CN101063641A - Method for testing digital products and special equipment thereof - Google Patents
Method for testing digital products and special equipment thereof Download PDFInfo
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- CN101063641A CN101063641A CNA2006100506076A CN200610050607A CN101063641A CN 101063641 A CN101063641 A CN 101063641A CN A2006100506076 A CNA2006100506076 A CN A2006100506076A CN 200610050607 A CN200610050607 A CN 200610050607A CN 101063641 A CN101063641 A CN 101063641A
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Abstract
This invention relates to one digital product test method, which adopts digital product and loads with test program software standard audio files and comprises the following steps: the product displaying the standard audio files and sending the sound to the microphone through sound isolation environment; then generating audio files on horn sound; the product uses audio comparison program to compare the audio file and standard frequency files; according to the comparison audio frequency test parameters comparing the audio frequency test parameters and standard parameters to output results. This invention also discloses one special device.
Description
Technical field
The present invention relates to the measuring technology of a kind of digital product such as mobile phone, MP4, digital camera quality, relate to method of testing and relevant device.
Background technology
Present international digital product such as mobile phone, MP3, MP4, no matter how high automaticity is for the pattern of the production test function that digital camera, digital camera, intelligent digital TV domain are general, how powerful function is, they still are that the sensor that tradition relies on the test macro is gathered the test parameter of measurand, changed, analyzed by computer again, the result with analysis result and standard compares the final test judged result " qualified, defective " of output at last.
The enterprise that digital product is carried out attribute test not only needs testing apparatus that the every mass parameter of product is gathered, and also needs data analysis system to evaluate last quality.Domestic most testing apparatus all is to introduce at present, price is very expensive to be realized the mobile phone partial function is detected as certain state's technology platform product dependence cost 300,000 Renminbi/sound radio frequency testing platform of platform of introducing, quite a few video capability does not also realize fully, and equipment is quite complicated, the test fixture of most of product and test board coupling also needs to be provided by this state the said firm fully, breaks down often to return this state's maintenance.
The test that more domestic in addition enterprises produce relies on workman's eyes, ear in a large number and tests.Need carry out SMT mainboard moulding Function detection at least as mobile phone products at production line; Final assembly QC1 (QC:Quality check is a quality testing station title) Function detection; The QC2 Function detection; Four road Function detection such as OQC Function detection.Renovate slide phone and also will renovate the moulding Function detection.Average per pass detects station needs three to detect the workman.Also to carry out the QC sampling observation after per pass detects in addition.In these detect, domestic technique platform technology product is at present basic to rely on experienced detections workman with eye detection video capability (camera, display screen, etc.), detects audio-frequency function (microphone, loudspeaker, motor (for the digital product generation shakes) etc.) with ear.
Thus to a certain extent as can be seen, because the testing apparatus costliness is difficult in maintenance, operation inconvenience, the manpower consumption is big, causes the cost of digital product to have quite a few to consume in the production functional test.However, though examination criteria differs, workman's omission and cause individual product arrived market still can find malfunctioning such as microphone, loudspeaker are noiseless, motor does not have and shakes, shows bad or the like functional fault.Test has become and has reduced cost and the bottleneck with efficient of improving the quality.Low-cost, high efficiency, high-quality in this case production test system can find new profit breakthrough point for enterprise.
Summary of the invention
Primary technical matters to be solved by this invention provides a kind of method of testing of digital product, the hardware that it utilizes digital product self to be had, just can carry out test evaluation in conjunction with last testing software to the audio-frequency unit of digital product, need not expensive testing apparatus, the method simple and fast reduces testing cost greatly.
Another technical matters to be solved by this invention provides a kind of method of testing of digital product, the hardware that it utilizes digital product self to be had, just can carry out test evaluation in conjunction with last testing software to the video section of digital product, need not expensive testing apparatus, the method simple and fast reduces testing cost greatly.
Another technical matters to be solved by this invention provides a kind of isolated plant of above-mentioned digital product method of testing, and it is simple and practical, and is with low cost, convenient to operation.
The present invention solves the technical scheme that above-mentioned primary technical matters adopts: a kind of method of testing of digital product, it adopts digital product to be measured, test plan software and standard audio file on it is characterized in that in digital product, loading, the playing function of utilizing digital product to carry is play the standard audio file and is sounded on loudspeaker, then, utilize under the sound insulation environment, directly with the transfer voice of loudspeaker to the microphone of digital product, or utilize transfer voice pipe under the test environment, the transfer voice of loudspeaker is reflexed on the microphone of digital product, the digital product utilization carries is talked about the audio file that function generates speaker sound relevant comparison to be measured once more, digital product utilizes audio frequency comparison algorithm program, the audio file and the standard audio file of comparison to be measured are compared, generate the audio-frequency test parameter according to the audio frequency comparison algorithm, audio-frequency test parameter and audio standard parameter are compared,, output test result according to comparative result.
As further improvement, standard picture file in above-mentioned digital product, can also loading, the Presentation Function that utilizes digital product to carry generates the normal pictures file and Shows Picture on display screen, then, utilize the reflective optical system under the test environment, reflex to the camera of digital product with Showing Picture, the shooting camera function that the digital product utilization carries will Show Picture and generate the picture file of relevant comparison to be measured once more, digital product utilizes figure comparison algorithm program, the picture file and the normal pictures file of comparison to be measured are compared, generate the video measurement parameter according to the figure comparison algorithm, video measurement parameter and video standard parameter are compared, according to comparative result, output test result, it makes digital product also can detect evaluation to the video section of oneself.
Useful is, above-mentioned test result comprises that whether qualified information, Q factor and defective quality parameter directly are presented on the display screen of digital product or spanned file is stored in the storer of digital product or spanned file is stored in the SD card or T-FLASH card of digital product, and the handled easily personnel carry out observed and recorded.
What be highly profitable is, above-mentioned test plan software and standard audio file or normal video file can also be pre-installed in the SD card or T-FLASH card of digital product, during test, SD card or T-FLASH card are inserted in the digital product to be measured, wait is uploaded and setup test, avoid testing software and standard audio file, normal video file to tie up digital product limited hardware resource like this, method is science more rationally, traditional digital product manufacturing process is not had special requirement basically, the more convenient popularization of manufacturer is adopted.
At last, above-mentioned digital product is deleted test plan software and standard audio file, generation audio file or normal video file, generation video file after test finishes from the storer of digital product, digital product is not produced negative effect basically.
Digital product of the present invention can be the digital product that mobile phone, MP3, MP4, digital camera, digital camera, intelligent digital TV etc. have microphone, loudspeaker, camera and display screen.
The present invention solves the technical scheme that above-mentioned another technical matters adopts: the isolated plant in a kind of said method, it is characterized in that testing cassete and the lid that is sealed and matched with testing cassete, they form the sound insulaton test space, the transfer tube that the microphone that is equipped with sound horn with digital product to be transferred to digital product in testing cassete goes, the two ends of transfer tube have the coupling part of carrying out detachable connection with the surface of digital product.
Useful is that above-mentioned transfer tube adopts around the property pipe, handled easily person use.
What be highly profitable is, be provided with in the above-mentioned testing cassete reflective optical system of being made up of the polylith two-way mirror is installed, two-way mirror is to be fixed on the Connection Block, and Connection Block is to adopt rotating shaft to be fastened on rotationally on separately the fixed mount, and fixed mount is mounted on the internal face of testing cassete; Also can be to be equipped with the optical reflection pipe in the testing cassete, distributing in the pipeline is provided with the polylith two-way mirror, and the light of an end mouth of pipe is reflexed to the other end mouth of pipe, and the two ends of the mouth of pipe have the coupling part of carrying out detachable connection with the surface of mobile phone, simple and practical, with low cost.
Useful is, the coupling part of above-mentioned detachable connection is adopted rubber suction cups or had the bonding portion of non cohesive gel layer, and handled easily the person manipulate, the efficient height.
At last, above-mentioned lid has base plate, and base plate is connected in the testing cassete by chute and rail engaging structure telescopically, simultaneously, the actuating unit that promotes lid is housed on the testing cassete, improves the test automation degree, makes things convenient for the user.
Compared with prior art, the invention has the advantages that: the method for testing of this digital product, the hardware that it utilizes digital product self to be had, just can carry out test evaluation in conjunction with last testing software to the audio-frequency unit of digital product and video section even vibrating motor, need not expensive testing apparatus, the method simple and fast, reduce testing cost greatly, the efficient height, the test mass height, isolated plant is simple and practical, and is with low cost, convenient to operation, be adapted at mobile phone, MP3, MP4, digital camera, digital camera, intelligent digital TV etc. and promote the use of.
Description of drawings
Fig. 1 is the flow chart of handset testing method;
Fig. 2 is the stereographic map (under the positive surface state) of isolated plant;
Fig. 3 is the stereographic map (under the reverse side state) of isolated plant;
Fig. 4 is the stereographic map (laying down under the lid state) of isolated plant;
Fig. 5 is the stereographic map (laying down under lid and the side plate state) of isolated plant;
Fig. 6 is the structural drawing of the two-phonon process of isolated plant;
Fig. 7 is the synoptic diagram of the two-phonon process of isolated plant;
Fig. 8 is the structural drawing of the sound test process of isolated plant;
Fig. 9 is the periscope structural representation of isolated plant;
The deflection of Figure 10 image is synoptic diagram relatively.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Because digital product is a lot, they can be mobile phone, MP4, digital camera, digital camera or the like digital products, and they are the same about the method for testing of Voice ﹠ Video with the test of following mobile phone.
As Fig. 1-6 signal; special-purpose device in handset testing method; it includes testing cassete 1 and lid 2; they form the test space 19 of sealing; for sound insulating seal; with the inside of sound-proof material lining at testing cassete 1 and lid 2; certainly; also can adopt sound-proof material to make testing cassete 1 and lid 2; lid 2 usefulness screws are connected with base plate 5; base plate 5 upper surface settings are fixed with mobile phone seat 3; form the inserting groove 13 that cooperates with mobile phone on the mobile phone seat 3; mobile phone 4 can be pegged graft be fixed in the mobile phone seat 3 positioning and fixing live; in order to protect mobile phone 4; in inserting groove 13, be lined with the flexible protective material; for the reflection of the picture on the mobile phone display screen 17 is transferred on the camera 18 of mobile phone; in 1 li setting of testing cassete the reflective optical system that the polylith two-way mirror is formed is installed; present embodiment is to have adopted three reflecting glasses 8; they are arranged on the left and right sides and top side location of testing cassete 1 the inside; two-way mirror is that bonding or screw retention is fastened on the Connection Block 9 with glue; Connection Block 9 is fastened on separately the fixed mount 10 rotationally by rotating shaft, sees Fig. 7.It can regulate the reflection angle of rear reflector, and for the shooting end provides suitable acquisition angles, fixed mount 10 is mounted on the internal face of testing cassete 1 again, thereby the picture on the mobile phone display screen 17 is reflexed on the camera 18 at the mobile phone back side, sees Fig. 1-3.Certainly the reflective optical system in the testing cassete also can be another kind of structural design, see Fig. 9, it is exactly an optical reflection pipe 20, reflection tube 20 presents U-shaped substantially, distribute in the pipeline and be provided with four blocks of two-way mirrors 21, they are distributed in the turning site 22 of pipeline, presenting 45 degree tilts, constitute similar periscope structure, the light of the one end mouth of pipe is reflexed to the other end mouth of pipe, thereby the picture on the mobile phone display screen 17 is reflexed on the camera 18 at the mobile phone back side, the two ends of the mouth of pipe have the coupling part of carrying out detachable connection with the surface of mobile phone.Use for convenience, the coupling part of detachable connection is adopted rubber suction cups or is had the bonding portion of non cohesive gel layer, by sucker absorption with bonding connection of glue optical reflection pipe 20 is installed on the mobile phone 4.See Fig. 8, in testing cassete 1, at least also need to be equipped with the transfer tube 14 that microphone 16 that loudspeaker 15 sounding with mobile phone are transferred to mobile phone goes, transfer tube 14 can adopt around the property pipe, the convenient use, its very similar doctor is used for listening the stethoscope of patient's heartbeat, it intercepts external sound and disturbs, the transfer voice channel of high-quality is provided, the two ends of transfer tube 14 also have the coupling part of carrying out detachable connection with the surface of mobile phone, they are rubber suction cups or the bonding portion that has the non cohesive gel layer, in present embodiment, transfer tube 14 is set directly in the mobile phone seat 3, uses convenient.If under the better situation of testing cassete 1 sound insulation, also can directly utilize the sound insulation test environment certainly.In order to improve automaticity, lid 2 usefulness screws are connected with base plate 5, both sides have guide rail 23 below the base plate 5, accordingly, the both sides of testing cassete the inside have chute 24, cooperate with chute, lid 2 can be linked and packed in box telescopicly, mobile phone seat 3 is provided with and is fixed on the base plate 5, and the actuating unit that promotes lid is housed on the testing cassete 1, drives lid and makes expanding-contracting action.Actuating unit can adopt cylinder 11, cylinder 11 is fixed in the base 7 of box, the movable push bar 12 of cylinder is connected with lid 2, make the expanding-contracting action drive lid of the movable push bar of cylinder make expanding-contracting action, realize the opening and closing of lid, the working mechanism of relevant cylinder please refer to traditional pneumatic mechanism, here no longer carry out deep discussion, certainly, actuating unit also can adopt motor, motor mounting is in the testing cassete base, gear on the motor output shaft cooperates with the tooth bar of lid bottom surface, be provided with the travel switch that cooperates with the base plate tail end at testing cassete mouth position and opposite location, the stroke of lid base plate control effectively, in case lid puts in place, the base plate tail end is contacted with travel switch, automatically cut off the power unit of motor, these technology see also the folding lid mechanism of DVD digital broadcast machine, also are very traditional technology.The top of testing cassete 1 can be provided with the indicating section 6 that light transmitting fiber is made, and finishes display screen or pilot lamp when glittering when mobile phone test, makes indicating section 6 also can emit beam out, reminds test to finish.
Handset testing method of the present invention is, prepare step in advance, mobile phone to be measured is inserted in the holder of lid base plate, test plan software and normal pictures file have been mounted with for mobile phone, the standard audio file, press the start key on the cell phone keyboard, start test plan software, some mobile phones is supported SD card or T-FLASH card, can plug SD card or T-FLASH card, on SD card or the T-FLASH card with test plan software and normal pictures file, the standard audio file is pressed the start key setup test, then again, with transfer tube by between sucker or the bonding loudspeaker and microphone that are fastened on mobile phone, if certainly testing cassete sound insulation mass ratio under the situation, also can not adopt transfer tube preferably, utilize the sound insulation environment of testing cassete, present embodiment is the transfer tube that utilizes in the mobile phone seat, and is very convenient quick.Press the control knob on the testing cassete, make cylinder work, promote lid and close, make the inside constitute the benchmark test environment of the sound insulation of sealing every light.
The audio-frequency test step, load in the mobile phone and go up test plan software and standard audio file, the playing function of utilizing mobile phone to carry is play the standard audio file and is sounded on loudspeaker, then, utilize under the sound insulation environment, directly with the transfer voice of loudspeaker to the microphone of mobile phone, or utilize transfer voice pipe under the test environment, with the transfer voice of loudspeaker to the microphone of mobile phone, mobile phone is under test software programs control, call in the storer or SD card or T-FLASH card in the standard audio file, the playing function that utilization carries, with standard audio file process analog-converted, convert digital signal to simulating signal, play out sound by the loudspeaker on the mobile phone, and the microphone on the mobile phone is through the transfer voice pipe or directly by the sound insulation test environment, receive test sound, utilization carries is talked about function, analog signal conversion is become corresponding digital signal, generate the audio file of relevant comparison to be measured, mobile phone utilizes audio frequency comparison algorithm program, the audio file and the standard audio file of comparison to be measured are compared, be exactly to generate the audio-frequency test parameter according to the audio frequency comparison algorithm, audio-frequency test parameter and audio standard parameter are compared, according to comparative result, output test result.In order to simplify procedures, reduce the committed memory space, the algorithm of choosing among the present invention is that the different source of sound of a plurality of audio frequency parameter emphasis is compared one by one, select the audio files that volume gradually changes from low to high as the volume parameters aspect, the frequency parameter aspect is selected the audio files that frequency gradually changes from low to high, and export the test value of each parameter one by one, each parameter area of test value and setting is contrasted one by one, this scope can be debugged setting in software, if within this scope, just test the next item down, otherwise the termination test procedure shows that error message on display screen, forwards the result to and exports step.Audio frequency comparison algorithm program can be a lot, and it can calculate with reference to the mean value computation formula and the variance computing formula of traditional statistical theory, algorithm that also can other finishing.
Accurate audio frequency of bidding and audio frequency to be detected are respectively s_frequency and m_frequency, and the difference that detects each point of audio frequency and standard audio is D_V, then calculates average μ (x) and the variances sigma (x) of D_V, and its formula is respectively:
X wherein
iAudio value for each point of D_V.Can judge whether variances sigma (x) satisfies threshold value F according to actual set threshold value F.
Be the video measurement step then, mobile phone is under test software programs control, call in the storer or SD card or T-FLASH card in the normal video file, mobile phone loads goes up the standard picture file, the Presentation Function that utilizes mobile phone to carry, with normal video file such as picture process analog-converted, convert digital signal to simulating signal, the normal pictures file is generated on display screen to Show Picture, then, utilize the reflective optical system under the test environment, reflex to Showing Picture on the camera of mobile phone, the shooting camera function that the mobile phone utilization carries is taken pictures, again it is converted to corresponding digital signal, generate the digital photo file of relevant comparison to be measured thereby will Show Picture once more, mobile phone utilizes figure comparison algorithm program, and the picture file and the normal pictures file of comparison to be measured compared, generate the video measurement parameter according to the figure comparison algorithm, video measurement parameter and video standard parameter are compared,, output test result according to comparative result.In order to simplify procedures, reducing the algorithm of choosing among committed memory space the present invention is that many different pictures of video parameter emphasis are compared one by one, as image quality parameter aspect select respectively three pure red, ethereal blue, pure three green pictures, a picture that has only cross is selected in off normal rotation parameter aspect, and export the test value of each parameter one by one, each parameter area of test value and setting is contrasted one by one, this scope can be debugged setting in software, if within this scope, just test the next item down, otherwise termination test procedure, show error message, forward the result to and export step.Video comparison algorithm program program can be a lot, and it can calculate with reference to the mean value computation formula and the variance computing formula of traditional statistical theory, algorithm that can other finishing.
Introduce the statistics and the comparative approach of visual deflection and aberration below:
The visible Figure 10 of principle, the postrotational angle of image is a, and the extended line angle of intersection of the extended line of line segment AB and level is r, knows a=angle, angle r by image and supplementary angle principle, the A that sets up an office is respectively (fDstX1 with the coordinate of putting B, fDstY1), (fDstX2, fDstY2), and be translated into the angle number, then r=antan ((fDstY2-fDstY1)-(fDstX2-fDstX1)) * π/180 are provided with angle threshold T by demand, see whether postrotational angle value r satisfies threshold value T.
Detect the misalignment principle of two sub-pictures:
Accurate image of bidding and image to be detected are respectively s_image and m_image, and the difference of each pixel of detected image and standard picture is D_R, then calculate average μ (x) and the variances sigma (x) of D_R, and its formula is respectively:
X wherein
iValue for the pixel of D_R.Its color here can be, the green and blue colors of RGB three looks promptly red, makes statistical method carry out statistical respectively to red, green and blue color component.
Can judge whether variances sigma (x) satisfies threshold value T according to actual set threshold value T.
Then be that the result exports step, mobile phone comprises that with test result whether qualified information, Q factor and defective quality parameter directly are presented on the display screen of mobile phone, generate simultaneously in the storer that destination file is stored in mobile phone, mobile phone for supporting SD card or T-FLASH card also can be stored in spanned file in the SD card or T-FLASH card of mobile phone.
Be deletion or storing step at last, operating personnel press the button on the testing cassete, the lid of testing cassete is under the promotion of cylinder movable push bar, open once more, operating personnel take out mobile phone from the base plate mobile phone seat, information on the observed and recorded mobile phone display screen, for passing through test and qualified mobile phone, operating personnel can press and leave out start key, after mobile phone detects this button, the operating system software of mobile phone is automatically with test plan software and standard audio file, generate audio file or normal video file, generate video file and from the storer of mobile phone, delete, even also test result file also can be left out; Otherwise, for the mobile phone that does not pass through test, the operating system of mobile phone still with software automatically with test plan software and standard audio file, normal video file storage in storer, for the mobile phone of supporting SD card or T-FLASH card, can be retained in SD card or the T-FLASH card, only leave out the intermediate information files such as audio file, video file and test result file of generation.
The flow chart of whole test process sees 1, and wherein picture b, source of sound f Load Image and source of sound by the collection of standard machine and deposit tested machine in before test, and promptly program is taken out picture and source of sound and be shown on display screen or loudspeaker, the microphone by internal memory.
The principle of work of the inventive method and isolated plant is such, and digital product such as mobile phone just are equivalent to computer to a certain extent at hardware aspect.For example mobile phone is made up of baseband portion and radio frequency part.Radio frequency part is exactly the analog carrier signal to external world's transmission of being used for that the digital signal that has the communication information of low frequency that base band is transmitted is loaded into high frequency, or receive the high-frequency signal of the digital signal that has the communication information that is loaded with low frequency, therefrom extract the digital signal that has the communication information of low frequency and pass to baseband portion; Baseband portion is mainly handled storage and the man-machine communication is provided passage various information (comprising and the mutual information transmitted of radio frequency), itself and computer hardware are similar, and the digital product mobile phone possesses certain sensor such as microphone equally, camera, moreover can simply handle the data of oneself gathering, relatively, judge and output test judged result, be exactly the computer that the peripherals of an indispensability has radio communication function when solidifying in simple terms, therefore in test process, all be equivalent to a test board after every digital product mobile phone transforms through extraneous simple device, in addition, test equipment is to audio frequency, the judgement of video is than human ear, it is more accurate that eyes are judged, objective.The present invention makes us can make full use of these resources, and the manufacturing cost of product will reduce greatly; Quality is more guaranteed; Efficient also can improve greatly simultaneously.Just under this condition, this overlaps digital product selftest system and arises at the historic moment.And obtain following technological merit
Cost is low, makes full use of digital product own resources such as processor, storer, and sensor reduces external accessory as much as possible.
The test mass height, test automation degree height, the disconnected probability of erroneous judgement reduces; For test products provides a reference atmosphere, also can realize the objective comparison of standard machine (by quality certification, general research and development department provides) and machine Q factor to be measured.
The efficient height, system integration degree height can walk abreast the data parameter is gathered, linear then the processing, and test result is directly outputed to the display end of product self.
Claims (11)
1. the method for testing of a digital product, it adopts digital product to be measured, test plan software and standard audio file on it is characterized in that in digital product, loading, the playing function of utilizing digital product to carry is play the standard audio file and is sounded on loudspeaker, then, utilize under the sound insulation environment, directly with the transfer voice of loudspeaker to the microphone of digital product, or utilize transfer voice pipe under the test environment, the transfer voice of loudspeaker is reflexed on the microphone of digital product, the digital product utilization carries is talked about the audio file that function generates speaker sound relevant comparison to be measured once more, digital product utilizes audio frequency comparison algorithm program, the audio file and the standard audio file of comparison to be measured are compared, generate the audio-frequency test parameter according to the audio frequency comparison algorithm, audio-frequency test parameter and audio standard parameter are compared,, output test result according to comparative result.
2. method of testing according to claim 1, standard picture file on it is characterized in that in digital product, loading, the Presentation Function that utilizes digital product to carry generates the normal pictures file and Shows Picture on display screen, then, utilize the reflective optical system under the test environment, reflex to the camera of digital product with Showing Picture, the shooting camera function that the digital product utilization carries will Show Picture and generate the picture file of relevant comparison to be measured once more, digital product utilizes figure comparison algorithm program, the picture file and the normal pictures file of comparison to be measured are compared, generate the video measurement parameter according to the figure comparison algorithm, video measurement parameter and video standard parameter are compared, according to comparative result, output test result.
3. method of testing according to claim 1 and 2 is characterized in that described test result comprises that whether qualified information, Q factor and defective quality parameter directly are presented on the display screen of digital product or spanned file is stored in the storer of digital product or spanned file is stored in the SD card or T-FLASH card of digital product.
4. method of testing according to claim 3, it is characterized in that described test plan software and standard audio file or normal video file are to be pre-installed in the SD card or T-FLASH card of digital product, during test, SD card or T-FLASH card are inserted in the digital product to be measured, wait for and uploading and setup test.
5. method of testing according to claim 4, it is characterized in that described digital product after test finishes with test plan software and standard audio file, generate audio file or normal video file, generate video file and from the storer of digital product, delete.
6. according to described any one method of testing of claim 1 to 5, it is characterized in that described digital product is mobile phone, MP4 or digital camera, digital camera.
7. the isolated plant in claim 1 method, it is characterized in that testing cassete and the lid that is sealed and matched with testing cassete, they form the sound insulaton test space, the transfer tube that the microphone that is equipped with sound horn with digital product to be transferred to digital product in testing cassete goes, the two ends of transfer tube have the coupling part of carrying out detachable connection with the surface of digital product.
8. isolated plant according to claim 7 is characterized in that described transfer tube adopts around the property pipe.
9. according to claim 7 or 8 described isolated plants, it is characterized in that being provided with in the described testing cassete reflective optical system of being made up of the polylith two-way mirror is installed, two-way mirror is to be fixed on the Connection Block, Connection Block is to adopt rotating shaft to be fastened on rotationally on separately the fixed mount, and fixed mount is mounted on the internal face of testing cassete; Also can be to be equipped with the optical reflection pipe in the testing cassete, distributing in the pipeline be provided with the polylith two-way mirror, and the light of an end mouth of pipe is reflexed to the other end mouth of pipe, and the two ends of the mouth of pipe have the coupling part of carrying out detachable connection with the surface of digital product.
10. isolated plant according to claim 9, the coupling part that it is characterized in that described detachable connection adopt rubber suction cups or have the bonding portion of non cohesive gel layer.
11. isolated plant according to claim 10 is characterized in that described lid has base plate, base plate is connected in the testing cassete by chute and rail engaging structure telescopically, simultaneously, the actuating unit that promotes lid is housed on the testing cassete.
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2006
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