CN110636432A

CN110636432A - Microphone testing method and related equipment

Info

Publication number: CN110636432A
Application number: CN201910937124.5A
Authority: CN
Inventors: 郑定才; 胡震宇
Original assignee: Shenzhen Huole Science and Technology Development Co Ltd
Current assignee: Shenzhen Huole Science and Technology Development Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2019-12-31

Abstract

The application discloses microphone test method is applied to intelligent projectors comprising N microphones, and the method comprises the following steps: acquiring first test audio through the N microphones respectively to obtain N paths of first audio signals, wherein the N paths of first audio signals correspond to the N microphones one by one, the intelligent projector is placed in a silencing box at present, and N is an integer greater than 1; respectively determining first decibel values of the N paths of first audio signals; according to the determined N first scores, consistency evaluation is carried out on the N microphones, and under the condition that the consistency of the N microphones is qualified, the sealing performance of the N microphones is evaluated; and determining that the test of the N microphones is qualified under the condition that the sealing property of the N microphones is qualified. The performance of the microphone can be ensured by adopting the embodiment.

Description

Microphone testing method and related equipment

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a microphone testing method and related devices.

Background

With the wide application of various portable electronic products, microphones have become indispensable supplementary communication tools in people's lives, and in order to make them have high sound quality, it is necessary to detect the performance of the microphones before shipping. At present, testing of a microphone is mainly performed by professional staff, and accuracy cannot be guaranteed.

Disclosure of Invention

The embodiment of the application provides a microphone testing method and related equipment, which are used for improving the accuracy of microphone testing.

In a first aspect, an embodiment of the present application provides a microphone testing method, which is applied to an intelligent projector including N microphones, and the method includes:

acquiring first test audio through the N microphones respectively to obtain N paths of first audio signals, wherein the N paths of first audio signals correspond to the N microphones one by one, the intelligent projector is placed in a silencing box at present, and N is an integer greater than 1;

respectively determining first decibel values of the N paths of audio signals;

and performing consistency evaluation on the N microphones according to the determined N first scores.

In a second aspect, an embodiment of the present application provides an apparatus for microphone testing, the apparatus including:

the intelligent projector comprises a collecting unit, a processing unit and a control unit, wherein the collecting unit is used for respectively collecting first test audio through the N microphones to obtain N paths of first audio signals, the N paths of first audio signals correspond to the N microphones one by one, the intelligent projector is currently placed in a silencing box, and N is an integer greater than 1;

a first determining unit, configured to determine first decibel values of the N paths of first audio signals, respectively;

the first evaluation unit is used for carrying out consistency evaluation on the N microphones according to the determined N first scores;

the second evaluation unit is used for evaluating the sealing performance of the N microphones under the condition that the consistency of the N microphones is qualified;

and the second determining unit is used for determining that the test of the N microphones is qualified under the condition that the sealing property of the N microphones is qualified.

In a third aspect, an embodiment of the present application provides an intelligent projector, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps in the method according to the first aspect of the embodiment of the present application.

In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the method according to the first aspect of the present application.

In a fifth aspect, the present application provides a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps described in the method according to the first aspect of the present application. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the application, the intelligent projector firstly collects the test audio through the plurality of microphones respectively to obtain corresponding multi-channel audio signals, then determines a plurality of corresponding sound decibel values according to the multi-channel audio signals, and then evaluates the consistency of the plurality of sound decibel values, and under the condition that the consistency evaluation is qualified, evaluates the sealing performance of the microphones, the microphone test does not need manual participation, and the audio collection is carried out in the sound attenuation box, so that the test audio interference factor is small, and the accuracy of the microphone test is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1A is a schematic structural diagram of a microphone testing system according to an embodiment of the present disclosure;

fig. 1B is a schematic structural diagram of an intelligent projector according to an embodiment of the present application;

fig. 2A is a schematic flowchart of a microphone testing method according to an embodiment of the present disclosure;

FIG. 2B is a schematic diagram of a setup interface provided by an embodiment of the present application;

FIG. 3 is a schematic flow chart of another microphone testing method provided in the embodiments of the present application;

fig. 4 is a schematic structural diagram of an intelligent projector according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a microphone testing apparatus according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.

The following are detailed below.

The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.

Referring to fig. 1A, fig. 1A is a schematic structural diagram of a microphone testing system provided in an embodiment of the present application, where the microphone testing system includes an intelligent projector, a sound muffling box, and an audio output device. Wherein, the sound muffling box is used for eliminating external noise, and audio output equipment is used for exporting the test audio, and intelligent projecting apparatus includes a plurality of microphones, gathers the test audio through a plurality of microphones, and audio output equipment and intelligent projecting apparatus all are placed in the sound muffling box. The smart projector, sound muffling box and output audio device shown in fig. 1A are only examples and do not limit the embodiments of the present application.

The smart projector may include, among other things, various projection devices with wireless communication capabilities, in-vehicle projection devices, portable projection devices, computing devices, or other processing devices connected to a wireless modem.

As shown in fig. 1B, fig. 1B is a schematic structural diagram of an intelligent projector according to an embodiment of the present application. The smart projector includes a microphone module, an audio output device, an audio processor, a communication interface, a lamp operating power supply, a processor, a Memory, a Random Access Memory (RAM), and the like. The communication interface is connected with the signal processor, and the microphone module, the audio output device, the audio processor, the lamp working power supply, the RAM and the memory are all connected with the processor.

The lamp operating power supply is a power supply peculiar to the projector, and therefore it requires a starting voltage of several kv to twenty kv to break down the metal element gas between the two electrodes and then to be changed to a normal power supply.

The processor is a control center of the intelligent projector, various interfaces and lines are used for connecting all parts of the whole intelligent projector, and various functions and processing data of the intelligent projector are executed by running or executing software programs and/or modules stored in the memory and calling data stored in the memory, so that the intelligent projector is monitored integrally.

The processor may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor.

The storage is used for storing software programs and/or modules, and the processor executes various functional applications and data processing of the intelligent projector by running the software programs and/or modules stored in the storage. The memory mainly comprises a program storage area and a data storage area, wherein the program storage area can store an operating system, a software program required by at least one function and the like; the storage data area may store data created according to the use of the smart projector, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The following describes embodiments of the present application in detail.

Referring to fig. 2A, fig. 2A is a schematic flowchart of a microphone testing method provided in an embodiment of the present application, and is applied to an intelligent projector including N microphones, and the method specifically includes the following steps:

step 201: the N microphones respectively collect first test audio to obtain N paths of first audio signals, the N paths of first audio signals correspond to the N microphones one to one, the intelligent projector is placed in the silencer at present, and N is an integer larger than 1.

The first test audio may be a pre-recorded audio or a live randomly played audio. If the first test audio is in the audio format closest to the lossless audio format, the collection quality of the first test audio by the microphone can be improved.

The type of the first test audio may be a single frequency audio, a single frequency audio sequence, a mute audio, a white noise sequence, or the like.

Optionally, to improve the accuracy of the performance evaluation, a single-frequency audio sequence, a mute audio, a white noise and a white noise sequence may be integrated into the same segment of audio to form a test audio of all the audio required in the performance test.

Wherein, N microphones all gather first test audio through its pickup card that possesses.

Each of the N microphones collects a first audio to obtain an audio signal, and determines a corresponding sound decibel value according to the collected audio signal.

The sound-deadening box is, for example, a vacuum see-through glass box, or other devices capable of isolating external sound.

In an implementation manner of the present application, before step 201, the method further includes:

the intelligent projector starts the microphone collection function first. The specific implementation mode of the intelligent projector starting microphone acquisition function is as follows: the method comprises the steps that an intelligent projector displays a microphone setting interface, wherein the setting interface comprises a microphone setting item, the microphone setting item comprises a microphone setting switch, and a microphone is in a closed state currently; in the case of detecting a click operation on the microphone setting switch, the smart projector places the microphone setting item in an on state and starts a microphone collection function, and a setting interface is as shown in fig. 2B.

In one implementation of the present application, before step 201, determining the volume of the first test audio includes: and calibrating the sound pressure levels of the positions of the N microphones to be tested by adopting an alternative method so as to determine the volume of the first test audio. During calibration, the intelligent projector comprising the N microphones is moved out of the sound muffling box, and the standard sound pickup equipment is placed at the original positions of the N microphones to be tested. Then, the standard sound pickup equipment respectively collects first audio signals of 1khz and 0 decibel (dB), and the first audio signals collected by the sound pickup equipment are analyzed through the computing equipment to judge whether the standard sound pressure level is 94 dB. And if the sound pressure level of the first audio signal collected by the standard sound pickup equipment is not the standard sound pressure level, adjusting the volume of the first audio signal until the sound pressure level at the standard sound pickup equipment is the standard sound pressure level. After the sound pressure level at the standard tone pickup apparatus was adjusted, the standard tone pickup apparatus was moved out of the sound muffling box, and the intelligent projector including the N microphones was put into the sound muffling box.

Step 202: and respectively determining first decibel values of the N paths of first audio signals.

The first decibel value is, for example, 85dB, 90dB, 92dB, 98dB, or other values.

And the N paths of first audio signals correspond to the N first decibel values one by one.

Wherein the first decibel value is used to represent the intensity of the audio signal, and the greater the first decibel value is, the greater the sound intensity is.

Step 203: and performing consistency evaluation on the N microphones according to the determined N first scores.

Wherein, the consistency evaluation of the N microphones can be used to indicate the position distribution of the N microphones or to guide the design of the position distribution of the N microphones.

For example, when the evaluation result shows that the consistency of the microphones 1, 2 and 3 is poor, it may indicate that there is a problem in the location distribution of the microphones 1, 2 and 3, and may instruct to redesign the location distribution of the microphones 1, 2 and 3.

Step 204: and evaluating the sealing performance of the N microphones under the condition that the consistency of the N microphones is qualified.

Step 205: and determining that the performance test of the N microphones is qualified under the condition that the sealing performance of the N microphones is qualified.

In an implementation manner of the present application, the first test audio is generated by an audio output device, the audio output device is currently placed in the sound muffling box, and the audio output device outputs the first test audio by using a first output policy, where the first output policy is to play the first test audio at a first time and stop playing the first test audio at a second time; through N microphones gather first test audio respectively, obtain N way first audio signal, include:

and controlling the N microphones to collect a first test audio by using a first collection strategy, wherein the first collection strategy is to collect the first test audio at a third moment and stop collecting the first test audio at a fourth moment, the first moment is earlier than the third moment, and the fourth moment is earlier than the second moment.

The position relation between the audio output device and the N microphones needs to satisfy the following points: the N microphones and the audio output equipment are positioned on the same horizontal line; the sound pickup ends of the N microphones face to the sound production end of the audio output equipment.

The audio output device may be a speaker, a tablet, a mobile phone, or other devices with audio output function.

And determining the playing mode of the first test video based on the first duration, the second duration and the first mapping relation of the playing mode of the first test audio. The first mapping relationship is shown in table 1, and as shown in table 1, the first video playing modes corresponding to different first time lengths and second time lengths may be the same or different.

TABLE 1

First time length	Second duration	Playing mode of first test video
			2min	1.5min	Timed play
4min	3min	Single play
			7min	5min	Circular playing
……	……	……

The audio output device starts or stops playing the first test audio through a first timer, and the specific implementation manner is as follows: and starting a first timer at a first moment, starting the audio output equipment to play the first test audio, wherein the fixed time length of the first timer is the first time length, and when the first timer is over time, the audio output equipment stops playing the first test audio.

Wherein, intelligence projecting apparatus control N microphone is to beginning or stop the collection to first test audio frequency, and specific implementation has: and starting a second timer at the third moment, wherein the N microphones start to collect the first test audio, the fixed time length of the second timer is a second time length, and when the second timer is over time, the N microphones stop collecting the first test audio.

It can be seen that, in the embodiment of the application, the mode of playing the first test audio by the audio output device is determined according to the duration of playing the first test audio by the audio output device and the duration of acquiring the first test audio by the N microphones, so that the flexibility of playing the first test video is improved.

In an implementation manner of the present application, each of the N first audio signals is continuous, and the determining the first decibel values of the N first audio signals respectively includes:

respectively sampling the N paths of first audio signals to obtain N groups of discrete first audio signals;

quantizing the N groups of discrete first audio signals respectively to obtain N groups of first audio data;

determining a first sampling interval, and respectively sampling the N groups of first audio data according to the first sampling interval to obtain N groups of first sampling data;

and determining N first decibel values according to the N groups of first sampling data.

The N paths of first audio signals correspond to the N groups of discrete first audio signals one by one.

Wherein, N groups of discrete first audio signals correspond to N groups of first audio data one by one.

Wherein the N groups of first audio data and the N groups of first sample data are in one-to-one correspondence.

And the N groups of first sampling data correspond to the N first decibel values one by one.

Each of the N first audio signals is an analog signal that is continuous in time, sampling is to extract an instantaneous amplitude value of each first audio signal at intervals of a first fixed value, and each first audio signal that is continuous in time is changed into a first audio signal that is discrete in time, where the smaller the first fixed value is, the more data of the instantaneous amplitude value is sampled, and the more accurate the evaluation of the microphone performance is.

The N groups of discrete first audio signals are respectively quantized, namely, each group of discrete first audio signals in the N groups of discrete first audio signals are subjected to discretization processing according to quantization values, instantaneous amplitude values are converted into amplitude values, addition and subtraction between the amplitude values are achieved, and the larger the quantization value is, the more accurate the evaluation on the performance of the microphone is.

Wherein the first sampling interval is a first sampling data interval, the first sampling interval may be 2, 4, 5, 8, or other values, and the smaller the first sampling interval, the more accurate the evaluation of the microphone performance.

For example, there is a set of audio data (80, 83, 85, 89, 93, 96, 98, 102, 122, 130), the first sampling interval is 2, and the audio data after sampling according to the first sampling interval is (80, 89, 98, 130).

Wherein the first decibel value is an average of the first sample data sum.

For example, there are 2 sets of first sample data (80, 83, 85, 89, 93, 96) and (89, 93, 96, 98, 102, 122), and the corresponding first decibel values are 87.67 and 100, respectively.

It can be seen that in the embodiment of the present application, the first decibel value is determined only through sampling, quantization and sampling, and the calculation load of the intelligent projector is reduced.

In an implementation manner of the present application, the sampling the N paths of first audio signals respectively to obtain N groups of discrete first audio signals includes:

determining a first frequency based on the frequencies of the N paths of first audio signals, wherein the first frequency is greater than or equal to N times of the highest frequency of the N paths of first audio signals, and N is an integer greater than 1;

and respectively sampling the N paths of first audio signals by using a first frequency to obtain N groups of discrete first audio signals.

The first frequency is greater than or equal to N times of the highest frequency of the N paths of first audio signals, so as to ensure that no information is lost after the first audio signals are sampled by using the first frequency, and the original first audio signals can be recovered from the sampled discrete first audio signals without distortion. That is, under the condition that the first frequency is greater than or equal to N times of the highest frequency of the N paths of first audio signals, the temporally discrete first audio signals contain all information of the first audio signals.

It can be seen that, in the embodiment of the present application, the audio signal before sampling can be recovered through the sampled discrete audio signal, and the application range of the intelligent projector can be further improved.

In an implementation manner of the present application, the performing consistency evaluation on the N microphones according to the determined N first scores includes: and determining that the consistency of the N microphones is qualified under the condition that the N first decibel values are all in the first range.

The first range may be the same or different for different application scenarios.

Optionally, the first range is determined based on different application scenarios and a second mapping relationship, where the second mapping relationship is a mapping relationship between the application scenario and the first range.

The second mapping relationship is shown in table 2, and as shown in table 2, the higher the requirement of the application scenario on the microphone is, the smaller the first range is.

TABLE 2

Application scenarios	First range
		Concert	(93,95)
Host	(92,96)
		Communication system	(90,96)
……	……

It can be seen that in the embodiment of the application, the first range is set according to different application scenarios, so that the microphone testing method can meet the requirements of different scenarios.

In an implementation manner of the present application, in a case that the consistency of the N microphones is qualified, the method further includes:

acquiring second test audio through the N microphones respectively to obtain N paths of second audio signals, wherein the N paths of second audio signals correspond to the N microphones one to one, the intelligent projector is currently placed in the silencing box, and sound outlet holes of the N microphones are currently blocked by a sealing material;

respectively determining second decibel values of the N paths of second audio signals;

and performing confidentiality evaluation on the N microphones according to the determined N second scores.

Wherein the second test audio may be the same as or different from the first test audio.

The second test audio may be a pre-recorded audio or a live randomly played audio.

The type of the second test audio may be a single frequency audio, a single frequency audio sequence, a mute audio, a white noise sequence, or the like.

The sealing material may be a rubber sealing block, or other sealing materials such as a silicone sealing block.

Wherein determining a second decibel value for the N second audio signals comprises:

the audio output equipment outputs the second test audio by using a third output strategy, wherein the third output strategy is to play the second test audio at a fifth moment and stop playing the second test audio at a sixth moment;

controlling the N microphones to collect a second test audio by using a second collection strategy, wherein the second collection strategy is to collect the second test audio at a seventh moment and stop collecting the second test audio at an eighth moment, the fifth moment is earlier than the seventh moment, and the fourth moment is earlier than the sixth moment;

respectively sampling the N paths of second audio signals to obtain N groups of discrete second audio signals;

quantizing the N groups of discrete second audio signals respectively to obtain N groups of second audio data;

determining a second sampling interval, and respectively sampling the N groups of second audio data according to the second sampling interval to obtain N groups of second sampling data;

and determining N second decibel values according to the N groups of second sampling data.

It can be seen that in the embodiment of the application, under the condition that the consistency of the plurality of microphones is qualified, the tightness of the microphones is evaluated, and the computing resources are effectively saved.

In an implementation manner of the present application, the performing, according to the determined N second decibel values, confidentiality evaluation on the N microphones includes:

and determining that the sealing performance of the N microphones is qualified under the condition that the N second decibel values are all in a second range, wherein the first range is different from the second range.

Wherein, the second range may be the same or different for different application scenarios.

Optionally, the second range is determined based on a different application scenario and a third mapping relationship, where the second mapping relationship is a mapping relationship between the application scenario and the first range.

The second mapping relationship is shown in table 3, and as shown in table 3, the higher the requirement of the application scenario on the microphone is, the smaller the second range is.

TABLE 3

Application scenarios	First range
		Communication system	(1,3)
Speech sound	(1,4)
		Host	(0,5)
……	……

It can be seen that in the embodiment of the application, the sealing performance is evaluated, the phenomenon that the microphone has echo and even howling in the using process is prevented, and the performance of the microphone is ensured.

Referring to fig. 3, fig. 3 is a schematic flow chart of another microphone testing method according to an embodiment of the present application, which is applied to the intelligent projector including N microphones, and includes the following steps:

step 301: an audio output device outputs the first test audio using a first output strategy.

The first output strategy is to play the first test audio at a first moment and stop playing the first test audio at a second moment.

Wherein the audio output device is currently placed in the sound box.

Step 302: and controlling the N microphones to collect the first test audio by using a first collection strategy to obtain N paths of first audio signals.

The first acquisition strategy is to acquire the first test audio at a third moment and stop acquiring the first test audio at a fourth moment, wherein the first moment is earlier than the third moment and the fourth moment is earlier than the second moment.

Wherein the smart projector is currently placed in a sound box.

The N paths of first audio signals correspond to the N microphones one by one, the intelligent projector is placed in the sound attenuation box at present, and N is an integer larger than 1.

Step 303: a first frequency is determined based on the frequencies of the N first audio signals.

Step 304: and respectively sampling the N paths of first audio signals by using a first frequency to obtain N groups of discrete first audio signals.

Step 305: and quantizing the N groups of discrete first audio signals respectively to obtain N groups of first audio data.

Step 306: and determining a first sampling interval, and respectively sampling the N groups of first audio data according to the first sampling interval to obtain N groups of first sampling data.

Step 307: and judging whether the N first decibel values are all in a first range.

If yes, go to step 308;

if not, no operation is performed.

Step 308: and acquiring second test audio through the N microphones respectively to obtain N paths of second audio signals.

The N paths of second audio signals correspond to the N microphones one by one, the intelligent projector is placed in the sound attenuation box at present, and sound outlet holes of the N microphones are blocked by sealing materials at present.

Step 309: and respectively determining second decibel values of the N paths of second audio signals.

Step 310: and judging whether the N second decibel values are all in a second range.

Wherein the first range is different from the second range.

If yes, go to step 311;

if not, no operation is performed.

Step 311: and the sealing property of the N microphones is qualified.

Step 312: and the N microphones are tested to be qualified.

It should be noted that, for the specific implementation process of the present embodiment, reference may be made to the specific implementation process described in the above method embodiment, and a description thereof is omitted here.

In accordance with the embodiment shown in fig. 2A and fig. 3, please refer to fig. 4, and fig. 4 is a schematic structural diagram of an intelligent projector according to an embodiment of the present application, and as shown in the drawing, the intelligent projector includes a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for performing the following steps:

in an implementation manner of the present application, the first test audio is generated by an audio output device, the audio output device is currently placed in the sound muffling box, and the audio output device outputs the first test audio by using a first output policy, where the first output policy is to play the first test audio at a first time and stop playing the first test audio at a second time; in the aspect that the N microphones respectively collect first test audios to obtain N paths of first audio signals, the program includes instructions specifically configured to execute the following steps:

and controlling the N microphones to respectively collect first test audios by using a first collection strategy, wherein the first collection strategy is to collect the first test audios at a third moment and stop collecting the first test audios at a fourth moment, the first moment is earlier than the third moment, and the fourth moment is earlier than the second moment.

In an implementation manner of the present application, each of the N first audio signals is continuous, and in the aspect of respectively determining the first decibel values of the N first audio signals, the program includes instructions specifically configured to perform the following steps:

In an implementation manner of the present application, in terms of sampling the N paths of first audio signals respectively to obtain N groups of discrete first audio signals, the program includes instructions specifically configured to perform the following steps:

In an implementation of the present application, in terms of performing a consistency evaluation on the N microphones according to the determined N first scores, the program includes instructions specifically configured to perform the following steps:

and determining that the consistency of the N microphones is qualified under the condition that the N first decibel values are all in the first range.

In an implementation manner of the present application, in a case that the consistency of the N microphones is qualified, the confidentiality of the N microphones is evaluated, where the program includes instructions for further performing the following steps:

In an implementation manner of the present application, in terms of performing confidentiality evaluation on the N microphones according to the determined N second scores, the program specifically further includes instructions for performing the following steps:

Referring to fig. 5, fig. 5 is a schematic diagram of a microphone testing apparatus applied to an intelligent projector including N microphones according to an embodiment of the present application, where the apparatus includes:

the acquisition unit 501 is configured to acquire first test audio through the N microphones respectively to obtain N paths of first audio signals, where the N paths of first audio signals correspond to the N microphones one to one, the intelligent projector is currently placed in the sound muffling box, and N is an integer greater than 1;

a first determining unit 502, configured to determine N first decibel values of the N first audio signals respectively;

a first evaluation unit 503, configured to perform consistency evaluation on the N microphones according to the determined N first scores;

the second evaluation unit 504: the microphone is used for evaluating the sealing performance of the N microphones under the condition that the consistency of the N microphones is qualified;

the second determination unit 505: and the testing device is used for determining that the N microphones pass the test if the N microphones are qualified in sealing.

In an implementation manner of the present application, the first test audio is generated by an audio output device, the audio output device is currently placed in the sound muffling box, and the audio output device outputs the first test audio by using a first output policy, where the first output policy is to play the first test audio at a first time and stop playing the first test audio at a second time; in the aspect that the N microphones respectively collect first test audios to obtain N paths of first audio signals, the collecting unit 501 is further configured to:

In an implementation manner of the present application, each of the N first audio signals is continuous, and in the aspect of respectively determining the first decibel values of the N first audio signals, the first determining unit 502 is further configured to:

In an implementation manner of the present application, in the aspect that the N paths of first audio signals are respectively sampled to obtain N groups of discrete first audio signals, the acquisition unit 501 is further configured to:

In an implementation manner of the present application, in the performing consistency evaluation on the N microphones according to the determined N first scores, the first evaluation unit 503 is further configured to:

In an implementation manner of the present application, in terms of evaluating the sealing performance of the N microphones when the consistency of the N microphones is qualified, the second evaluating unit 504 is further configured to:

the N microphones are used for respectively collecting second test audio to obtain N paths of second audio signals, the N paths of second audio signals correspond to the N microphones one to one, the intelligent projector is placed in the silencer, and sound outlet holes of the N microphones are currently blocked by sealing materials.

In an implementation manner of the present application, after determining that the consistency of the N microphones is qualified, the first determining unit 502 is further configured to:

and respectively determining second decibel values of the N paths of second audio signals.

In an implementation manner of the present application, in the performing, according to the determined N second scores, confidentiality evaluation on the N microphones, the first determining unit 502 is further configured to:

It should be noted that the acquisition unit 501, the first determination unit 502, the first evaluation unit 503, the second evaluation unit 504, and the second determination unit 505 may be implemented by a processor.

The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, and the computer program causes a computer to execute some or all of the steps described in the intelligent projector in the above method embodiment.

Embodiments of the present application also provide a computer program product, wherein the computer program product comprises a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps described for the smart projector in the above method. The computer program product may be a software installation package.

The steps of a method or algorithm described in the embodiments of the present application may be implemented in hardware, or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may reside as discrete components in an access network device, a target network device, or a core network device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in the embodiments of the present application may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, a hard Disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present application in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims

1. A microphone testing method is applied to an intelligent projector comprising N microphones, and comprises the following steps:

respectively determining first decibel values of the N paths of first audio signals;

carrying out consistency evaluation on the N microphones according to the determined N first scores;

under the condition that the consistency of the N microphones is qualified, evaluating the sealing performance of the N microphones;

and determining that the test of the N microphones is qualified under the condition that the sealing property of the N microphones is qualified.

2. The method of claim 1, the first test audio being generated by an audio output device, the audio output device being currently placed in the silencer, the audio output device outputting the first test audio using a first output policy, the first output policy being to play the first test audio at a first time and to stop playing the first test audio at a second time; through N microphones gather first test audio respectively, obtain N way first audio signal, include:

3. The method of claim 1, wherein each of the N first audio signals is continuous, and wherein the determining the first decibel values for the N first audio signals comprises:

4. The method according to claim 3, wherein said sampling the N first audio signals respectively to obtain N discrete groups of first audio signals comprises:

5. The method according to any one of claims 1-4, wherein said performing a consistency evaluation on said N microphones based on said determined N first scores comprises: and determining that the consistency of the N microphones is qualified under the condition that the N first decibel values are all in the first range.

6. The method according to any one of claims 1 to 5, wherein in case the consistency of the N microphones is qualified, the confidentiality of the N microphones is evaluated, and the method comprises:

7. The method of claim 6, wherein the evaluating the confidentiality of the N microphones according to the determined N second scores comprises:

8. A microphone testing device, which is applied to an intelligent projector comprising N microphones, the device comprises:

9. An intelligent projector, comprising a processor, a memory, a microphone module, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-7.

10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, wherein the computer program is processed to perform the method according to any of claims 1-7.