CN108307284A - A kind of method, device and mobile terminal of automatic detection loud speaker - Google Patents
A kind of method, device and mobile terminal of automatic detection loud speaker Download PDFInfo
- Publication number
- CN108307284A CN108307284A CN201711476767.1A CN201711476767A CN108307284A CN 108307284 A CN108307284 A CN 108307284A CN 201711476767 A CN201711476767 A CN 201711476767A CN 108307284 A CN108307284 A CN 108307284A
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- Prior art keywords
- impedance curve
- loud speaker
- impedance
- testing audio
- curve
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
Abstract
The present invention provides a kind of methods of automatic detection loud speaker, and testing audio is played by loud speaker, detect the impedance of testing audio, and analysis obtains impedance curve, if the impedance curve of testing audio does not meet normal impedance curve, prompt the detection of user's loud speaker abnormal.The method of the automatic detection loud speaker of the present invention can be executed directly by mobile terminal execution or under the operation of user, without arriving repair location detection, and it when the impedance curve of testing audio does not meet normal impedance curve, is prompted, to inform the state of user's current speaker.
Description
Technical field
The present invention relates to Audiotechnica field, the method, apparatus more particularly to a kind of automatic detection loud speaker and movement
Terminal.
Background technology
Mobile terminal is only detected the working condition of loud speaker in manufacture, sound during subsequent user use
There are abnormal conditions, such as distorsion, noise, sound are small, noiseless, user can not judge whether that loud speaker is led to the problem of, such as produce
Raw noise is likely to be source of sound defect itself, or there are magnetic interferences or CPU processing speeds to wait other reasons slowly, needs to take
Repair location is detected.
In addition, as long-time service leads to blocked, device aging of loud speaker sound outlet hole etc., the sound quality of loud speaker slowly becomes
Difference, user are limited by professional knowledge, can not judge whether the sound quality of loud speaker generates exception.
Invention content
The present invention provides a kind of methods of automatic detection loud speaker, can voluntarily be examined to the working condition of loud speaker
It surveys, and user is made to understand whether loud speaker generates exception.
To solve the above-mentioned problems, the invention discloses a kind of method of automatic detection loud speaker, the method includes：By
The loud speaker plays testing audio；Detect impedance when loud speaker plays testing audio；The impedance is analyzed, the survey is obtained
The impedance curve of audition frequency；If the impedance curve of the testing audio does not meet normal impedance curve, user's loud speaker is prompted
Detection is abnormal.
Further, include if the impedance curve of the testing audio does not meet normal impedance curve：The test
The impedance curve of audio and normal impedance curve the impedance of respective frequencies point absolute difference not in setting range.
Further, it includes text prompt or auditory tone cues that prompt user's loud speaker detection is abnormal.
Further, the testing audio is the frequency sweep source of sound of 200hz-20khz.
Further, if the impedance curve of the testing audio does not meet normal impedance curve, user is prompted to raise
After sound device detects exception, further include：If the impedance curve of the testing audio meets anomalous impedance curve, user is prompted to raise
There is abnormality corresponding with the anomalous impedance curve in sound device.
Further, after there is abnormality corresponding with the anomalous impedance curve in prompt user's loud speaker,
Further include：If prestoring solution corresponding with abnormality, solution instruction accordingly is executed or will be described
Solution is prompted to user.
Second aspect, the present invention also provides a kind of devices of automatic detection loud speaker, including：Loud speaker is surveyed for playing
Audition frequency；Detection unit, for detecting impedance when loud speaker plays testing audio；Processing unit, for receiving and analyzing institute
Impedance is stated, the impedance curve of the testing audio is obtained；Judging unit, for judge the testing audio impedance curve whether
Comply with standard impedance curve；Prompt unit, for when the impedance curve of the testing audio does not meet normal impedance curve, carrying
Show that the detection of user's loud speaker is abnormal.
Further, the judging unit further includes abnormality determination unit, and the impedance for judging the testing audio is bent
Whether line meets anomalous impedance curve；The prompt unit is additionally operable to meet abnormal resistance in the impedance curve of the testing audio
When anti-curve, user's loud speaker is prompted abnormality corresponding with the anomalous impedance curve occur.
Further, which further includes：Execution unit prestores solution corresponding with abnormality for working as
When, it executes the solution and instructs accordingly.
The third aspect, the present invention provide a kind of mobile terminal, including the automatic dress for detecting loud speaker described in second aspect
It sets.
Compared with prior art, the present invention includes following advantages：
The present invention plays testing audio by loud speaker, detects the impedance of testing audio, and analysis obtains impedance curve, if test
The impedance curve of audio does not meet normal impedance curve, then prompts the detection of user's loud speaker abnormal.The automatic detection of the present invention is raised
The method of sound device can be executed directly by mobile terminal execution or under the operation of user, without being detected to repair location, and
It when the impedance curve of testing audio does not meet normal impedance curve, is prompted, to inform the state of user's current speaker.
Description of the drawings
Fig. 1 is the flow chart of the method for the automatic detection loud speaker of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the device for detecting loudspeaker impedance of one embodiment of the invention；
Fig. 3 is the method flow diagram of the automatic detection loud speaker of another embodiment of the present invention；
Fig. 4 is the schematic diagram for the impedance curve that the processing unit of one embodiment of the invention is analyzed；
Fig. 5 is the structural schematic diagram of the device of the automatic detection loud speaker of one embodiment of the invention.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Referring to Fig. 1, it is the flow chart of the method for the automatic detection loud speaker of one embodiment of the invention, includes the following steps.
S11：Testing audio is played by loud speaker.
The method that the present invention detects loud speaker automatically, applied to the terminal for including loud speaker, by taking mobile phone as an example, loud speaker packet
Include earpiece speaker and outgoing loudspeaker.When needing to be detected earpiece speaker, is then played and tested by earpiece speaker
Audio；When needing to be detected outgoing loudspeaker, then testing audio is played by outgoing loudspeaker.
Testing audio is a pre-stored section audio before terminal manufacture, optionally, emulation work is utilized before step S11
Tool emulates the loud speaker of normal operating conditions, and audio used by emulating is the testing audio, to be tested
The normal impedance curve of audio.
Optionally, testing audio is the frequency sweep source of sound of 200hz-20khz.
Impedance when S12, detection loud speaker broadcasting testing audio.
Referring to Fig. 2, for the structural schematic diagram of the device of detection loudspeaker impedance, resistance 21 is connected with loud speaker 22, is measured
The impedance at 21 both ends of resistance can reflect the impedance of loud speaker, and in general manner, the positive and negative anodes of mobile microphone 23 are solved with volume respectively
The pin 241,242 of code device 24 connects, and constitutes microphone access, and the present embodiment can be set between pin 241 and microphone anode
Single-pole double-throw switch (SPDT) S1/S2 is set, single-pole double-throw switch (SPDT) S3/S4 is set between pin 242 and microphone cathode, when microphone is normal
When work, S2, S4 are closed, and S1, S3 are disconnected.When detecting loudspeaker impedance, S1, S3 are closed, and S2, S4 are disconnected so that encoding and decoding
The pin 241,242 of device 24 is connected respectively to the both ends of resistance 21, and then can measure the impedance of resistance 21.It should be noted that
The present embodiment detection loudspeaker impedance has used existing microphone access, but in addition special use can be arranged in those skilled in the art
In the access for measuring loudspeaker impedance.
S13, the analysis impedance, obtain the impedance curve of the testing audio.
If the impedance curve of S14, the testing audio do not meet normal impedance curve, prompt the detection of user's loud speaker different
Often.
Measured standard hinders when analysis testing audio obtains through the processing unit impedance curve and normal operating conditions
Anti- curve is compared, to judge whether loud speaker is abnormal.
Specific judgment method includes judging the impedance curve of testing audio with normal impedance curve in respective frequencies point
Whether the absolute difference of impedance is in setting range.For example, for resonant frequency point, can be obtained from the impedance curve of testing audio
Knowing that resonant frequency is f0, the resonant frequency of normal impedance curve is f0', if meeting | f0-f0'|≤a, the wherein numerical value of a can roots
According to actual conditions sets itself, then the judgement of the corresponding impedance of resonant frequency point is carried out, if humorous in the impedance curve of testing audio
The corresponding impedance of vibration frequency point, i.e. maximum impedance are M0 Ω, and maximum impedance is M0' Ω in normal impedance curve, works as satisfaction | M0-
When M0'|≤b, wherein the numerical value of b can be according to actual conditions sets itself, then it is assumed that the impedance curve of testing audio is hindered with standard
Anti- curve is in setting range in the absolute difference of the corresponding impedance of resonant frequency point.It then proceedes to judge other Frequency points
Corresponding impedance.If | f0-f0'|>A, then it is assumed that the impedance curve of testing audio does not meet normal impedance curve, without being hindered
Anti- multilevel iudge.Certainly, judge whether the impedance curve of testing audio complies with standard impedance curve and can also use its other party
Formula, such as the impedance curve of testing audio are corresponding in the Frequency point less than normal impedance curve in the corresponding impedance of certain Frequency point
The certain percentage of impedance does not meet normal impedance curve then.
Include text prompt or auditory tone cues when prompting user.
The method of the automatic detection loud speaker of the present invention can directly be held by mobile terminal execution or under the operation of user
Row without being detected to repair location, and when the impedance curve of testing audio does not meet normal impedance curve, is prompted,
To inform the state of user's current speaker.
Embodiment one：
Fig. 3 is a kind of method flow diagram of automatic detection loud speaker of the present embodiment, is included the following steps.
S31, the loud speaker of normal operating conditions is detected using emulation tool, obtains the impedance curve of standard.
Specifically, one section of testing audio is played by loud speaker, analyzes to obtain the impedance curve of loud speaker by emulator.
There is typical abnormal state in S32, analog speakers, and carry out emulation to it and obtain anomalous impedance curve.
Specifically, the typical abnormality of loud speaker includes sound outlet hole blocking, rear sound chamber poor sealing, vibrations diaphragm damage
Bad, impurity enters loud speaker etc..To abnormality simulation as close possible to the true service condition of user, for example, sound outlet hole is stifled
Plug usually dust, greasy dirt accumulation cause, by two kinds of substance uniform folds at sound outlet hole, to truly reflect making for user
Use situation.
So that the loud speaker in each abnormality is played testing audio respectively, analyzes to obtain loud speaker by emulator
Anomalous impedance curve, each abnormality has corresponding anomalous impedance curve, is specifically shown in the following table 1.
| Abnormality | Anomalous audio parameter |
| Sound outlet hole blocks | Impedance curve L1 |
| Sound chamber poor sealing afterwards | Impedance curve L2 |
| Shake diaphragm failures | Impedance curve L3 |
| …… | …… |
Table 1
Further, solution corresponding with abnormality is formulated, and is stored, can be corresponding to solution
Instruction or using solution as prompt.For example, abnormality blocks for sound outlet hole, solution is then cleaning sound outlet hole,
The word storage that specifically " can will clear up sound outlet hole " is in memory.When terminal is provided with the ultrasonic wave near sound outlet hole
When generator, instruction corresponding with solution is then to open supersonic generator, passes through sonic cleaning sound outlet hole.
It should be noted that step S31, S32 needs are executed before manufacture, and without temporal sequencing.
S33, after the instruction of the automatic detection loud speaker of triggering, testing audio is played by loud speaker.
The instruction of automatic detection loud speaker can be terminal compartment certain time set by user or preset time point from
It is dynamic to execute detection operation, or can also be to indicate to execute detection operation according to user.
Impedance when S34, detection loud speaker broadcasting testing audio.
Particular content can refer to step S12.
S35, the analysis impedance, obtain the impedance curve of the testing audio.
Particular content can refer to step S13.
If the impedance curve of S36, testing audio does not meet normal impedance curve, prompt the detection of user's loud speaker abnormal.
Further, it is able to know that the specific abnormal conditions of loud speaker, the present embodiment also execute following for the ease of user
Step.
If the impedance curve of S37, the testing audio meet anomalous impedance curve, the appearance of user's loud speaker and institute are prompted
State the corresponding abnormality of anomalous impedance curve.
Specifically, in the present embodiment, the impedance curve of the testing audio measured is impedance curve Lx, shown in Figure 4.It will
Impedance curve Lx is compared with each impedance curve in table 1, if meeting some impedance curve, that is to say, that with some impedance
Curve is similar, then the corresponding abnormality of the impedance curve is current speaker state in which.
Usually, impedance curve Lx may not with some impedance curve striking resemblances, but as long as it is similar or regulation model
In enclosing, for example, the impedance curve Lx of Fig. 4, at resonant frequency point f0, corresponding maximum impedance value is M0 Ω, impedance curve
The resonant frequency of L2 is f0', and corresponding maximum impedance value is M0' Ω, if meeting | f0-f0'|≤a, and | M0-M0'|≤b, a, b
It is set all in accordance with actual conditions, then impedance curve Lx is similar to the resonant frequency of impedance curve L2 and maximum impedance value.So
Continue to compare the impedance value at other frequencies afterwards, for impedance curve Lx at Frequency point f1, corresponding impedance value is M1 Ω, and impedance is bent
For line L2 at the Frequency point that frequency values are f1, corresponding impedance value is M1' Ω, if meeting | M1-M1'|≤c, wherein c is according to reality
Border situation is set, then impedance curve Lx is similar to impedances of the impedance curve L2 at Frequency point f1.Preferably, it can be spaced
One band frequency is selected several Frequency points and is compared, if impedance of two impedance curves at all Frequency points is all similar, recognizes
Meet impedance curve L2 for impedance curve Lx.
If S38, prestoring solution corresponding with abnormality, executes solution instruction accordingly or incite somebody to action
The solution is prompted to user.
As described in step S22, terminal prestores solution, and loudspeaker can be solved by executing command adapted thereto or prompt user
Often, without taking repair location, facilitate user's voluntarily maintaining.
The present embodiment further knows which kind of unusual condition loud speaker is in after unusual condition occurs in detection loud speaker,
And solution is provided, improve user experience.
Embodiment two：
Referring to Fig. 5, the present embodiment provides a kind of devices 5 of automatic detection loud speaker, including loud speaker 51, are surveyed for playing
Audition frequency；Detection unit 52, for detecting impedance when loud speaker plays testing audio；Processing unit 53, for being used to receive
And the impedance is analyzed, obtain the impedance curve of the testing audio；Judging unit 54, the resistance for judging the testing audio
Whether anti-curve complies with standard impedance curve；Prompt unit 55, for not being inconsistent standardization in the impedance curve of the testing audio
When impedance curve, prompt the detection of user's loud speaker abnormal.
Further, judging unit 54 further includes abnormality determination unit, the impedance curve for judging the testing audio
Whether anomalous impedance curve is met；The prompt unit is additionally operable to meet anomalous impedance in the impedance curve of the testing audio
When curve, user's loud speaker is prompted abnormality corresponding with the anomalous impedance curve occur.
Further, the device of detection loud speaker further includes execution unit 56 automatically, for when prestoring and abnormality
When corresponding solution, executes the solution and instruct accordingly.Or the solution is carried by prompt unit 55
Show to user.
The present invention also provides a kind of mobile terminals, include the device of the automatic detection loud speaker described in above-described embodiment.
The present invention is described in detail above, specific case used herein is to the principle of the present invention and embodiment party
Formula is expounded, and the explanation of above example is only intended to facilitate the understanding of the method and its core concept of the invention；Meanwhile it is right
In those of ordinary skill in the art, according to the thought of the present invention, change is had in specific embodiments and applications
Place, in conclusion the content of the present specification should not be construed as limiting the invention.
Claims (10)
1. a kind of method of automatic detection loud speaker, which is characterized in that the method includes：It is played and is tested by the loud speaker
Audio；Detect impedance when loud speaker plays testing audio；The impedance is analyzed, the impedance curve of the testing audio is obtained；
If the impedance curve of the testing audio does not meet normal impedance curve, prompt the detection of user's loud speaker abnormal.
2. if according to the method described in claim 1, it is characterized in that, the impedance curve of the testing audio does not meet mark
Quasi- impedance curve includes：The impedance curve of the testing audio is exhausted in the difference of the impedance of respective frequencies point with normal impedance curve
To being worth not in setting range.
3. according to the method described in claim 1, it is characterized in that：Prompt user's loud speaker detection is abnormal to be carried including word
Show or auditory tone cues.
4. according to the method described in claim 1, it is characterized in that：The testing audio is the frequency sweep source of sound of 200hz-20khz.
5. if according to the method described in claim 1, it is characterized in that, the impedance curve of the testing audio does not meet mark
Quasi- impedance curve, then prompt further include after the detection of user's loud speaker is abnormal：If the impedance curve of the testing audio meets different
Normal impedance curve then prompts user's loud speaker abnormality corresponding with the anomalous impedance curve occur.
6. according to the method described in claim 5, it is characterized in that, prompt user's loud speaker occurs and the anomalous impedance
After the corresponding abnormality of curve, further include：If prestoring solution corresponding with abnormality, the solution is executed
Certainly measure instructs or the solution is prompted to user accordingly.
7. a kind of device of automatic detection loud speaker, which is characterized in that including：Loud speaker, for playing testing audio；Detection
Unit, for detecting impedance when loud speaker plays testing audio；Processing unit is obtained for receiving and analyzing the impedance
The impedance curve of the testing audio；Judging unit, for judging whether the impedance curve of the testing audio complies with standard resistance
Anti- curve；Prompt unit, for when the impedance curve of the testing audio does not meet normal impedance curve, user being prompted to raise
The detection of sound device is abnormal.
8. device according to claim 7, which is characterized in that the judging unit further includes abnormality determination unit, is used for
Judge whether the impedance curve of the testing audio meets anomalous impedance curve；The prompt unit is additionally operable in the test
When the impedance curve of audio meets anomalous impedance curve, user's loud speaker is prompted to occur corresponding different with the anomalous impedance curve
Normal state.
9. device according to claim 8, which is characterized in that further include：Execution unit prestores and exception for working as
When the corresponding solution of state, executes the solution and instruct accordingly.
10. a kind of mobile terminal, which is characterized in that detect the dress of loud speaker automatically including claim 7-9 any one of them
It sets.
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| CN201711476767.1A CN108307284A (en) | 2017-12-29 | 2017-12-29 | A kind of method, device and mobile terminal of automatic detection loud speaker |
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| CN201711476767.1A CN108307284A (en) | 2017-12-29 | 2017-12-29 | A kind of method, device and mobile terminal of automatic detection loud speaker |
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| CN109089190A (en) * | 2018-10-26 | 2018-12-25 | Oppo广东移动通信有限公司 | Impedance curve determines method, apparatus, storage medium and terminal device |
| CN109391875A (en) * | 2018-10-23 | 2019-02-26 | 珠海格力智能装备有限公司 | The adjustment method and device of audio, storage medium, processor |
| CN110830861A (en) * | 2019-10-23 | 2020-02-21 | 维沃移动通信有限公司 | Telephone receiver control method and device and electronic equipment |
| CN110868683A (en) * | 2019-11-05 | 2020-03-06 | 维沃移动通信有限公司 | Ultrasonic module failure detection method and electronic equipment |
| CN111654799A (en) * | 2019-12-31 | 2020-09-11 | 广州励丰文化科技股份有限公司 | Loudspeaker unit identification method and device |
| CN112887893A (en) * | 2021-02-03 | 2021-06-01 | 北京小米移动软件有限公司 | Loudspeaker using method, device and medium |
| CN113272680A (en) * | 2018-11-19 | 2021-08-17 | 法雷奥开关和传感器有限责任公司 | Method for determining state of ultrasonic sensor diaphragm and analysis system |
| CN113395648A (en) * | 2020-03-11 | 2021-09-14 | 北京小米移动软件有限公司 | Sound outlet hole abnormal state detection method and device |
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Application publication date: 20180720 |