CN105788611A - Audio quality online monitoring system - Google Patents
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
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- 238000004458 analytical method Methods 0.000 claims abstract description 53
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims description 9
- 238000007405 data analysis Methods 0.000 claims description 4
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- 230000004807 localization Effects 0.000 description 2
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
- G10L25/60—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination for measuring the quality of voice signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
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Abstract
The invention discloses an audio quality online monitoring system. The system comprises a plurality of local management platforms and a concentrated management platform, wherein each local management platform comprises a management terminal, an audio signal generation unit, an audio signal distribution unit and an audio signal analysis unit. According to the invention, test instructions are emitted through the management terminals, test signals are generated through the audio signal generation units, corresponding audio signals are generated when audio equipment to be tested is triggered, the audio signal distribution units obtain the audio signals from the local audio equipment to be tested and send the audio signals to the audio signal analysis units, correlation data of audio quality of the local audio equipment to be tested is obtained by analyzing the audio signals, and the data is sent to the management terminals for display and is uploaded to the concentrated management terminal through an IP network, such that online monitoring of the audio quality of all meeting place audio equipment of a video conference is realized, the audio quality problem of the meeting place audio equipment is discovered timely, and it is ensured that the video conference is carried out smoothly.
Description
Technical field
The present invention relates to video conferencing system technical field, particularly relate to a kind of audio quality on-line monitoring system.
Background technology
Along with tide and the trend of economic globalization, and the fast development of network technology, video conferencing system is increasingly widely applied, and wherein, audio frequency apparatus is as the important component part of video conference, and its audio quality is most important.Owing to audio frequency apparatus adopts two-way communication, and amplify through video conference device audio mixing and meeting room sound amplifier, very easily produce acoustic feedback, cause echo, the audio frequency fault such as utter long and high-pitched sounds, therefore usually require that special meeting room is set up in each meeting-place of video conference, it is equipped with the sound amplifier of specialty, but many basic units meeting-place can not meet this requirement, and sound amplifier model is different, indicator difference is big, parameter is arranged does not have unified standard criterion, cause that voice call quality is uneven, therefore every time need audio frequency apparatus is evaluated and tested before video conference, to ensure being smoothed out of meeting.
The evaluation and test of traditional audio frequency apparatus adopts professional audio analyser, sound amplifier is carried out testing performance index item by item, meets under the premise of requirement in single device performance indications, the whole audio system working condition of subjective evaluation.But this evaluation and test means have following defects that 1, TCH test channel is limited, it is impossible to once test whole audio system.2, off-line type test, it is impossible to on-line measurement.3, the test data of different audio frequency apparatuses cannot collect comprehensive assessment.
Summary of the invention
For above-mentioned technical problem, it is an object of the invention to provide a kind of audio quality on-line monitoring system, the audio quality of video conference all meeting-place audio frequency apparatus can be carried out on-line monitoring, obtain the related data of audio quality, and data are analyzed, find the audio-quality problems that meeting-place audio frequency apparatus exists in time, thus ensureing being smoothed out of video conference.
For reaching this purpose, the present invention by the following technical solutions:
A kind of audio quality on-line monitoring system, including several local management platforms and a centralized management platform, several local management platforms described carry out communication respectively through IP network with centralized management platform, described local management platform completes the data analysis of local audio devices, quality monitoring, pre-stored voice signal fusing, and local monitor result is uploaded to centralized management platform, described centralized management platform shows, inquires about the monitored results of each local management platform；
Described local management platform specifically includes management terminal, audio signal generation unit, audio signal allocation units and audio signal analysis unit, wherein:
Described management terminal electrically connects with audio signal analysis unit, for sending test instruction, test data and display local audio quality related data to local device；
Described audio signal generation unit electrically connects with audio signal analysis unit, for the test instruction sent by audio signal analysis unit receiving management terminal, and sends to local audio frequency apparatus to be measured according to different test instructions and correspondingly tests signal；
Described audio signal allocation units electrically connect with audio frequency apparatus to be measured and audio signal analysis unit, are used for getting involved local audio frequency apparatus to be measured, obtain audio frequency apparatus to be measured signal after tested and trigger and the audio signal that produces, and send it to audio signal analysis unit；
Described audio signal analysis unit is electrically connected with centralized Control platform by IP network, for audio signal is analyzed, obtain the related data of local audio frequency apparatus audio quality to be measured, and send it to management terminal and display, and be uploaded to centralized management platform by IP network.
Especially, described centralized management platform includes Central Management Server and client computer.
Especially, described audio signal generation unit adopts wired or wireless mode to be connected with audio frequency apparatus to be measured.
Especially, described audio signal generation unit includes audio signal generator and test loudspeaker.
Especially, described audio signal allocation units include HD Audio isolator.
The audio quality on-line monitoring system that the present invention proposes, management terminal sends test instruction, test signal is generated through audio signal generation unit, trigger audio frequency apparatus to be measured and produce correspondingly audio signal, audio signal allocation units get involved local audio frequency apparatus to be measured, obtain audio signal, and send it to audio signal analysis unit, audio signal is analyzed, obtain the related data of local audio frequency apparatus audio quality to be measured, and send it to management terminal display, and it is uploaded to centralized management platform by IP network, thus realizing the audio quality of video conference all meeting-place audio frequency apparatus is carried out on-line monitoring, find the audio-quality problems that meeting-place audio frequency apparatus exists in time, thus ensureing being smoothed out of video conference.
Accompanying drawing explanation
Fig. 1 is the audio quality on-line monitoring system structured flowchart that the embodiment of the present invention provides.
Fig. 2 is the audio signal generation unit theory diagram that the embodiment of the present invention provides.
Fig. 3 is the audio signal allocation units theory diagram that the embodiment of the present invention provides.
Fig. 4 is the audio signal analysis unit theory diagram that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.It is understood that specific embodiment described herein is used only for explaining the present invention, but not limitation of the invention.It also should be noted that, for the ease of describing, illustrate only part related to the present invention in accompanying drawing but not full content, unless otherwise defined, all of technology used herein is identical with the implication that the those skilled in the art belonging to the present invention are generally understood that with scientific terminology.The term used in the description of the invention herein is intended merely to the purpose describing specific embodiment, it is not intended that in the restriction present invention.Term as used herein " and/or " include the arbitrary and all of combination of one or more relevant Listed Items.
Refer to shown in Fig. 1, Fig. 1 is the audio quality on-line monitoring system structured flowchart that the embodiment of the present invention provides.
The present embodiment sound intermediate frequency quality online monitoring system specifically includes: several local management platforms and a centralized management platform, and several local management platforms described carry out communication respectively through IP network with centralized management platform.
Each local management platform specifically includes management terminal, audio signal generation unit, audio signal allocation units and audio signal analysis unit.
Described local management platform specifically includes management terminal, audio signal generation unit, audio signal allocation units and audio signal analysis unit, wherein:
Described management terminal electrically connects with audio signal analysis unit, send test instruction by audio signal analysis unit to audio signal generation unit, audio signal graphic software platform can also be completed simultaneously, analyze procedure graph and show, audio detection result graphic software platform, the inquiry of historical data and weight analysis procedure graph shows, the establishment of local audio monitoring plan, the graphical configuration management of local audio devices index parameter model and local audio detection equipment graphically managing.This management terminal supports every historical data and fault warning record queries.System supports original audio record data weight analysis, helps attendant's labor assessment public address multiplying arrangement operation conditions；Support the classification analysis to historical data, particularly fault data, it is provided that all kinds of analytical data charts, for instance: the analysis diagram such as block diagram, pie chart.
Described audio signal generation unit electrically connects with audio signal analysis unit, by the test instruction that audio signal analysis unit receiving management terminal sends, and sends to local audio frequency apparatus to be measured according to different test instructions and correspondingly tests signal.Simultaneously, described audio signal generation unit adopts Ethernet or 433MHz wireless mode to be connected with audio frequency apparatus to be measured, when treating survey audio frequency apparatus and carrying out on-line monitoring, management terminal sends test instruction by audio signal analysis unit to audio signal generation unit, operating audio signal generation unit produces the test benchmark signal of test frequency coverage 20Hz ~ 20kHz, these test signals enter tested sound amplifier after passing through microphone and the pickup of other audio input interfaces in meeting-place.Described audio signal generation unit can produce the 8 quasi-single frequency point signal of road sign and double-tone inter-modulated signal and 8 tunnel users customize audio frequency, exports sound signal, tests for microphone.Described audio signal generation unit is mainly made up of audio signal generator and test loudspeaker.The control instruction that audio signal generator sends according to audio signal analysis unit, sends specific testing audio.This test tone frequency division two class, one is test single-frequency point audio frequency, and two is chant music.Control to start/stop to play by control instruction.SD card can be taken out renewal chant music by user.Audio signal generator produces the standard source of sound test signal of different frequency according to different control instructions.Whole audio signal generation unit completes the communication with audio process by wireless data sending interface, it is achieved the instruction intercommunication of two unit and data interaction.This audio signal generation unit can connect 8 test loudspeakers.User can control audio signal generator sequentially or simultaneously sounding.Adopt sleeve and tested microphone to be directly connected to mode during test, send the sound particular sound source as tested microphone with test loudspeaker.Utilize sleeve connection mode can reduce meeting live audio signal to echo and the interference of the signal impact on measuring sound source between microphone.
Refer to shown in Fig. 2, Fig. 2 is the audio signal generation unit theory diagram that the embodiment of the present invention provides.
Wherein, low noise power-supply system is customization power output apparatus, in order to ensure stability and the performance indications of audio signal generation unit, the requirement of power supply is higher, so adopting the main power source system customized, the performance requirement of this power-supply system is low ripple, high output stability, and low noise power-supply system provides generating positive and negative voltage for each board.
Owing to adopting digitized mode to produce the audio signal of standard, therefore adopting high-precision crystal oscillator, this crystal oscillator selects clock to be 12.288MHz ± 2ppm.
The data of digital audio and video signals and the order of each controller all will arrive each board through high speed data transfer base plate, bus transfer mechanism transmission according to different standards respectively, different STD bus transmission mechanisms ensure that the accuracy of data, guarantee that the signal produced and control signal are stablized errorless, bus includes I2C, I2S, SPI etc..
Wireless digital transmission communication card mainly realizes the wireless command transmission between audio signal analysis unit and audio signal generation unit and works in coordination with reference signal generation card generation standard digital audio frequency signal.It is wirelessly transferred part and adopts 433MHz Radio Transmission Technology, it is ensured that the long-distance transmissions of signal is to adapt to different applied environments.Radio communication adopts efficient circulation intertexture Error Correction of Coding, and capacity of resisting disturbance and sensitivity are all well ensured.The digital signal processing chip on the card digital standard audio signal writing generation 24bit by program, so can make the error that the digital audio and video signals obtained produces be reduced to the minimum dynamic range that also simultaneously ensure that when audio signal is reduced.
Reference signal occurs the central authorities that card is whole audio signal generation unit to control and the digital audio and video signals of generation standard worked in coordination with by wireless data sending card.The normal operation of reference signal each board of generation card control, configures the parameters of each board the wired data communication part of responsible audio signal generation unit, wired employing 100M network communication mode, it is ensured that the quick transmission of data command.
The multipath output signals of LNA kilocalorie reduction audio signal and driving high-fidelity.Adopt the digital standard audio signal of 96Khz sample rate reductase 12 4.Adopting 1.3nV/ √ Hz low noise amplifier to drive multiple-channel output, and be aided with low noise power management chip and realize the high-quality electric power system of amplifier, the PSRR of power supply is up to 82dB, and output voltage noise is 4 μ VRMS.
Described audio signal allocation units electrically connect with audio frequency apparatus to be measured and audio signal analysis unit, are used for getting involved local audio frequency apparatus to be measured, obtain audio frequency apparatus to be measured signal after tested and trigger and the audio signal that produces, and send it to audio signal analysis unit.Described audio signal allocation units adopt passive mode to get involved tested audio frequency apparatus, the audio signal that undistorted acquisition audio frequency apparatus to be measured signal after tested triggers and produces.
Refer to shown in Fig. 3, Fig. 3 is the audio signal allocation units theory diagram that the embodiment of the present invention provides.
Signal distribution unit is that the signal various signal sources exported carries out two-way distribution, adopts the HD Audio isolator isolation signals more than 80dB, it is ensured that audio signal is without compression, without delay, undistorted distribution output.Wherein, rfpa output signal, as detection signal, directly arrives each demand signals terminal without rfpa output signal.Signal distribution unit can access in system under test (SUT) for a long time, even if detection system off-duty, signal distribution unit has any impact without to original link and signal.
Described audio signal analysis unit is electrically connected with centralized Control platform by IP network, for audio signal is analyzed, obtain the related data of local audio frequency apparatus audio quality to be measured, and send it to management terminal and display, and be uploaded to centralized management platform by IP network.
The built-in multi-channel high-speed data acquisition module of audio signal analysis unit, can implement synchronous high-speed collection, Real-time Collection audio signal to the audio signal of 32 passages at most.The audio signal of maximum 32 passages can also be carried out index test.Index test project specifically includes: instantaneous frequency, instantaneous level, Signal-to-Noise-and-distortion ratio, signal to noise ratio, total harmonic distortion, harmonic distortion, intermodulation distortion, Signal segregation degree, frequency response, noise level and dynamic range.Audio signal for each channel acquisition, audio signal analysis unit is analyzed by respective algorithms, obtain the Various types of data such as real-time audio-frequency index data, audio frequency fault data and audio frequency characteristics parameter, and carry out data with the assessment models pre-set and compare, when there is deviation in analytical data, audio signal analysis unit is by notifying terminal management software or centralized management platform, and prompting operator carry out fault verification in time.Audio signal analysis unit also can store all kinds of analytical data, for the later stage, Monitoring Data is reevaluated analysis.Vary for tested audio frequency apparatus kind, required parser is also different, audio signal analysis unit described in the present embodiment has the assessment models localization design function of all kinds of audio frequency apparatus, can pass through to edit combination and form the assessment models of different audio frequency apparatus, simplify the evaluation process of audio frequency apparatus, support assessment models localization design, for the feature of local meeting-place sound amplifier, different assessment models can be worked out.Such as: microphone assessment models, sound console assessment models etc..Meanwhile, described audio signal analysis unit can also carry out speech quality evaluation, by the real-time comparison to online audio signal, it is thus achieved that the speech quality evaluation numerical value of respective channel.Meanwhile, described audio signal analysis unit can also complete to interrupt, utter long and high-pitched sounds, audio signal abnormality detection and the alarm such as echo and non-speech noise.Meanwhile, described audio signal analysis unit can also record the audio frequency characteristics of designated person, it is provided that the exemplary audio data of feature personage, the convenient audio frequency apparatus parameter that resets in strange land, and the output tonequality of the different meeting-place feature personage of guarantee is stable.Meanwhile, described audio signal analysis unit also supports every historical data and fault warning record queries and original audio record data weight analysis, helps attendant's labor assessment audio frequency apparatus operation conditions.
The version of audio signal analysis unit is made up of the standard PC case of 19 inches of 4U of a standard, and cabinet adopts enclosed construction, and external interface is that XRL plug connects, and whole cabinet may be installed on the standard rack of 19 inches.
The instruction of audio signal analysis unit receiving management, complete audio signal generation unit and the instruction of self are controlled, can realize the synchronous acquisition of 32 road signals, FFT signal processing, audio analysis, breakdown judge, and the amplitude spectrum signal after can audio volume control signal and FFT being processed in real time sends aobvious control terminal to and displays, audio process also completes the storage of audio analysis data and breakdown judge result and the real-time recording of tested passage simultaneously.
Refer to shown in Fig. 4, Fig. 4 is the audio signal analysis unit theory diagram that the embodiment of the present invention provides.
Wherein, simultaneous data-acquisition is based on digital signal acquiring processing scheme, and front end adopts 24bit192k sample mode to realize the Real-time Collection to 32 tunnel audio signals and data algorithm processes.And it is equipped with the high-capacity and high-speed storage chip realization synchronization process to huge data volume, transfer data to data process machine by data transmission interface and make data analysis.
Data process machine adopts the central processing unit that operational capability is powerful that the data that capture card transmission comes up carry out the real-time secondary algorithm analysis of 32 road signals, obtain the purpose of indices performance measurement, refer to software algorithm part, and utilize wireless data sending card that audio signal generation unit is carried out controlled in wireless, by wired mode, result data is supplied to terminal management software to display, allows user see the result of data analysis intuitively.
Described centralized management platform includes Central Management Server and client computer, shows, inquires about the monitored results of each local management platform.
The audio signal analysis unit in described each meeting-place of centralized management platform centered management, by obtaining monitoring information in real time, user can synchronize to obtain audio frequency apparatus running quality assessment in each meeting-place in whole video conference network, organize and implement the whole network audio frequency apparatus translocation also by this platform, it is thus possible to more fully assess audio signal transmission quality in a network simultaneously.Meanwhile, described centralized management platform can also carry out full mesh topology management, rights management, alarm management, configuration management and other webmaster.Meanwhile, described centralized management platform remote access can also check the fault record data of each sub-venue audio frequency apparatus, can point out each from the running status of equipment in networking state.Meanwhile, the real time data of all right non-volatile recording video conference of described centralized management platform, and support the inquiry of historical data and weight analysis.
Technical scheme sends test instruction by managing terminal, test signal is generated through audio signal generation unit, trigger audio frequency apparatus to be measured and produce correspondingly audio signal, audio signal allocation units get involved local audio frequency apparatus to be measured, obtain audio signal, and send it to audio signal analysis unit, audio signal is analyzed, obtain the related data of local audio frequency apparatus audio quality to be measured, and send it to management terminal display, and it is uploaded to centralized management platform by IP network, thus realizing the audio quality of video conference all meeting-place audio frequency apparatus is carried out on-line monitoring, find the audio-quality problems that meeting-place audio frequency apparatus exists in time, thus ensureing being smoothed out of video conference.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention being described in further detail by above example, but the present invention is not limited only to above example, when without departing from present inventive concept, other Equivalent embodiments more can also be included, and the scope of the present invention is determined by appended right.
Claims (5)
1. an audio quality on-line monitoring system, it is characterized in that, including several local management platforms and a centralized management platform, several local management platforms described carry out communication respectively through IP network with centralized management platform, described local management platform completes the data analysis of local audio devices, quality monitoring, pre-stored voice signal fusing, and local monitor result is uploaded to centralized management platform, described centralized management platform shows, inquires about the monitored results of each local management platform；
Described local management platform specifically includes management terminal, audio signal generation unit, audio signal allocation units and audio signal analysis unit, wherein:
Described management terminal electrically connects with audio signal analysis unit, for sending test instruction, test data and display local audio quality related data to local device；
Described audio signal generation unit electrically connects with audio signal analysis unit, for the test instruction sent by audio signal analysis unit receiving management terminal, and sends to local audio frequency apparatus to be measured according to different test instructions and correspondingly tests signal；
Described audio signal allocation units electrically connect with audio frequency apparatus to be measured and audio signal analysis unit, are used for getting involved local audio frequency apparatus to be measured, obtain audio frequency apparatus to be measured signal after tested and trigger and the audio signal that produces, and send it to audio signal analysis unit；
Described audio signal analysis unit is electrically connected with centralized Control platform by IP network, for audio signal is analyzed, obtain the related data of local audio frequency apparatus audio quality to be measured, and send it to management terminal and display, and be uploaded to centralized management platform by IP network.
2. audio quality on-line monitoring system according to claim 1, it is characterised in that described centralized management platform includes Central Management Server and client computer.
3. audio quality on-line monitoring system according to claim 1, it is characterised in that described audio signal generation unit adopts wired or wireless mode to be connected with audio frequency apparatus to be measured.
4. audio quality on-line monitoring system according to claim 1, it is characterised in that described audio signal generation unit includes audio signal generator and test loudspeaker.
5. audio quality on-line monitoring system according to claim 1, it is characterised in that described audio signal allocation units include HD Audio isolator.
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| CN107317719A (en) * | 2017-08-17 | 2017-11-03 | 英锐科技(深圳)有限公司 | Audio frequency apparatus remote monitoring system |
| CN108566612A (en) * | 2018-06-29 | 2018-09-21 | 青岛海信电器股份有限公司 | A kind of loud speaker detection method, terminal device and computer storage media |
| CN109525921A (en) * | 2018-12-26 | 2019-03-26 | 合肥凯捷技术有限公司 | A kind of inter-network interconnected audio big data acquisition analysis system |
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| CN106782610A (en) * | 2016-11-15 | 2017-05-31 | 福建星网智慧科技股份有限公司 | A kind of acoustical testing method of audio conferencing |
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| US11677879B2 (en) * | 2017-09-29 | 2023-06-13 | Dolby Laboratories Licensing Corporation | Howl detection in conference systems |
| CN108566612A (en) * | 2018-06-29 | 2018-09-21 | 青岛海信电器股份有限公司 | A kind of loud speaker detection method, terminal device and computer storage media |
| CN108566612B (en) * | 2018-06-29 | 2020-09-25 | 海信视像科技股份有限公司 | Loudspeaker detection method, terminal equipment and computer storage medium |
| CN109525921A (en) * | 2018-12-26 | 2019-03-26 | 合肥凯捷技术有限公司 | A kind of inter-network interconnected audio big data acquisition analysis system |
| CN110060700A (en) * | 2019-03-12 | 2019-07-26 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Short sequence audio analysis method based on parametric spectral estimation |
| CN110060700B (en) * | 2019-03-12 | 2021-07-30 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Short sequence audio analysis method based on parameter spectrum estimation |
| CN110096612A (en) * | 2019-05-06 | 2019-08-06 | 苏州思必驰信息科技有限公司 | The acquisition methods and system of the online audio analysis data of voice log |
| CN112802497A (en) * | 2021-01-29 | 2021-05-14 | 深圳市捷视飞通科技股份有限公司 | Audio quality detection method and device, computer equipment and storage medium |
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