CN205584305U - A audio frequency quality testing arrangement for smart mobile phone - Google Patents
A audio frequency quality testing arrangement for smart mobile phone Download PDFInfo
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- CN205584305U CN205584305U CN201620207261.5U CN201620207261U CN205584305U CN 205584305 U CN205584305 U CN 205584305U CN 201620207261 U CN201620207261 U CN 201620207261U CN 205584305 U CN205584305 U CN 205584305U
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Abstract
The utility model discloses an audio frequency quality testing arrangement for smart mobile phone, including surface acoustic wave filter, the sound sensor passes through surface acoustic wave filter to be installed on the shell of smart mobile phone, and the smart mobile phone sends audio frequency carrier signal and is caught by the sound sensor to convert the non - electric quantity signal of audio frequency during voltage signal sends the linear amplifier circuit of one -level to into through the sound sensor, the linear amplifier circuit of one -level is with the signal amplification to carry out the frequency -selecting through filter circuit, filter circuit is connected with the secondary amplification circuit, the secondary amplification circuit is connected with optoelectronic coupler through shaping circuit, optoelectronic coupler is divided into two the tunnel with the signal, sends into measurement and signal processing that the computer carries out resonance frequency all the way, and another sweetgum fruit is crossed logical gate trigger circuit and is sent into upper limit comparator and lower limit comparator, upper limit comparator and lower limit comparator loop through sampling circuit, detection circuit links to each other with the secondary amplification circuit, and this testing arrangement is with low costs, and the measuring accuracy is high.
Description
Technical field
This utility model relates to smartphone audio frequency technical field of measurement and test, is specifically related to a kind of audio quality for smart mobile phone and tests device.
Background technology
In all technical of mobile phone detection, the audio performance of mobile phone is an important technical specification, and it reflects the quality of mobile phone speech signal quality.Handset audio detection equipment on market is mostly from external import, and cost is sufficiently expensive, and domestic only 2～3 mobile phone manufacturer are furnished with this kind of Mobile phone electroacoustic test instrument.Therefore, set up mobile phone test system to be necessary.
For the audio performance of mobile terminal, ITU (International Telecommunication Union) has corresponding international standard, such as ITU-TP.340 " transmission characteristic of hands free terminal and voice quality parameters ", ITU-TP.501 " phone is measured with test signal " etc..China's also performance to telephone set has formulated corresponding standard, such as GB/T7614 " calibration audiometric earphone broadband type artificial ear ", GB/T15279 " automatic telephone technical conditions " etc..Due to the domestic detection for Mobile phone electroacoustic test system or blank, government administration department cannot carry out metrological supervision to Mobile phone electroacoustic test system, cause mobile phone electroacoustic performance uneven, and, the audio quality of mobile phone is closely bound up with the health of human ear, the handset audio detection equipment of domestic market is mostly from external import, cost is sufficiently expensive, after Mobile Phone Consumption person has had problem to complain, relevant technical body does not has corresponding technological means to detect yet, therefore, the research to Mobile phone electroacoustic test system detecting method, is the most necessary.
Utility model content
nullFor problem above，This utility model provides a kind of audio quality for smart mobile phone and tests device，For handset audio test problem present on market，Design a kind of acoustic signals sent by smart mobile phone，Audio frequency non-electric charge quantity signalling is converted to voltage signal，It is then sent through in one-level linear amplifier circuit，Frequency-selecting is carried out by filter circuit，Two paths of signals transmission it is divided into again: a road is to be amplified to designated magnitude after filtering after signal damping amplifies and promotes，Audio frequency non-electric charge quantity signalling is converted to voltage signal，It is then sent through in one-level linear amplifier circuit，Frequency-selecting is carried out by filter circuit，Two paths of signals transmission it is divided into again: be amplified to designated magnitude through second amplifying circuit again after signal damping amplifies and promotes，Then send into microsystem by photoelectrical coupler to process，Make detect the dynamic range of signal and can disposal ability strengthen，This test installation cost is low，Measuring accuracy is high，Can effectively solve the problem in background technology.
nullTo achieve these goals，The technical solution adopted in the utility model is as follows: a kind of audio quality for smart mobile phone tests device，Including surface acoustic wave filter and sound transducer，Described sound transducer is installed on the shell of smart mobile phone by surface acoustic wave filter，Smart mobile phone sends audio carrier signal and is captured by sound transducer，And by sound transducer, audio frequency non-electric charge quantity signalling is converted to voltage signal and delivers in one-level linear amplifier circuit，Signal is amplified by described one-level linear amplifier circuit，And carry out frequency-selecting by filter circuit，Described filter circuit connects second amplifying circuit，Described second amplifying circuit is connected by shaping circuit photoelectrical coupler，Signal is divided into two-way by described photoelectrical coupler，One tunnel is sent into microcomputer and is carried out measurement and the signal processing of resonant frequency，Logical gate of separately leading up to triggers circuit and sends into upper limit comparator and lower limit comparator，Described upper limit comparator and lower limit comparator pass sequentially through sample circuit、Detecting circuit is connected with second amplifying circuit.
As a kind of optimal technical scheme of the present utility model, described microcomputer connects printer.
As a kind of optimal technical scheme of the present utility model, described microcomputer connects display.
As a kind of optimal technical scheme of the present utility model, described microcomputer connects usb interface module.
The beneficial effects of the utility model:
This utility model is for handset audio test problem present on market, design a kind of acoustic signals sent by smart mobile phone, audio frequency non-electric charge quantity signalling is converted to voltage signal, it is then sent through in one-level linear amplifier circuit, frequency-selecting is carried out by filter circuit, two paths of signals transmission it is divided into again: a road is to be amplified to designated magnitude after filtering after signal damping amplifies and promotes, audio frequency non-electric charge quantity signalling is converted to voltage signal, it is then sent through in one-level linear amplifier circuit, frequency-selecting is carried out by filter circuit, two paths of signals transmission it is divided into again: be amplified to designated magnitude through second amplifying circuit again after signal damping amplifies and promotes, then send into microsystem by photoelectrical coupler to process, make detect the dynamic range of signal and can disposal ability strengthen, this test installation cost is low, measuring accuracy is high.
Accompanying drawing explanation
Fig. 1 is this utility model overall structure schematic diagram.
Figure is numbered: 1-surface acoustic wave filter；2-sound transducer；3-one-level linear amplifier circuit；4-filter circuit；5-second amplifying circuit；6-shaping circuit；7-photoelectrical coupler；8-Logical gate triggers circuit；9-upper limit comparator；10-lower limit comparator；11-sample circuit；12-detecting circuit；13-microcomputer；14-printer；15-display；16-USB interface module.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Embodiment:
nullAs shown in Figure 1，A kind of audio quality for smart mobile phone tests device，Including surface acoustic wave filter 1，Described sound transducer 2 is installed on the shell of smart mobile phone by surface acoustic wave filter 1，Smart mobile phone sends audio carrier signal and is captured by sound transducer 2，And be converted to voltage signal by 2 audio frequency non-electric charge quantity signallings of sound transducer and deliver in one-level linear amplifier circuit 3，Signal is amplified by described one-level linear amplifier circuit 3，And carry out frequency-selecting by filter circuit 4，Described filter circuit 4 connects second amplifying circuit 5，Described second amplifying circuit 5 is connected by shaping circuit 6 photoelectrical coupler 7，Signal is divided into two-way by described photoelectrical coupler 7，One tunnel is sent into microcomputer 13 and is carried out measurement and the signal processing of resonant frequency，Logical gate of separately leading up to triggers circuit 8 and sends into upper limit comparator 9 and lower limit comparator 10，Described upper limit comparator 9 and lower limit comparator 10 pass sequentially through sample circuit 11、Detecting circuit 12 is connected with second amplifying circuit 5.
On above-described embodiment preferably, described microcomputer 13 connects printer 14.
On above-described embodiment preferably, described microcomputer 13 connects display 15.
On above-described embodiment preferably, described microcomputer 13 connects usb interface module 16.
Based on above-mentioned, this utility model is for handset audio test problem present on market, design a kind of acoustic signals sent by smart mobile phone, audio frequency non-electric charge quantity signalling is converted to voltage signal, it is then sent through in one-level linear amplifier circuit, frequency-selecting is carried out by filter circuit, two paths of signals transmission it is divided into again: a road is to be amplified to designated magnitude after filtering after signal damping amplifies and promotes, audio frequency non-electric charge quantity signalling is converted to voltage signal, it is then sent through in one-level linear amplifier circuit, frequency-selecting is carried out by filter circuit, two paths of signals transmission it is divided into again: be amplified to designated magnitude through second amplifying circuit again after signal damping amplifies and promotes, then send into microsystem by photoelectrical coupler to process, make detect the dynamic range of signal and can disposal ability strengthen, this test installation cost is low, measuring accuracy is high.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (4)
- null1. the audio quality test device for smart mobile phone，It is characterized in that，Including surface acoustic wave filter (1) and sound transducer (2)，Described sound transducer (2) is installed on the shell of smart mobile phone by surface acoustic wave filter (1)，Smart mobile phone sends audio carrier signal and is captured by sound transducer (2)，And by sound transducer (2), audio frequency non-electric charge quantity signalling is converted to voltage signal and delivers in one-level linear amplifier circuit (3)，Signal is amplified by described one-level linear amplifier circuit (3)，And carry out frequency-selecting by filter circuit (4)，Described filter circuit (4) connects second amplifying circuit (5)，Described second amplifying circuit (5) is connected by shaping circuit (6) photoelectrical coupler (7)，Signal is divided into two-way by described photoelectrical coupler (7)，One tunnel is sent into microcomputer (13) and is carried out measurement and the signal processing of resonant frequency，Logical gate of separately leading up to triggers circuit (8) and sends into upper limit comparator (9) and lower limit comparator (10)，Described upper limit comparator (9) and lower limit comparator (10) pass sequentially through sample circuit (11)、Detecting circuit (12) is connected with second amplifying circuit (5).
- A kind of audio quality for smart mobile phone the most according to claim 1 tests device, it is characterised in that: described microcomputer (13) connects printer (14).
- A kind of audio quality for smart mobile phone the most according to claim 1 tests device, it is characterised in that: described microcomputer (13) connects display (15).
- A kind of audio quality for smart mobile phone the most according to claim 1 tests device, it is characterised in that: described microcomputer (13) connects usb interface module (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620207261.5U CN205584305U (en) | 2016-03-17 | 2016-03-17 | A audio frequency quality testing arrangement for smart mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620207261.5U CN205584305U (en) | 2016-03-17 | 2016-03-17 | A audio frequency quality testing arrangement for smart mobile phone |
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| CN205584305U true CN205584305U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620207261.5U Expired - Fee Related CN205584305U (en) | 2016-03-17 | 2016-03-17 | A audio frequency quality testing arrangement for smart mobile phone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11953468B2 (en) | 2020-07-01 | 2024-04-09 | Nokia Technologies Oy | Apparatus, method and computer program for detecting defects |
-
2016
- 2016-03-17 CN CN201620207261.5U patent/CN205584305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11953468B2 (en) | 2020-07-01 | 2024-04-09 | Nokia Technologies Oy | Apparatus, method and computer program for detecting defects |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20210317 |
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| CF01 | Termination of patent right due to non-payment of annual fee |