CN101051955A - Method for detecting multimedia terminal audio frequency service quality performance - Google Patents
Method for detecting multimedia terminal audio frequency service quality performance Download PDFInfo
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- CN101051955A CN101051955A CN 200710074418 CN200710074418A CN101051955A CN 101051955 A CN101051955 A CN 101051955A CN 200710074418 CN200710074418 CN 200710074418 CN 200710074418 A CN200710074418 A CN 200710074418A CN 101051955 A CN101051955 A CN 101051955A
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Abstract
The method comprises: 1) adding an audio QoS feature test module into the audio transmission unit in simulation terminal; dividing the test data set obtained from the QoS feature test module into two routes; one route is inputted into the destination audio computer; another route is transmitted to a multi-media terminal to be tested and then is inputted to the destination audio computer; making an interaction between the simulation terminal and the multimedia terminal to be tested; 2) the current audio signal passes through the simulation terminal to form the current test data set; the destination audio terminal records a first time when the current test data enters into the computer and a second time when it enters the computer via the multi-media terminal; according to the first time and second time, estimating the audio QoS feature of the multi-media terminal.
Description
Technical field
The present invention relates to a kind of method of testing of multimedia terminal audio frequency service quality performance.
Background technology
In the development﹠ testing of multimedia terminal, usually need to measure QoS (the Quality of Service of multimedia terminal audio frequency, service quality) characteristic, to weigh under the heterogeneous networks state, the service band of multimedia terminal is given terminal use's actual impression and is obtained the key property of terminal inner QoS algorithm.Current, the QoS characteristic that comprises the multimedia terminal audio frequency relevant for the measurement of the QoS characteristic of multimedia terminal audio frequency with network or play buffering, mainly be based on the balance that minimizes network delay and Network Packet Loss, the algorithm that improves terminal QoS performance is provided from each link, comprise the change of code stream encapsulation, to the estimation of network delay and to the self adaptation adjustment of play buffer etc., these all bias toward theoretical derivation and analysis.Thereby for actual measurement, the result precision that this derivation analysis obtains is lower, and uses comparatively complicated.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method of testing that can comparatively accurately obtain the multimedia terminal audio frequency service quality performance of multimedia terminal internal audio frequency quality of service characteristics.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of method of testing of multimedia terminal audio frequency service quality performance may further comprise the steps:
Add the audio frequency service quality performance test module 1.1 send part at the pseudo-terminal audio frequency, and the test data set that the described pseudo-terminal audio frequency service quality performance test module of audio frequency process is obtained is divided into two-way, one the tunnel enters sound place computer, another route pseudo-terminal enters described sound place computer after sending to described multimedia terminal to be measured by network, makes described pseudo-terminal and described multimedia terminal to be measured by described network interaction at last;
1.2 current audio frequency is through forming current test data set behind the described pseudo-terminal, described sound place computer writes down very first time that described current test data set enters described sound place computer and described current test data set respectively and passes through second time that enters described sound place computer behind the described multimedia terminal;
1.3 judge the quality of service characteristics of described multimedia terminal audio frequency according to the described very first time and described second time, if will continue test, then get back to step 1.2, otherwise finish test.
In the such scheme, described test data set is burst delayed test data set.
In the such scheme, described test data set is vibration delayed test data set.
In the such scheme, described test data set is for postponing the saltus step test data set.
In the such scheme, described test data set is the step delay test data set.
In the such scheme, described audio frequency service quality performance test module comprises delay, shake and packet loss module.
In the such scheme, described sound place computer is to realize time of the real time transport protocol bag by writing down described test data set to the record of the described very first time and described second time.
In the such scheme, described pseudo-terminal and described multimedia terminal to be measured are connected on same hub or the switch.
In the such scheme, described audio frequency is by source of sound computer or the output of described pseudo-terminal.
In the such scheme, described audio frequency is not for consuming the form of disposal ability substantially.
Beneficial effect of the present invention mainly shows: technical scheme provided by the invention can comparatively accurately obtain the audio QoS characteristic of inside, multimedia terminal in conjunction with suitable test data set, and can roughly infer the QoS algorithm of terminal.
Description of drawings
Fig. 1 is that schematic diagram is disposed in the test of one embodiment of the invention;
Fig. 2 is the burst delayed test data set performance plot of one embodiment of the invention;
Fig. 3 is the vibration delayed test data set performance plot of one embodiment of the invention;
Fig. 4 postpones the schematic diagram that the saltus step test data set is measured the play buffering maximum capacity for one embodiment of the invention utilization;
Fig. 5 is the step delay test data set performance plot of one embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1, a kind of method of testing of multimedia terminal audio frequency service quality performance, at first send part at the pseudo-terminal audio frequency and add the audio frequency service quality performance test module, it comprises delay, shake and packet loss module, to simulate the situation that real network may run into; And audio frequency is divided into two-way through the test data set that pseudo-terminal audio frequency service quality performance test module obtains, and one the tunnel directly enters sound place computer, and another route pseudo-terminal enters sound place computer after sending to multimedia terminal to be measured by network.Like this, the delay of the two-way audio of gathering on the computer of sound place has just comprised multimedia terminal to be measured processing delay to audio frequency.Wherein, audio frequency is a ready audio material on source of sound computer or pseudo-terminal, and its pretreated one-tenth G711 etc. does not consume the form of disposal ability substantially; Pseudo-terminal and source of sound computer can be same physical computer, and pseudo-terminal and multimedia terminal to be measured then are connected on same hub or the switch to minimize the influence of network delay to test result.After finishing test and disposing, make pseudo-terminal and multimedia terminal to be measured by described network interaction and enter test process.
In test process, current audio frequency is through forming current test data set behind the described pseudo-terminal, the mode of time of sound place computer by record RTP (Real-time Transport Protocol, real time transport protocol) bag writes down current test data set respectively and enters second time that very first time of sound place computer and current test data set enter sound place computer after through the multimedia terminal; At last, sound place computer is judged the quality of service characteristics of described multimedia terminal audio frequency according to the described very first time and described second time.So far, this EOT then will test each device reset and repeat above-mentioned test process in the deployment if will continue test.
Below in conjunction with accompanying drawing audio frequency is described by the test data set that pseudo-terminal obtains, among Fig. 2, Fig. 3, Fig. 4, abscissa is a data point, ordinate is the time, No. 2 curves are data point actual play time curve, No. 3 curves are the theoretical reproduction time curve of data point, and No. 1 curve is No. 2 and plays the change curve of delay with the represented data point of No. 3 curves.
1, burst delayed test data set
Burst delayed test data set promptly has the test data set that postpones peak value, and postponing on a point increases suddenly, descends fast then.This test data set makes that receiving equipment is that multimedia terminal to be measured can not receive the RTP bag suddenly, is the bag that much is close to then, can test the multimedia terminal to postponing the adaptability of sudden change.As can be seen from Figure 2, because the existence that burst postpones, the terminal plays buffering area is not imported bag in a period of time, and originally the bag of buffer memory consumes gradually, if burst postpones big to surpassing the buffering area cache-time, just can from the waveform of Fig. 5, measure the buffer memory ability of buffering area.
2, vibration delayed test data set
It is not the unconformable aspect of good QoS algorithm that vibration postpones to expose some designs.As can be seen from Figure 3,, play algorithm, can cause the deterioration of performance, thereby can test out the robustness of some Adaptive QoS algorithms for some play buffer because input audio data has added a vibration.
3, step delay test data set
Voice data generally is not easy to estimate in the buffering of play buffer during this period of time.If the test data set with the slow stepping of a delay increases postpones in buffer capacity and will be absorbed, but near the buffering area ability, because the effect of Discarded Packets compensation just follows the buffering area ability the most approaching the time of delay of this moment.As can be seen from Figure 5, along with the input audio frequency delay progressively increases, final when the audio frequency input delay is near the buffering area ability, it is discontinuous that the output waveform of play buffer can become.This test set has more effectively been measured the QoS ability of play buffering than burst delayed test collection.
4, postpone the saltus step test data set
The another kind of method of measuring the play buffering maximum capacity is to utilize to postpone the saltus step test data set.The play buffer of supposing multimedia terminal to be measured is no more than 80ms, then utilizes the delay saltus step test data set of a 200ms to test.Because the delay of a 200ms, after the bag of buffering finishes playing, multimedia terminal to be measured can start Discarded Packets compensation, audio frequency diminishes gradually, after new RTP bag arrived, part can be dropped then, and the meeting of remainder in buffering range play immediately, from starting Discarded Packets compensation to the voice playing that postpones, we can infer this time from the waveform of playing so.As shown in Figure 4, W1 is an original waveform, and W2 is the Discarded Packets compensation waveform, W3 is an output waveform, and SW is for postponing step, and Te is that waveform is transmitted to the time of delay that the multimedia terminal plays back from producing to, be usually said mouth to the ear time, then play buffer maximum cushioning ability is the 200-Td millisecond.
Claims (10)
1, a kind of method of testing of multimedia terminal audio frequency service quality performance is characterized in that, may further comprise the steps:
Add the audio frequency service quality performance test module 1.1 send part at the pseudo-terminal audio frequency, and the test data set that the described pseudo-terminal audio frequency service quality performance test module of audio frequency process is obtained is divided into two-way, one the tunnel enters sound place computer, another route pseudo-terminal enters described sound place computer after sending to described multimedia terminal to be measured by network, makes described pseudo-terminal and described multimedia terminal to be measured by described network interaction at last;
1.2 current audio frequency is through forming current test data set behind the described pseudo-terminal, described sound place computer writes down very first time that described current test data set enters described sound place computer and described current test data set respectively and passes through second time that enters described sound place computer behind the described multimedia terminal;
1.3 judge the quality of service characteristics of described multimedia terminal audio frequency according to the described very first time and described second time, if will continue test, then get back to step 1.2, otherwise finish test.
2, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 1 is characterized in that: described test data set is burst delayed test data set.
3, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 1 is characterized in that: described test data set is vibration delayed test data set.
4, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 1 is characterized in that: described test data set is for postponing the saltus step test data set.
5, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 1 is characterized in that: described test data set is the step delay test data set.
6, as the method for testing of one of them described multimedia terminal audio frequency service quality performance of claim 2 to 5, it is characterized in that: described audio frequency service quality performance test module comprises delay, shake and packet loss module.
7, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 6 is characterized in that: described sound place computer is to realize time of the real time transport protocol bag by writing down described test data set to the record of the described very first time and described second time.
8, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 7 is characterized in that: described pseudo-terminal and described multimedia terminal to be measured are connected on same hub or the switch.
9, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 8 is characterized in that: described audio frequency is by source of sound computer or the output of described pseudo-terminal.
10, the method for testing of multimedia terminal audio frequency service quality performance as claimed in claim 9 is characterized in that: described audio frequency is not for consuming the form of disposal ability substantially.
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| CNB2007100744187A CN100488133C (en) | 2007-05-11 | 2007-05-11 | Method for detecting multimedia terminal audio frequency service quality performance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587349A (en) * | 2018-11-14 | 2019-04-05 | 平安科技（深圳）有限公司 | Multimedia is attended a banquet line testing process and device, electronic equipment, storage medium |
| CN112835759A (en) * | 2021-02-01 | 2021-05-25 | 百度在线网络技术（北京）有限公司 | Test data processing method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100542077C (en) * | 2003-05-26 | 2009-09-16 | 华为技术有限公司 | A kind of audio sync alignment method of testing |
| CN1802623B (en) * | 2003-06-13 | 2010-05-26 | 苹果公司 | Device and method for transmitting synchronous audio frequency and video frequency data |
| KR100608821B1 (en) * | 2004-07-22 | 2006-08-08 | 엘지전자 주식회사 | A method and a apparatus of measuring round trip delay time for mobile phone |
| CN100442858C (en) * | 2005-10-11 | 2008-12-10 | 华为技术有限公司 | Lip synchronous method for multimedia real-time transmission in packet network and apparatus thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587349A (en) * | 2018-11-14 | 2019-04-05 | 平安科技（深圳）有限公司 | Multimedia is attended a banquet line testing process and device, electronic equipment, storage medium |
| CN109587349B (en) * | 2018-11-14 | 2022-02-01 | 平安科技（深圳）有限公司 | Multimedia agent line testing method and device, electronic equipment and storage medium |
| CN112835759A (en) * | 2021-02-01 | 2021-05-25 | 百度在线网络技术（北京）有限公司 | Test data processing method and device, electronic equipment and storage medium |
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