CN206226723U - A kind of loudspeaker detection means - Google Patents
A kind of loudspeaker detection means Download PDFInfo
- Publication number
- CN206226723U CN206226723U CN201621247794.2U CN201621247794U CN206226723U CN 206226723 U CN206226723 U CN 206226723U CN 201621247794 U CN201621247794 U CN 201621247794U CN 206226723 U CN206226723 U CN 206226723U
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- CN
- China
- Prior art keywords
- loudspeaker
- detection means
- power amplifier
- microphone
- detection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A kind of loudspeaker detection means, including loudspeaker, the loudspeaker is arranged in sound proof box, speaker bottom is connected with IEC test baffles, microphone is provided with directly over loudspeaker, the microphone is connected with microphone power pack and power amplifier by sound cable, and the PA signal output end is connected with analyzer, and analyzer is connected with test computer by data wire；The signal input part of the loudspeaker connects the power amplifier.The abnormal sound situation of the device energy effective detection loudspeaker, and the impedance curve of loudspeaker can be obtained, the detection efficiency of device is high, high precision, and detection and the analysis support foundation of abnormal sound can be provided for the design of the high-fidelity of loudspeaker.
Description
Technical field
The utility model is related to loudspeaker technical field of processing equipment, and in particular to a kind of loudspeaker detection means.
Background technology
Loudspeaker is a kind of electro-acoustic element, is widely used, and is played an important role in daily life.At present,
Representative index is in domestic loudspeaker detection：Total quality factor, the equivalent area of loudspeaker unit, frequency characteristic,
Acoustic pressure, input electric power, frequency response and pure tone under polarity index, free-field condition etc..Conventional loudspeaker noise failure
Detection method is pure tone detection, refers to applying loudspeaker the logarithmic sine swept-frequency signal of 20-1500-20Hz, using people's
Whether the sense of hearing tests and analyzes its response signal normal.It is many that the sense of hearing judges that loudspeaker quality be present, such as testing result is because of people
Age increase, emotional change and different because long-time monitors the auditory fatigue etc. for producing.Additionally, the acoustic energy that loudspeaker sends
It is to be radiate from the front and back of cone, the front and back of cone has air, when cone travels forward, cone
The air in front is squeezed and becomes dense, and the air at cone rear becomes sparse, then conversely, cone when cone is moved backward
The acoustic energy that front is radiate is inverted relationship with the acoustic energy that the back side is radiate, it may occur that phenomenon of cancelling out each other so that
The corresponding of loudspeaker declines in rain, and influence loudspeaker detects the detection accuracy of abnormal sound failure.
Therefore, it is necessary to propose a kind of stable loudspeaker detection means on abnormal sound context of detection.
Utility model content
The purpose of this utility model is to provide a kind of loudspeaker detection means, the abnormal sound of the device energy effective detection loudspeaker
Situation, and the impedance curve of loudspeaker can be obtained, the detection efficiency of device is high, high precision, can be that the high-fidelity of loudspeaker is designed
Detection and the analysis support foundation of abnormal sound are provided.
A kind of loudspeaker detection means, including loudspeaker, the loudspeaker are arranged in sound proof box, speaker bottom connection
There is IEC to test baffle, microphone is provided with directly over loudspeaker, the microphone is connected with Mike's wind power supply by sound cable
Box and power amplifier, the signal output part of the power amplifier are connected with analyzer, and analyzer is connected with by data wire
Test computer；The signal input part of the loudspeaker connects the power amplifier.
More preferably, it is parallel with universal meter on the loudspeaker.
More preferably, the test computer is connected with display lamp.
More preferably, impedance box is connected between the power amplifier and the loudspeaker.
More preferably, the IEC tests baffle is by the composite adhered baffle of the fiberboard of two-layer 15mm or 20mm.
More preferably, the loudspeaker is arranged at one jiao of IEC test baffles.
It follows that the utility model loudspeaker is arranged at IEC one jiao of baffles of test, reduce because of the acoustic energy that interference causes
The degree of decay so that loudspeaker working stability in sound proof box, obtains effective measurement data.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is connection diagram of the present utility model.
Specific embodiment
In order to solve the problems, such as that loudspeaker is detected because of the sound energy attenuation influence abnormal sound that interference causes, the utility model proposes one
Loudspeaker detection means, the abnormal sound situation of the device energy effective detection loudspeaker are planted, and the impedance curve of loudspeaker can be obtained, filled
The detection efficiency put is high, high precision, and detection and the analysis support foundation of abnormal sound can be provided for the design of the high-fidelity of loudspeaker.
As shown in figure 1, a kind of loudspeaker detection means, including loudspeaker 1, the loudspeaker 1 is arranged in sound proof box 2,
The bottom of loudspeaker 1 is connected with IEC test baffles 9, and the loudspeaker 1 is arranged at IEC 9 one jiaos of baffles of test, reduces because of interference
The degree of the sound energy attenuation for causing；The surface of the loudspeaker 1 is provided with microphone 3, and the microphone 3 is connected by sound cable
Microphone power pack 4 and power amplifier 7 are connected to, the signal output part of the power amplifier 7 is connected with analyzer 6, analyzed
Instrument 6 is connected with test computer 5 by data wire, and test computer 5 is connected with display lamp 12, and the keying by display lamp 12 is anti-in time
Whether the accuracy in pitch for reflecting loudspeaker is abnormal；The signal input part of the loudspeaker 1 connects the power amplifier 7, and the power is put
Big being connected between device 7 and the loudspeaker 1 is parallel with universal meter 11 on impedance box 10, and the loudspeaker 1, according to universal meter
11 readings and detection computer 5 analyze the impedance curve for obtaining loudspeaker 1.More preferably, the IEC tests baffle 9 is by two-layer
The composite adhered baffle of the fiberboard of 15mm or 20mm so that loudspeaker working stability in sound proof box, is effectively measured
Data.
During detection, the output signal of analyzer 6, power amplifier 7 transmits a signal to signal amplification by impedance box 10
Loudspeaker 1, loudspeaker 1 sends the sound, and acoustic energy signal is transmitted back to analyzer 6, analyzer 6 by microphone 3 by power amplifier 7
Analysis acoustic energy signal, and information transfer to test computer 5 will be analyzed and processed, test computer 5 judgement sound is accurate, and detection data is below standard
Sent warning signal by display lamp 12.
By above description, detection performance of the present utility model is high, and loudspeaker is arranged on IEC one jiao of baffles of test
Place, reduces because of the degree of the sound energy attenuation that interference causes so that loudspeaker working stability in sound proof box, is effectively measured
Data；Loudspeaker is connected with universal meter and impedance box, and the method that can be measured by constant pressure obtains the impedance curve of loudspeaker, so that
Judge loudspeaker defect that may be present.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all regarded
To belong to protection domain of the present utility model.
Claims (6)
1. a kind of loudspeaker detection means, it is characterised in that including loudspeaker, the loudspeaker is arranged in sound proof box, is raised one's voice
Device bottom is connected with IEC test baffles, and microphone is provided with directly over loudspeaker, and the microphone is connected with by sound cable
Microphone power pack and power amplifier, the signal output part of the power amplifier are connected with analyzer, and analyzer is by number
Test computer is connected with according to line；The signal input part of the loudspeaker connects the power amplifier.
2. a kind of loudspeaker detection means according to claim 1, it is characterised in that be parallel with general-purpose on the loudspeaker
Table.
3. a kind of loudspeaker detection means according to claim 1, it is characterised in that the test computer is connected with display
Lamp.
4. a kind of loudspeaker detection means according to claim 1, it is characterised in that the power amplifier is raised one's voice with described
Impedance box is connected between device.
5. a kind of loudspeaker detection means according to claim 1, it is characterised in that the IEC tests baffle is by two-layer
The composite adhered baffle of the fiberboard of 15mm or 20mm.
6. a kind of loudspeaker detection means according to claim 1, it is characterised in that the loudspeaker is arranged on IEC tests
At a jiao of baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621247794.2U CN206226723U (en) | 2016-11-22 | 2016-11-22 | A kind of loudspeaker detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621247794.2U CN206226723U (en) | 2016-11-22 | 2016-11-22 | A kind of loudspeaker detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226723U true CN206226723U (en) | 2017-06-06 |
Family
ID=58791642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621247794.2U Expired - Fee Related CN206226723U (en) | 2016-11-22 | 2016-11-22 | A kind of loudspeaker detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226723U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752076A (en) * | 2019-01-17 | 2019-05-14 | 中航环试测试技术(深圳)有限公司 | A kind of vibration abnormal sound test macro |
| CN111551320A (en) * | 2020-03-19 | 2020-08-18 | 惠州市德赛西威汽车电子股份有限公司 | Airtightness testing system and device based on product with loudspeaker |
| CN111947771A (en) * | 2020-09-25 | 2020-11-17 | 杭州爱宏仪器有限公司 | Testing device suitable for sound transmission frequency response curves of various stethoscopes |
-
2016
- 2016-11-22 CN CN201621247794.2U patent/CN206226723U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752076A (en) * | 2019-01-17 | 2019-05-14 | 中航环试测试技术(深圳)有限公司 | A kind of vibration abnormal sound test macro |
| CN111551320A (en) * | 2020-03-19 | 2020-08-18 | 惠州市德赛西威汽车电子股份有限公司 | Airtightness testing system and device based on product with loudspeaker |
| CN111947771A (en) * | 2020-09-25 | 2020-11-17 | 杭州爱宏仪器有限公司 | Testing device suitable for sound transmission frequency response curves of various stethoscopes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20201122 |