CN103118205A - Method and device for testing call performance of downlink receiving terminal in noisy environment - Google Patents
Method and device for testing call performance of downlink receiving terminal in noisy environment Download PDFInfo
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- CN103118205A CN103118205A CN2013100076754A CN201310007675A CN103118205A CN 103118205 A CN103118205 A CN 103118205A CN 2013100076754 A CN2013100076754 A CN 2013100076754A CN 201310007675 A CN201310007675 A CN 201310007675A CN 103118205 A CN103118205 A CN 103118205A
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Abstract
The invention relates to a method and a device for testing call performance of downlink receiving terminal in noisy environment. A computer is connected with a horn, an artificial ear, a wireless integrated test instrument and a terminal under test respectively through a front end. The artificial ear and the terminal under test are mounted on an artificial head. A multi-channel audio card, a near-end audio card, a signal acquisition unit and a control unit are mounted at the front end. The terminal under test is connected with the wireless integrated test instrument through cables or antenna. The method and the device for testing the call performance of the downlink receiving terminal in noisy environment overcomes the existing technological defects that performance of communication terminal such as a receiving end of telephone receiver cannot be tested objectively, provides an effective and accurate method for measuring and evaluating the receiving call performance of the communication terminal in noisy environment, and solves the problem that receiving end voice performance of the communication terminal cannot be evaluated in noisy environment formerly by removing effect of environment noise and focusing on the voice from the receiving end of the terminal under test through the artificial ear.
Description
Technical field
The present invention relates to communication terminal under noise circumstance and answer the speech quality apparatus for evaluating of end, particularly under noise circumstance to descending receiving terminal call performance method of measurement and device.
Technical background
Before the present invention, existing technology all can't communicate the test of the descending receiving terminal call performance of terminal under noise circumstance, namely carries out the objective examination for the performance of the receiving terminals such as receiver of communication terminal.Particularly some communication terminal has added automatic regulating volume and the processing that strengthens definition under noise circumstance at this end of receiver, these functions must be tested under noise, because function can't start when peace and quiet, also just can't detect these functions like this under quiet environment.And for mobile communication terminal, the frequency of using under noise is very high.
Summary of the invention
The object of the invention is to overcome defects, develop a kind of relating under noise circumstance descending receiving terminal call performance method of measurement and device.
Technical scheme of the present invention is:
Under noise circumstance to descending receiving terminal call performance measurement mechanism, its technical characteristics is that computer connects respectively loudspeaker, artitificial ear, wireless comprehensive test instrument, terminal to be measured through front end, artitificial ear, terminal to be measured are placed on the dummy head, and multichannel sound card, near-end sound card, signals collecting parts, control assembly are set in front end; Terminal to be measured connects wireless comprehensive test instrument by cable or antenna.
Another technical scheme of the present invention is:
Under noise circumstance, to descending receiving terminal call performance method of measurement, its major technique step is:
(1) signal of artitificial ear reception for the first time, carry out time unifying;
(2) adaptive-filtering;
(3) sound that sends of terminal to be measured;
(4) language performance evaluation;
(5) signal of artitificial ear reception for the second time;
(6) be sent to time unifying, adaptive-filtering and idea performance evaluation;
(7) signal of the signal of artitificial ear reception for the first time, artitificial ear reception for the second time transmits simultaneously.
Advantage of the present invention and effect be to propose one effectively, the measurement appraisal procedure of the reception call performance of the communication terminal under noise circumstance accurately, the impact of ambient noise is removed, only concentrate on the sound from terminal receiving terminal to be measured that artitificial ear is heard, thereby can't assess the problem of the receiving terminal sound performance of communication terminal under noise before having solved.
Other concrete advantages of the present invention and effect will go on to say below.
Description of drawings
Fig. 1---general structure block diagram of the present invention.
Fig. 2---in the present invention, schematic flow sheet is play and is received in test with embodiment.
In Fig. 1, each label represents that corresponding component names is as follows:
Loudspeaker 1 (1-1,1-2,1-3,1-4,1-5,1-6,1-7,1-8), front end 2, wireless comprehensive test instrument 3, antenna 4, computer 5, dummy head 6, artitificial ear 7, terminal to be measured 8.
Embodiment
Technical thought of the present invention is:
The various noises of Computer Storage and the test case of far-end sound, then do twice broadcast, for the first time namely: certain noise is sent on the loudspeaker that produce noise field by the multichannel sound card play, far-end sound is sent on the receiving system of terminal to be measured such as receiver by wireless comprehensive test instrument play simultaneously; For the second time: in the situation that all settings and equipment etc. are all constant, will send to by the multichannel sound card again with identical for the first time noise and play on the loudspeaker that produce noise field, but this time, not play far-end sound on terminal to be measured.Artitificial ear on the dummy head receives broadcast and play signal for the first time for the second time, imports signal into computer by front end, and computer is analyzed, calculated for twice signal that receives.Above operation is carried out repetition for each noise signal.
The below illustrates.
As shown in Figure 1:
Under noise circumstance, descending receiving terminal call performance measurement mechanism is mainly contained loudspeaker 1 (it is 1-1,1-2,1-3,1-4,1-5,1-6,1-7,1-8 that 8 loudspeaker 1 are arranged in this example), dummy head 6, wireless comprehensive test instrument 3, antenna 4, terminal to be measured 8, front end 2 and computer 5 compositions of a plurality of broadcast noises; Artitificial ear 7, terminal to be measured 8 are arranged on dummy head 6, and computer 5 connects front end 2; Front end 2 comprises multichannel sound card, near-end sound card, signals collecting parts, control assembly; Front end 2 connects respectively loudspeaker 1, wireless comprehensive test instrument 3, and terminal 8 to be measured comprises mobile phone etc.; Terminal 8 to be measured connects wireless comprehensive test instrument 3 by cable or antenna (wireless); 8 loudspeaker 1 surround into a circle, and dummy head 6 is placed in the circle center position.
Loudspeaker 1 are used for playing noise, in order to the various noise fields in simulated environment; Remote test use-case in computer 5 sends to the receiving system of terminal 8 to be measured by wireless comprehensive test instrument 3, artitificial ear 7 is to simulate the sound that people's ear is listened to the receiving system of terminal 8 to be measured, certainly simultaneously also can receive ambient noise.
The hardware of front end 2 is mainly the collection for the broadcast sound of system and recording and control and signal, specifically, front end 2 comprises that the multichannel sound card is used for playing environment noise, signals collecting parts and is used for volume and the sequential of control broadcast and recording for the signal of recording the needs analysis, control assembly.The running software of rear end in computer, for generation of, storage test case, and the sound performance of the receiving system of analytical calculation terminal 8 to be measured.
A concrete example is:
8 loudspeaker 1 are according to differing 45 degree along circumferential arrangement, and each loudspeaker 1 has a lead-in wire, is connected respectively to multichannel sound card and the control assembly of front end 2; Noise testing use-case in computer 5 by multichannel sound card and the control assembly of front end 2, is play corresponding noise and is come simulated environment noise on loudspeaker 1; The loudspeaker 1 here can be play noise as required one by one, the loudspeaker 1 that also can play simultaneously noise or the various quantity broadcast noise that combines.
The quantity of loudspeaker 1 and put arrangement mode and be not limited to above example can have other form.
The broadcast of noise of the present invention and near-end speech and processing method, as shown in Figure 2:
1. store various noise testing use-cases and far-end sound test case in computer;
2. for a kind of noise, carry out play operation twice;
3. for the first time:
A) certain noise testing use-case that stores in computer is sent to by the multichannel sound card play on loudspeaker;
B) simultaneously far-end sound test case is sent to by wireless comprehensive test instrument or cable on the receiving system of terminal to be measured and play;
C) artitificial ear on the dummy head receives the mixed signal of the psophometer noise that sound that the receiving system of terminal to be measured plays and loudspeaker play, and this signal is transferred back in computer preserves;
4. for the second time:
A) same noise testing use-case is sent to by the multichannel sound card play on loudspeaker;
B) still do not play any sound on the receiving system of current terminal to be measured;
C) dummy head's artitificial ear receives the noise that loudspeaker are play, and this noise signal is transferred back in computer preserves;
5. the above sight of broadcast for the first time and secondary broadcast sight can be exchanged, and namely only play for the first time noise, for the second time, have both play identical noise, also play far-end sound simultaneously.
6. computer and the front-end control volume and the time that send;
7. the multichannel sound card of front end sends to test case respectively in a plurality of loudspeaker, and an example is to adopt 8 loudspeaker, and is equiangularly arranged along circumference;
8. for the first time and for the second time signal that will receive of computer aligns, adaptive-filtering processes, and obtains the sound that purer terminal receiving system to be measured sends;
Computer sound that pure terminal receiving system to be measured is sent and for the second time signal namely only noisy signal carry out again analytical calculation, draw Performance Evaluation;
10. above operation can repeat for the situation of various noises, can draw the Performance Evaluation of the terminal receiving system to be measured under various noises.
As shown in Figure 2:
The concrete broadcast of noise and far-end sound test case and reception flow process:
The first step, the control assembly in computer or front end are sent control signal and are controlled the broadcast sequential of designed noise testing use-case, play passage and broadcast sound volume.
Second step, designed noise testing use-case plays out at loudspeaker, as ambient noise through multichannel sound card and the built-in or external power amplifier of loudspeaker in front end.
In the 3rd step, far-end sound test case sends to by wireless comprehensive test instrument on the receiving system of terminal to be measured and plays.
In the 4th step, same noise testing use-case is in the situation that all arrange and equipment is constant is operated twice.
The 5th step, for the first time, both play noise, also play far-end sound simultaneously.
In the 6th step, for the second time, strictly repeat primary noise and play, but do not play far-end sound.
In the 7th step, the signal that the artitificial ear on the dummy head receives primary noise and far-end sound mix reaches for the second time only noisy signal, is sent in computer by front end.
In the 8th step, the signal that collects for twice carries out time unifying, adaptive-filtering is processed, and obtains the sound that purer terminal receiving system to be measured sends.
The 9th step, the sound that computer sends pure terminal receiving system to be measured and for the second time signal namely only have noise to carry out again analytical calculation, draw the Performance Evaluation of the sound that terminal receiving system to be measured sends.
In the tenth step, other noises are repeated above operation, to assess the performance of the terminal receiving system to be measured under various noises.
Claims (7)
- Under noise circumstance to descending receiving terminal call performance measurement mechanism, it is characterized in that computer through front end or directly connect one or more loudspeaker, terminal to be measured, artitificial ear, the sound that the sound that the receiving system of artitificial ear reception terminal to be measured sends and loudspeaker send.
- Under noise circumstance according to claim 1 to descending receiving terminal call performance measurement mechanism, it is characterized in that computer connects respectively loudspeaker, artitificial ear, wireless comprehensive test instrument, terminal to be measured through front end, artitificial ear, terminal to be measured are placed on the dummy head, and multichannel sound card, near-end sound card, signals collecting parts, control assembly are set in front end; Terminal to be measured connects wireless comprehensive test instrument by cable or antenna.
- Under noise circumstance according to claim 1 to descending receiving terminal call performance measurement mechanism, it is characterized in that a plurality of loudspeaker surround into a circle, the dummy head is placed in the circle center position.
- Under noise circumstance according to claim 3 to descending receiving terminal call performance measurement mechanism, it is characterized in that 8 loudspeaker surround into a circle.
- Under noise circumstance to descending receiving terminal call performance method of measurement, it is characterized in that in the situation that experimental facilities arranges constant, noise testing use-case in computer is twice of loudspeaker repeat playing: once, both play noise, also play far-end sound at the communication terminal receiving system simultaneously, identical noise is only play in another time.
- Under noise circumstance according to claim 5 to descending receiving terminal call performance method of measurement, it is characterized in that following operating procedure:(1) signal of artitificial ear reception for the first time, carry out time unifying;(2) adaptive-filtering;(3) sound that sends of terminal to be measured;(4) language performance evaluation;(5) signal of artitificial ear reception for the second time;(6) be sent to time unifying, adaptive-filtering and idea performance evaluation;(7) signal of the signal of artitificial ear reception for the first time, artitificial ear reception for the second time transmits simultaneously.
- Under noise circumstance according to claim 5 to descending receiving terminal call performance method of measurement, it is characterized in that step is as follows:(1) determinand is placed on the dummy head, and artitificial ear is set on the dummy head, and the dummy head is arranged in the middle of a plurality of loudspeaker, and the signal of determinand is connected with the signals collecting parts of front end by cable or radio;(2) for the first time:I. the noise that stores in computer is sent in loudspeaker by the multichannel sound card;Ii. simultaneously the far-end sound test case that stores in computer is sent to the receiving system of terminal to be measured, as receiver of mobile phone etc.;Iii. in front end, the signals collecting parts record the signal that artitificial ear receives, and this signal is delivered to computer;(3) for the second time:I. not changing in the situations such as any configuration, equipment, the noise testing use-case identical with the front that stores in computer sent on loudspeaker by the multichannel sound card again;Ii. do not play far-end sound at the receiving system of terminal to be measured this moment;Iii. in front end, the signals collecting parts record the signal that artitificial ear receives, and this signal is delivered to computer;(4) computer signal that above twice artitificial ear received carries out time unifying, analytical calculation, thereby removes noise, only keeps the sound that terminal receiving system to be measured sends; The signal for the second time that the sound that the terminal receiving system to be measured that keeps sends and above artitificial ear are received namely only has noise not have the signal of far-end speech to compare, to analyze the frequency spectrum and the definition of comparing with noise of the sound that terminal receiving system to be measured sends.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400585A (en) * | 2013-07-24 | 2013-11-20 | 南京声准科技有限公司 | Device and method for evaluating objective performances of residual noise subjected to denoising |
| WO2019047055A1 (en) * | 2017-09-06 | 2019-03-14 | 深圳传音制造有限公司 | Downlink voice anti-noise test system and method for communication terminal |
| CN111415675A (en) * | 2020-02-14 | 2020-07-14 | 北京声智科技有限公司 | Audio signal processing method, device, equipment and storage medium |
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| US20010031040A1 (en) * | 2000-02-24 | 2001-10-18 | Paul Kaine | Line test apparatus with vibratory element |
| CN102510418A (en) * | 2011-10-28 | 2012-06-20 | 声科科技(南京)有限公司 | Method and device for measuring speech intelligibility at noisy environment |
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2013
- 2013-01-08 CN CN2013100076754A patent/CN103118205A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010031040A1 (en) * | 2000-02-24 | 2001-10-18 | Paul Kaine | Line test apparatus with vibratory element |
| CN102510418A (en) * | 2011-10-28 | 2012-06-20 | 声科科技(南京)有限公司 | Method and device for measuring speech intelligibility at noisy environment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400585A (en) * | 2013-07-24 | 2013-11-20 | 南京声准科技有限公司 | Device and method for evaluating objective performances of residual noise subjected to denoising |
| WO2019047055A1 (en) * | 2017-09-06 | 2019-03-14 | 深圳传音制造有限公司 | Downlink voice anti-noise test system and method for communication terminal |
| CN111415675A (en) * | 2020-02-14 | 2020-07-14 | 北京声智科技有限公司 | Audio signal processing method, device, equipment and storage medium |
| CN111415675B (en) * | 2020-02-14 | 2023-09-12 | 北京声智科技有限公司 | Audio signal processing method, device, equipment and storage medium |
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Application publication date: 20130522 |