CN101415141B - System and method for measuring microphone response time - Google Patents
System and method for measuring microphone response time Download PDFInfo
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- CN101415141B CN101415141B CN2008102176281A CN200810217628A CN101415141B CN 101415141 B CN101415141 B CN 101415141B CN 2008102176281 A CN2008102176281 A CN 2008102176281A CN 200810217628 A CN200810217628 A CN 200810217628A CN 101415141 B CN101415141 B CN 101415141B
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- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 18
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Abstract
The invention provides a system for measuring the response time of a microphone. The measurement system comprises a program control terminal module, a data collecting module controlled by the program control terminal module, a switch module, and a testing circuit module used for being connected in the microphone to be measured. Compared with the prior art, in the invention, the software program is used for controlling the switch and reading the data, so that the efficiency of data reading operated by the software program is greatly higher than the efficiency of data reading on an oscillograph operated by man, and the part of time delay which is extra part compared with the time by pressing a switch with hand reduces the influence on the final measurement result. Therefore, the invention has the advantages of high efficiency, simple operation and high precision.
Description
[technical field]
The present invention relates to test macro and the method for measurement thereof of a kind of microphone response time.
[background technology]
Microphone is the transducer that is used for voice signal is transformed into the signal of telecommunication, and its response time influences its performance quality.The response time of microphone is meant that the voltage at microphone two ends rises to the used time in crest voltage stage from 0.Response time is short, and the highly sensitive of microphone is described.
The method of traditional measurement microphone response time is: give microphone power with DC power supply, in circuit, be in series with a switch.During test; Make the switch closure turning circuit earlier; With the magnitude of voltage at microphone two ends in the oscillograph recording circuit turn-on process of having prepared, the voltage that reads the microphone two ends according to the waveform of oscillograph recording then rises to used time in crest voltage stage, i.e. response time from 0.This conventional measurement is fetched data by manual control switch and manual read, and efficient is low, not easy to operate and accuracy is not high.
Thereby, be necessary to study a kind of new microphone response time measurement means.
[summary of the invention]
The technical problem that the present invention need solve provides measuring system and the method for measurement thereof of the microphone response time that a kind of efficient is high, easy and simple to handle, accuracy is high.
According to the above-mentioned technical problem that needs solution; The present invention has designed the measuring system of a kind of microphone response time; This measuring system comprises the program control terminal module, by data acquisition module, the switch module of program control terminal module control, be used to insert the test circuit module of microphone to be measured; This data acquisition module is provided with electrical signal, switch control end, data acquisition end; Said test circuit module links to each other with electrical signal with the data acquisition end of data acquisition module, and said switch module links to each other with the switch control end of data acquisition module and controls the ON/OFF between test circuit module and the electrical signal.
The present invention has also designed the method for measurement of a kind of microphone response time, and this method of measurement comprises:
(1), sets up just like above-mentioned measuring system;
(2), on test circuit module, insert microphone to be measured;
(3), setup parameter value on the program control terminal module;
(4), in program control terminal module output switch closure signals test circuit module and electrical signal are connected;
(5), data collecting module collected signal and export the program control terminal module to, the program control terminal module obtains waveform;
(6), program control terminal module analysis waveform, and display result data.
Compared with prior art, the present invention is by software program control switch and reading of data, than artificial on oscilloscope reading of data efficient improve greatly, and reduced the influence of this part time-delay by switch final measurement than artificial hand.Thereby the present invention has efficient height, easy and simple to handle, advantage of high accuracy.
[description of drawings]
Fig. 1 is the module map of the measuring system of microphone response time of the present invention;
Fig. 2 is the process block diagram of the method for measurement of microphone response time of the present invention;
Fig. 3 is the initial display interface sectional drawing of program control terminal module of the present invention;
Fig. 4 is the display interface sectional drawing that program control terminal module of the present invention records the result.
[embodiment]
Below in conjunction with accompanying drawing and execution mode the present invention is described further.
As shown in Figure 1, the measuring system of microphone response time of the present invention comprises program control terminal module, data acquisition module, switch module, test circuit module.The program control terminal module links to each other with data acquisition module and the control data acquisition module.This data acquisition module is provided with switch control end 1, data acquisition end 3, signal output part 2.Test circuit module links to each other with the data acquisition end with signal output part, links to each other in order to input electrical signal with signal output part, links to each other with the data acquisition end in order to gather the magnitude of voltage of microphone.Switch module links to each other with the switch control end, and the circuit between control test circuit module and the electrical signal is connected ON/OFF.
Use the method for measurement of this measuring system:
(1), sets up this test macro;
(2), on test circuit module, insert microphone to be measured;
(3), setup parameter value on the program control terminal module.As shown in Figure 3, the initial display interface of this program control terminal module before testing, needs to set " by percentage " and " upper limit setup parameter ", wherein " crest voltage " and " response time " result data for recording afterwards." upper limit setting " is response time result's the upper limit, as the result data that records just representes that above this " upper limit setting " parameter product is defective.By percentage is the percentage of voltage peak-peak, such as, being set at 95% by percentage, the response time rises to the needed time of 95% voltage peak-peak from 0 exactly so.
(4), test circuit module is connected, then the microphone two ends have produced voltage in program control terminal module output switch closure signals;
(5), the voltage signal of data collecting module collected microphone and export the program control terminal module to, the program control terminal module obtains waveform, and is as shown in Figure 4;
(6), program control terminal module analysis waveform, and display result data, as shown in Figure 4, the response time that records is 102ms.
After the measurement that finishes a product to be measured, can insert another product again and measure.
Compared with prior art, the present invention is by software program control switch and reading of data, than artificial on oscilloscope reading of data efficient improve greatly, and reduced the influence of this part time-delay by switch final measurement than artificial hand.Thereby the present invention has efficient height, easy and simple to handle, advantage of high accuracy.
Above-described only is execution mode of the present invention, should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the invention design, can also make improvement, but these all belongs to protection scope of the present invention.
Claims (3)
1. the measuring system of a microphone response time; It is characterized in that: this measuring system comprises the program control terminal module, by data acquisition module, the switch module of program control terminal module control, be used to insert the test circuit module of microphone to be measured; This data acquisition module is provided with electrical signal, switch control end, data acquisition end; Said test circuit module links to each other with the data acquisition end of data acquisition module in order to gather the magnitude of voltage of microphone; Link to each other in order to input electrical signal with electrical signal, said switch module links to each other with the switch control end of data acquisition module and controls the ON/OFF between test circuit module and the electrical signal.
2. the method for measurement of a microphone response time, it is characterized in that: this method of measurement comprises:
(1), sets up a measuring system as claimed in claim 1;
(2), on test circuit module, insert microphone to be measured;
(3), setup parameter value on the program control terminal module;
(4), in program control terminal module output switch closure signals test circuit module and electrical signal are connected;
(5), data collecting module collected signal and export the program control terminal module to, the program control terminal module obtains waveform;
(6), program control terminal module analysis waveform, and display result data.
3. the method for measurement of microphone response time according to claim 2 is characterized in that: described parameter value comprises by the percentage and the upper limit to be set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102176281A CN101415141B (en) | 2008-11-21 | 2008-11-21 | System and method for measuring microphone response time |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102176281A CN101415141B (en) | 2008-11-21 | 2008-11-21 | System and method for measuring microphone response time |
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| CN101415141A CN101415141A (en) | 2009-04-22 |
| CN101415141B true CN101415141B (en) | 2012-06-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799317B (en) * | 2009-12-29 | 2011-09-14 | 武汉艾立卡电子有限公司 | Measuring method of technical parameters of delay-type audio devices of electrophone |
| CN101984680B (en) * | 2010-11-10 | 2014-07-09 | 瑞声声学科技(深圳)有限公司 | Test device of pressure microphone and test method thereof |
| CN103019223B (en) * | 2012-11-22 | 2015-07-01 | 北京广利核系统工程有限公司 | Method for automatically processing safety level DCS response time testing data in nuclear power station |
| CN105807602A (en) * | 2016-03-10 | 2016-07-27 | 北京小鸟看看科技有限公司 | Method and system for testing virtual reality equipment delay |
| CN106291349B (en) * | 2016-08-17 | 2018-09-25 | 中国电子科技集团公司第四十一研究所 | The test method of microwave components switch response time based on frequency conversion square-wave signal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0376587A2 (en) * | 1988-12-28 | 1990-07-04 | AT&T Corp. | Acoustic calibration arrangement for a voice switched speakerphone |
| CN1152851A (en) * | 1995-10-24 | 1997-06-25 | 孙庚辰 | Measuring method and system for parameters of electro-acoustic transducing device |
| CN1856188A (en) * | 2005-04-26 | 2006-11-01 | 索尼株式会社 | Acoustic device, delay calculating method and recording media |
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- 2008-11-21 CN CN2008102176281A patent/CN101415141B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0376587A2 (en) * | 1988-12-28 | 1990-07-04 | AT&T Corp. | Acoustic calibration arrangement for a voice switched speakerphone |
| CN1152851A (en) * | 1995-10-24 | 1997-06-25 | 孙庚辰 | Measuring method and system for parameters of electro-acoustic transducing device |
| CN1856188A (en) * | 2005-04-26 | 2006-11-01 | 索尼株式会社 | Acoustic device, delay calculating method and recording media |
Non-Patent Citations (2)
| Title |
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| JP昭56－4018A 1981.01.16 |
| JP特开平5－199593A 1993.08.06 |
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Effective date of registration: 20231124 Address after: 213000 No.3, Changcao Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: AAC Acoustic Technologies (Changzhou) Co.,Ltd. Patentee after: Jiangsu Jicui Zhongyi Technology Industry Development Co.,Ltd. Address before: 213167 Changzhou, Jiangsu City, Wujin province summer town villa Patentee before: AAC Acoustic Technologies (Changzhou) Co.,Ltd. |