve;
and the result module is used for acquiring a test result according to a preset threshold value and the response curve.
In a third aspect, the present invention provides a microphone testing device comprising: memory, a processor and a computer program, the computer program being stored in the memory, the processor running the computer program to perform the method of the first aspect of the invention and its various possible designs.
A fourth aspect of the embodiments of the present invention provides a readable storage medium, in which a computer program is stored, and the computer program is used for implementing the method according to the first aspect of the present invention and various possible designs of the first aspect of the present invention when the computer program is executed by a processor.
The invention provides a microphone testing method and device, by acquiring audio data collected by a microphone end; processing the audio data to obtain a plurality of single-channel data; acquiring a response curve according to the plurality of single-path data, and displaying the response curve; and obtaining a test result according to a preset threshold value and the response curve. This scheme can be analyzed smart machine microphone array performance defect, for example which frequency point appears the harmonic, when appear clipping, which microphone's uniformity is poor, show the data result with the form of curve graph, make things convenient for the measurement personnel to judge fast, reduce the time cost, for enterprise development smart machine saves the cost, the degree of difficulty of test has been reduced, need not special acoustics check out test set and software, thereby reach accurate testing result, especially in the product volume production stage, great manpower and material resources have been saved, the reliability of microphone test has been improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic flow chart of a microphone testing method according to the present invention;
FIG. 2 is a block diagram of a microphone testing apparatus according to the present invention;
fig. 3 is a schematic diagram of a hardware structure of a microphone testing device according to an embodiment of the present invention.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
It should be understood that, in various embodiments of the present invention, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
It should be understood that in the present application, "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The following describes the technical solutions of the present invention and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a microphone test detection method provided by the present invention, and an execution main body of the method shown in fig. 1 may be a software and/or hardware device. The method shown in fig. 1 includes steps S101 to S104, which are specifically as follows:
s101, audio data collected by a microphone end are obtained.
In particular, the microphone end may be disposed at the television end for playing audio data of the television end, and it may be an array microphone, and it is understood that the array microphone may include a plurality of microphones. Thus, the multiple audio data may be a plurality of audio data corresponding to a plurality of microphones. For example, one microphone may correspond to one audio data, and specifically, if there are 5 microphones, 5 paths of audio data at the microphone end are acquired.
In practical applications, before the acquiring the audio data collected by the microphone end, the method further includes: acquiring preset recording data, and sending the preset recording data to the microphone end for playing; and the microphone end collects the played preset recording data and acquires the audio data. It is understood that the audio data may be data generated by the microphone end from a segment of audio recorded by the microphone end, for example, a linear 20 Hz-20 KHz sweep audio signal and a logarithmic 20 Hz-20 KHz sweep audio signal recorded by the microphone end.
It should be noted that, before the acquiring the audio data collected by the microphone end, the method further includes: and determining that the microphone end stores the audio data.
And S102, processing the audio data to obtain a plurality of single-channel data.
Specifically, since the microphone end may be composed of multiple microphones, in order to check each path of data of the microphone, it is necessary to process the audio data into multiple single paths of data, and then process each path of audio data.
S103, acquiring a response curve according to the single-path data, and displaying the response curve.
Specifically, the audio signal data of each channel may be subjected to time domain and frequency domain analysis processing, where the analysis processing may include: and FFT (fast Fourier transform), average value, standard variance calculation, threshold range judgment and the like are carried out on the audio related performance parameters, and then a time domain DB value and a frequency domain DB value are obtained, and further a response curve is obtained and displayed to a user.
Illustratively, the response curve includes a time domain response curve, and the time domain response curve may be obtained according to the plurality of single-channel data and displayed. Specifically, a time domain DB value is obtained according to the plurality of single-path data, and a time domain response curve is obtained according to the amplitude and the time domain DB value.
As another example, the response curve includes a frequency domain response curve, and the frequency domain response curve may be obtained according to the plurality of single-path data and displayed. Specifically, a frequency domain DB value is obtained according to the plurality of pieces of single-path data, and the time domain response curve is obtained according to the frequency and the frequency domain DB value.
Wherein, the process of calculating the time domain DB value is as follows:
and calculating the decibel DB value of each path of audio data time domain according to the length with the step length of N, wherein the formula is as follows:
Figure RE-GDA0002686739570000061
wherein XiFor the collected audio data, N is the length of the collected audio data, and s is the sampling bit depth of the audio.
And S104, obtaining a test result according to a preset threshold value and the response curve.
Specifically, after the response curve is obtained, a curve related to a preset threshold may be displayed on the response curve at the same time, and then observed according to a comparison between the two curves to obtain a test result. Or the test data can be visually acquired according to the response curve and then compared with a preset threshold value to acquire a test result. It can be understood that the performance defects in the microphone array of the intelligent device can be analyzed by the performance detection of the microphone array, for example, which frequency points generate harmonic waves, when the wave clipping occurs, the consistency of which microphone is poor, the data result is displayed in a curve graph form, the rapid judgment of detection personnel is convenient, the time cost is reduced, the cost is saved for enterprise development of the intelligent device, the difficulty of the test is reduced, special acoustic detection equipment and software are not needed, the accurate detection result is achieved, particularly, in the stage of mass production of products, the manpower and material resources are greatly saved, and the reliability of the microphone test is improved.
In practical application, after obtaining a test result according to a preset threshold and the response curve, the method further includes: and deriving the test result. For example, the result data may be exported to the U-disk one key.
Fig. 2 is a schematic structural diagram of a microphone testing apparatus according to the present invention, and the array microphone testing apparatus 20 shown in fig. 2 includes:
the acquisition module 21 is configured to acquire audio data acquired by a microphone end;
the splitting module 22 is configured to process the audio data to obtain a plurality of single-channel data;
the processing module 23 is configured to obtain a response curve according to the plurality of single-path data and display the response curve;
and a result module 24, configured to obtain a test result according to a preset threshold and the response curve.
The array microphone testing apparatus of the embodiment shown in fig. 2 can be correspondingly used to perform the steps of the method embodiment shown in fig. 1, and the implementation principle and technical effect are similar, and are not described herein again.
Optionally, the response curve comprises a time domain response curve;
correspondingly, the processing module 23 is specifically configured to obtain a time domain response curve according to the plurality of single-channel data, and display the time domain response curve.
Optionally, the processing module 23 is further configured to obtain a time domain DB value according to the plurality of single-channel data; and acquiring a time domain response curve according to the amplitude and the time domain DB value.
Optionally, the response curve comprises a frequency domain response curve;
correspondingly, the processing module 23 is specifically configured to obtain a frequency domain response curve according to the plurality of single-channel data, and display the frequency domain response curve.
Optionally, the processing module 23 is further configured to obtain a frequency domain DB value according to the plurality of single-path data; and acquiring the time domain response curve according to the frequency and the frequency domain DB value.
Optionally, the acquisition module 21 is further configured to acquire preset recording data, and send the preset recording data to the microphone end for playing; and the microphone end collects the played preset recording data and acquires the audio data.
Optionally, the acquisition module 21 is further configured to determine that the microphone end stores the audio data.
Optionally, the result module 24 is further configured to derive the test result.
Referring to fig. 3, which is a schematic diagram of a hardware structure of a microphone testing apparatus according to an embodiment of the present invention, the microphone testing apparatus 30 includes: a processor 31, a memory 32 and a computer program; wherein
A memory 32 for storing a computer program, which may also be a flash memory (flash). The computer program is, for example, an application program, a functional module, or the like that realizes the above method.
A processor 31 for executing the computer program stored in the memory to implement the steps performed by the apparatus in the above method. Reference may be made in particular to the description relating to the preceding method embodiment.
Alternatively, the memory 32 may be separate or integrated with the processor 31.
When the memory 32 is a device independent of the processor 31, the apparatus may further include:
a bus 33 for connecting the memory 32 and the processor 31.
The present invention also provides a readable storage medium, in which a computer program is stored, which, when being executed by a processor, is adapted to implement the methods provided by the various embodiments described above.
The readable storage medium may be a computer storage medium or a communication medium. Communication media includes any medium that facilitates transfer of a computer program from one place to another. Computer storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, a readable storage medium is coupled to the processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Additionally, the ASIC may reside in user equipment. Of course, the processor and the readable storage medium may also reside as discrete components in a communication device. The readable storage medium may be a read-only memory (ROM), a random-access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
The present invention also provides a program product comprising execution instructions stored in a readable storage medium. The at least one processor of the device may read the execution instructions from the readable storage medium, and the execution of the execution instructions by the at least one processor causes the device to implement the methods provided by the various embodiments described above.
In the above embodiments of the apparatus, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A microphone testing method, comprising:
acquiring audio data collected by a microphone end;
processing the audio data to obtain a plurality of single-channel data;
acquiring a response curve according to the plurality of single-path data, and displaying the response curve;
and obtaining a test result according to a preset threshold value and the response curve.
2. The method of claim 1, wherein the response curve comprises a time domain response curve;
correspondingly, the acquiring a response curve according to the plurality of single-path data and displaying the response curve includes:
and acquiring a time domain response curve according to the plurality of single-path data, and displaying the time domain response curve.
3. The method of claim 2, wherein obtaining a time domain response curve from the plurality of single pass data comprises:
acquiring a time domain DB value according to the single-path data;
and acquiring a time domain response curve according to the amplitude and the time domain DB value.
4. The method of claim 1, wherein the response curve comprises a frequency domain response curve;
correspondingly, the acquiring a response curve according to the plurality of single-path data and displaying the response curve includes:
and acquiring a frequency domain response curve according to the plurality of single-path data, and displaying the frequency domain response curve.
5. The method of claim 4, wherein obtaining a time domain response curve from the plurality of single pass data comprises:
obtaining a frequency domain DB value according to the plurality of single-path data;
and acquiring the time domain response curve according to the frequency and the frequency domain DB value.
6. The method of claim 1, further comprising, prior to the acquiring the audio data collected at the microphone end:
acquiring preset recording data, and sending the preset recording data to the microphone end for playing;
and the microphone end collects the played preset recording data and acquires the audio data.
7. The method of claim 6, further comprising, prior to the acquiring the audio data collected at the microphone end:
and determining that the microphone end stores the audio data.
8. The method of claim 1, after obtaining the test result according to the preset threshold and the response curve, further comprising:
and deriving the test result.
9. A microphone testing device, comprising:
the acquisition module is used for acquiring audio data acquired by the microphone end;
the splitting module is used for processing the audio data to obtain a plurality of single-channel data;
the processing module is used for acquiring a response curve according to the plurality of single-path data and displaying the response curve;
and the result module is used for acquiring a test result according to a preset threshold value and the response curve.
10. A microphone testing apparatus, comprising: memory, a processor and a computer program, the computer program being stored in the memory, the processor running the computer program to perform the method of any of claims 1 to 8.
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Application publication date: 20201103