CN101247622B - Testing method and device of audio communication system - Google Patents
Testing method and device of audio communication system Download PDFInfo
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- CN101247622B CN101247622B CN2008101012763A CN200810101276A CN101247622B CN 101247622 B CN101247622 B CN 101247622B CN 2008101012763 A CN2008101012763 A CN 2008101012763A CN 200810101276 A CN200810101276 A CN 200810101276A CN 101247622 B CN101247622 B CN 101247622B
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Abstract
The invention provides a test method and a device for an audio communication system, the audio communication system includes a first communication terminal and a second communication terminal, wherein, the method includes: first step, a first video signal pre-produced is imported into the first communication terminal under the condition that the first communication terminal is communicated with the second communication terminal; second step, frequency and/or amplitude of a second video signal are/is imported by the second communication terminal; third step, the frequency and/or the amplitude between the first video signal and the second video signal are/is compared with each other, and frequency different and amplitude different of both are judged whether to be in the range of pre-established inaccuracy or not, the audio communication system is decided to normally work if the difference is in the range of the pre-established inaccuracy; else, the video communication system is decided to work abnormally. The device includes: a signal import module, a signal export detection module and a comparison module. The invention can eliminate the inaccuracy of a subjective test in a prior art depended on man-made subjective feeling.
Description
Technical field
The present invention relates to the audio-frequency test field, particularly relate to a kind of method of testing and device of audio communication system.
Background technology
In the prior art, in general, the audio-frequency test of audio communication system such as multimedia communications system is to experience by people's the sense of hearing to realize, must rely on people's subjective feeling, has brought a lot of uncertain factors to make that also the result of test is objective inadequately to test like this.And, because what audio system to be measured was used is on-the-spot complicated various, the subjective testing of user experience formula is also always comprehensive inadequately, and this will cause the variation repeatedly of test result, the data that allow the people convince can't be provided after test is finished, also effectively suggestion can't be proposed the improvement of system.And the method for testing of prior art needs manually to test sound for a long time, both caused the manpower waste, and the result is also unreliable.Because test needs long-time, can not guarantee not leave or not tired the test period tester.These all produce not good influence to the result of test.
Summary of the invention
The method of testing and the device that the purpose of this invention is to provide a kind of audio communication system make the one sided technical problem of test result with the method for testing that solves prior art and device owing to the subjective feeling that must rely on the people.
To achieve these goals, the invention provides a kind of method of testing of audio communication system, described audio communication system comprises first communication terminal and second communication terminal, wherein, comprises the steps:
Step 1 under the situation of described first communication terminal and described second communication terminal mutual, is imported described first communication terminal with first audio signal of making in advance; Described first communication terminal is first coding audio signal of described input, and transfers to described second communication terminal; And described second communication terminal is second audio signal with described audio signal decoding from described first communication terminal, and output;
Step 3, the frequency and/or the amplitude of more described first audio signal and described second audio signal judge whether both difference on the frequencies and/or difference in magnitude are positioned at default error range; In this way, determine that then described audio communication system is working properly; Otherwise, determine described audio communication system operation irregularity.
Described method wherein, in the described step 1, after described first audio signal is imported described first communication terminal, also comprises:
Detect the frequency of described first audio signal and/or the step of amplitude.
Described method, wherein, described first audio signal is to have audio signal predeterminated frequency, that change by default rule.
Described method, wherein, described first audio signal is the constant amplitude sinusoid audio signal.
Described method, wherein, the frequency of described first audio signal is: 200HZ, 500HZ, 1KHZ, 2KHZ or 3.5KHZ.
Described method wherein, detects the frequency of described first audio signal and second audio signal by detecting time interval between described first audio signal and the second audio signal zero crossing.
The invention also discloses a kind of testing apparatus of audio communication system, described audio communication system comprises first communication terminal and second communication terminal, wherein, comprising:
Signal input module is used under the situation of described first communication terminal and described second communication terminal mutual, and first audio signal of making is in advance imported described first communication terminal; Described first audio signal transfers to described second communication terminal after described first communication terminal is encoded; Described audio signal from described first communication terminal is after described second communication decoding terminals is second audio signal, by described second communication terminal output;
The output signal detection module is used to detect the frequency and/or the amplitude of second audio signal of described sound second communication terminal output;
Comparison module is used for the frequency and/or the amplitude of more described first audio signal and described second audio signal, and when both difference on the frequency and/or difference in magnitude when being positioned at default error range, determines that described audio communication system is working properly; When both difference on the frequency and/or difference in magnitude when being positioned at outside the default error range, determine described audio communication system operation irregularity.
Described device wherein, also comprises:
The input signal detection module is used for detecting the frequency and/or the amplitude of described first audio signal after described first audio signal is imported described first communication terminal.
Described device, wherein, described first audio signal is to have audio signal predeterminated frequency, that change by default rule.
Described device, wherein, described first audio signal is the constant amplitude sinusoid audio signal.
Technique effect of the present invention is:
Technical scheme of the present invention provides a kind of method of testing and device of audio communication system, audio communication system as first communication terminal of input terminal and situation as the second communication terminal mutual of outlet terminal under, the frequency and/or the amplitude of the audio signal of the audio signal of the input by relatively importing first communication terminal and the output of second communication terminal, can test automatically the whether working properly of audio communication system, thereby, the deviation of the artificial subjective sensation that is relied in the time of can eliminating the subjective testing of prior art, can reflect audio system product quality present situation objectively, and can pass judgment on sound quality exactly, particularly confirm whether to occur in the equipment running process unusual;
In addition, utilize technical scheme of the present invention to detect the sound in the system communication process fully and effectively, and can simulate different sound frequencies easily by functional module such as software module, and the actual test environment that need not to build the user can be finished, and because test result has objectivity, fluctuation can not appear in test result, for the improvement of the sound reliability of audio system provides effective foundation.
Description of drawings
Fig. 1 is the Test Networking schematic diagram of the method for testing of one embodiment of the invention;
Fig. 2 is the schematic flow sheet of the method for testing of one embodiment of the invention;
Fig. 3 is in the method for testing of one embodiment of the invention, the waveform schematic diagram of a representational input sine wave audio-source of choosing;
Fig. 4 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, all normal audio signal oscillogram of the audio frequency of output and amplitude;
Fig. 5 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, the quiet unusual audio signal oscillogram of the appearance of output;
Fig. 6 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, the audio signal oscillogram that the appearance amplitude of output is unusual;
Fig. 7 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, unusual audio signal oscillogram all appears in the audio frequency of output and amplitude;
Fig. 8 is the structural representation of the testing apparatus of one embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 1 is in the method for testing of audio communication system of the embodiment of the invention, the schematic diagram of Test Networking.As Fig. 1, audio communication system 100 to be measured comprises: first communication terminal (first communication apparatus) 101 and second communication terminal (second communication apparatus) 102, wherein, test is to carry out under the situation of first communication terminal 101 and 102 intercommunications of second communication terminal.Exemplarily, can be point-to-point voice communication between first communication terminal 101 and the second communication terminal 102, also can be the voice communication that is undertaken by transmission network and/or local side communication equipment, and voice communication between the two can be wired or wireless.Exemplarily, this audio communication system can TV conference system, network television system (IPTV), or other can carry out the audio frequency or the multimedia communications system of voice communication; Correspondingly, above-mentioned communication terminal can be video conference terminal, set-top box or other audio communication terminal.Cloud atlas 103 expression among Fig. 1 between first communication terminal 101 and the second communication terminal 102 from the audio signal of first communication terminal, 101 outputs the local side apparatus of process and/or web-transporting device etc. be used to realize the equipment of voice communication between communication terminal.
In the method for testing of the embodiment of the invention, audio-source is from first communication terminal, 101 inputs of audio communication system 100, from second communication terminal 102 output of audio communication system 100, the frequency of the audio-source by input system relatively and the audio frequency of system's output and/or amplitude come the work of testing audio communication system normally whether; In preset range, determine then that audio communication system is working properly as both difference; Otherwise, determine the audio communication system operation irregularity.
Fig. 2 is the schematic flow sheet of the method for testing of one embodiment of the invention.As Fig. 2, the method for testing of one embodiment of the invention comprises the steps:
Exemplarily, after determining the audio communication system operation irregularity, can be further specifically determine it is which assembly or functional module in the system occurs unusual by other means such as log analysis.
In this embodiment, exemplarily, first communication terminal and second communication terminal can be provided with the audio coding decoding module, are used for the audio frequency of input is encoded or decoded.In such cases, first audio signal also comprises after importing first communication terminal: first communication terminal is to the step of first coding audio signal.And the audio signal transmission after first communication terminal is encoded it is to the second communication terminal, and the second communication terminal is decoded to the audio signal of this coding again, and exports second audio signal again after decoding.Obviously, except that encoding and decoding, first and second communication terminals also can carry out other processing to the audio signal of input, as processing such as amplification, reduction.Certainly, be opposite processing procedure as first communication terminal of input terminal with what carry out as the second communication terminal of outlet terminal.
In this embodiment, exemplarily, can generate by functional module such as software, for example, generate by using common sound recorder software as first audio signal of input audio signal.In addition, if know in advance, then need not to have detected by step 203 again in the frequency and the amplitude of first audio signal of producing.In this embodiment, representative frequency described in the step 201 can be: 200HZ, 500HZ, 1KHZ, 2KHZ or 3.5KHZ, certain selectable frequency is not limited thereto, can also select other frequency to be used for the detection of audio signal, for example can select any frequency among the frequency 20HZ～20KHZ of the sound that the people can hear.
In other embodiments of the invention, also can a comparison frequency or amplitude between the two; Perhaps, also can compare one of them parameter earlier, and then determine whether another parameter of comparison according to the result; Perhaps, also can compare other selected expression audio signal parameter of characteristic in a certain respect.
Fig. 3 is in the method for testing of one embodiment of the invention, and a representational input sine wave audio-source of choosing i.e. the waveform schematic diagram of first audio signal.Wherein, abscissa is the time, and unit is second (s), and ordinate is represented waveforms amplitude, and unit is a decibel (dB).Exemplarily, this input sine wave audio-source can utilize existing audio signal generation analysis tool to generate.
Fig. 4 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, all normal audio signal oscillogram of the audio frequency of output and amplitude.As Fig. 4, this output audio signal is all identical with the described input audio signal of Fig. 3 on amplitude and frequency, and promptly input audio signal is by behind the voice communication of audio communication system, and output signal does not take place unusually.
Fig. 5 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, the quiet unusual audio signal oscillogram of the appearance of output.As Fig. 5, amplitude by detecting this waveform and frequency and expection amplitude and frequency shown in Figure 3 are inconsistent, and differ greatly, and this audio volume control of decidable occurs unusual, thereby judges the audio communication system operation irregularity.And as Fig. 5, in system's running, occur one section quiet section of not having signal in the output waveform, can draw and have quiet unusual conclusion.
Fig. 6 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, the audio signal oscillogram that the appearance amplitude of output is unusual.As Fig. 6, it is bigger that amplitude by detecting this waveform and this audio volume control of the inconsistent decidable of expection amplitude shown in Figure 3 occur comparing difference in magnitude unusually, when this difference in magnitude is not positioned at default error range, the unusual conclusion of amplitude appears in the signal that can draw this output, thereby draws the conclusion of audio communication system operation irregularity.
Fig. 7 is when utilizing the method for one embodiment of the invention to test, import audio-source shown in Figure 3 after, unusual audio signal oscillogram all appears in the audio frequency of output and amplitude.As Fig. 7, amplitude by detecting this waveform and frequency and expection amplitude shown in Figure 3 and frequency is inconsistent and when both inconsistent is not in default scope, the amplitude of this audio volume control of decidable and frequency have all occurred unusually, thereby draw the conclusion of audio communication system operation irregularity.
The invention also discloses a kind of testing apparatus of audio communication system.Fig. 8 is the structural representation of the testing apparatus of one embodiment of the invention.As Fig. 8, the testing apparatus 800 of one embodiment of the invention comprises:
Output signal detection module 802 is used to detect the frequency and/or the amplitude of second audio signal of the second communication terminal output of described audio communication system, described first communication terminal and described second communication terminal mutual;
The testing apparatus of the embodiment of the invention also comprises:
The input signal detection module is used to detect the frequency and/or the amplitude of described first audio signal.
In the device of the embodiment of the invention, first audio signal is to have audio signal predeterminated frequency, that change by default rule; Exemplarily, the frequency of this audio signal can be 200HZ, 500HZ, 1KHZ, 2KHZ or 3.5KHZ.
In the device of the embodiment of the invention, described first audio signal is constant amplitude sinusoid audio signal, not constant amplitude sinusoid audio signal or square wave audio signal.
In the device of the embodiment of the invention, the output signal detection module can detect the frequency of described second audio signal by detecting time interval between the described second audio signal zero crossing; Similarly, the input signal detection module can detect the frequency of described first audio signal by detecting time interval between the described first audio signal zero crossing.
Technology side of the present invention is by judging whether audio communication system occurs at run duration unusually by preestablishing error range.
Utilize technical scheme of the present invention, can carry out integration test to the sound during the equipment operation, strike-machine test for a long time improves the confidence level of test result.
The present invention can be applicable in the automatic test of audio system such as multimedia communications system, is used to finish the automatic detection of sound.
In the specific implementation of the present invention, can simulate different sound frequency in the various environment easily by functional module such as software, and the actual test environment that need not to build the user can be finished, easy to use and saved the cost of test, and because test result has objectivity, fluctuation can not appear in test result, for the improvement of the sound reliability of audio system provides effective foundation.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the method for testing of an audio communication system, described audio communication system comprises first communication terminal and second communication terminal, it is characterized in that, comprises the steps:
Step 1 under the situation of described first communication terminal and described second communication terminal mutual, is imported described first communication terminal with first audio signal of making in advance; Described first communication terminal is first coding audio signal of described input, and transfers to described second communication terminal; And described second communication terminal is second audio signal with described audio signal decoding from described first communication terminal, and output;
Step 2 detects the frequency and/or the amplitude of second audio signal of described second communication terminal output;
Step 3, the frequency and/or the amplitude of more described first audio signal and described second audio signal judge whether both difference on the frequencies and/or difference in magnitude are positioned at default error range; In this way, determine that then described audio communication system is working properly; Otherwise, determine described audio communication system operation irregularity.
2. method according to claim 1 is characterized in that, in the described step 1, after described first audio signal is imported described first communication terminal, also comprises:
Detect the frequency of described first audio signal and/or the step of amplitude.
3. method according to claim 1 and 2 is characterized in that, described first audio signal is to have audio signal predeterminated frequency, that change by default rule.
4. method according to claim 3 is characterized in that, described first audio signal is the constant amplitude sinusoid audio signal.
5. method according to claim 4 is characterized in that, the frequency of described first audio signal is: 200HZ, 500HZ, 1KHZ, 2KHZ or 3.5KHZ.
6. method according to claim 5 is characterized in that, detects the frequency of described first audio signal and second audio signal by detecting time interval between described first audio signal and the second audio signal zero crossing.
7. the testing apparatus of an audio communication system, described audio communication system comprises first communication terminal and second communication terminal, it is characterized in that, comprising:
Signal input module is used under the situation of described first communication terminal and described second communication terminal mutual, and first audio signal of making is in advance imported described first communication terminal; Described first audio signal transfers to described second communication terminal after described first communication terminal is encoded; Described audio signal from described first communication terminal is after described second communication decoding terminals is second audio signal, by described second communication terminal output;
The output signal detection module is used to detect the frequency and/or the amplitude of second audio signal of described second communication terminal output;
Comparison module is used for the frequency and/or the amplitude of more described first audio signal and described second audio signal, and when both difference on the frequency and/or difference in magnitude when being positioned at default error range, determines that described audio communication system is working properly; When both difference on the frequency and/or difference in magnitude when being positioned at outside the default error range, determine described audio communication system operation irregularity.
8. device according to claim 7 is characterized in that, also comprises:
The input signal detection module is used for detecting the frequency and/or the amplitude of described first audio signal after described first audio signal is imported described first communication terminal.
9. according to claim 7 or 8 described devices, it is characterized in that described first audio signal is to have audio signal predeterminated frequency, that change by default rule.
10. device according to claim 9 is characterized in that, described first audio signal is the constant amplitude sinusoid audio signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109617635A (en) * | 2018-12-21 | 2019-04-12 | 贵州航天计量测试技术研究所 | A kind of wireless communication system co-channel interference test device and method |
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| TWI475870B (en) * | 2012-09-12 | 2015-03-01 | Wistron Corp | Testing apparatus and method for telephone apparatus |
| CN103546653B (en) * | 2013-10-23 | 2015-09-23 | 福建联迪商用设备有限公司 | The audio communication method of automatic identification optimal communication parameter and VOCA voice communications assembly |
| CN105306685B (en) * | 2015-09-18 | 2019-03-01 | 维沃移动通信有限公司 | The test method and mobile terminal of signal quality |
| CN105450882B (en) * | 2015-11-13 | 2018-07-20 | 公安部第三研究所 | A kind of audio conversion characteristic test method |
| CN106534980B (en) * | 2016-11-15 | 2019-12-06 | 广州华多网络科技有限公司 | abnormity detection method of audio processing system, log recording method and device |
| CN111261191A (en) * | 2019-11-22 | 2020-06-09 | 惠州市德赛西威智能交通技术研究院有限公司 | Automatic detection method and system for sound splicing and soundless of vehicle-mounted multimedia system |
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