CN201984810U - Testing equipment for objectively evaluating speech quality of pickup system - Google Patents
Testing equipment for objectively evaluating speech quality of pickup system Download PDFInfo
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- CN201984810U CN201984810U CN2011200595517U CN201120059551U CN201984810U CN 201984810 U CN201984810 U CN 201984810U CN 2011200595517 U CN2011200595517 U CN 2011200595517U CN 201120059551 U CN201120059551 U CN 201120059551U CN 201984810 U CN201984810 U CN 201984810U
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Abstract
The utility model provides testing equipment for objectively evaluating speech quality of a pickup system, which comprises a speech quality objective evaluating computer. The speech quality objective evaluating computer is provided with a sound card and an audio frequency collection interface of tested equipment. The testing equipment for objectively evaluating speech quality of the pickup system also comprises a playback sound box and a standard measurement microphone, the speech quality objective evaluating computer is also provided with a sound box interface and the audio frequency collection interface of the standard measurement microphone, the playback sound box is connected with the sound box interface, and the standard measurement microphone is connected with audio frequency collection interface of the standard measurement microphone. The testing equipment for objectively evaluating speech quality of the pickup system can be suitable for a speech quality test of a monitoring system containing operations of speech collection, transmission, treatment, and the like and other audio frequency treatment systems, and can obtain an objective and accurate evaluating result.
Description
Technical field
The utility model relates to a kind of testing apparatus of pickup system speech quality objective assessment.
Background technology
All the time, Voice Surveillance all is the important content of safety protection field, and Voice Surveillance is meant certain electronic technology equipment and the method for adopting, the process that the sound of monitored object is monitored.Audio select comprises wired monitoring and wireless monitor dual mode, wired monitoring is meant after the audio frequency acquiring signal, by finite medium transmission manner such as tone frequency channel wire, netting twines, wireless monitor is meant the mode of utilizing wireless telecommunications, the sound signal that collects is transmitted in electromagnetic mode, and carried out the mode of demodulate reception at receiving end.
The pickup system of an on-site monitoring has comprised following part: (1) sound picks up part, (2) transfer voice part, and (3) sound receives and the processing section.It mainly is the microphone that is used for sound collection that sound picks up part, the kind of microphone has a lot, from the transduction principle branch, can be divided into modes such as electrodynamic type, condenser type, piezoelectric type, divide from the directive property of microphone, can be divided into omni-directional, heart type, two-way type etc.Sound picks up part the acoustical signal of propagating in the air is converted into electric signal.Transfer voice partly is responsible for being converted into the transmission of sound signals of electric signal to receiving end, transmission mode can be by modes such as tone frequency channel wire, cable network, wireless networks, adopt the mode of Network Transmission, may also can comprise the compression encoding process of audio frequency at transmitting terminal.Sound receives and the processing section is used to receive the voice signal of hop, and handles accordingly, and handling procedure may comprise operations such as decoding, noise reduction, storage, analogue audio frequency output.
The performance of an Audio Monitoring System depends primarily on the quality of the voice that pickup system gathers.At present, be flooded with the various pickup systems that are used for Voice Surveillance on the market, yet, but also there are not corresponding apparatus or instrument that the voice quality of these pickup systems is carried out evaluation test.
The evaluation of voice quality can be divided into subjective assessment and objective evaluation dual mode.In the mode of subjective assessment, what application was maximum at present is Mean Opinion Score (MOS) rating method, this method obtains by a controlled test, in test, by playing one section clean undistorted voice signal, after the process pickup system picks up, allow lineup person go to listen at receiving end, provide the voice quality scoring that a 1-5 divides then, all experimenter persons' average mark, as the scoring of final voice quality, adopt the shortcoming of this method to be: consuming time, effort and having relatively high expectations to experimenter person.
Therefore, often adopt the method for speech quality objective assessment.Method for objectively evaluating commonly used has: perception speech quality measurement method (Perceptual Speech Quality Measure, be called for short PSQM), perception analysis photometry system method (Perceptual Analysis Measurement System, be called for short PAMS), perception speech quality Evaluation Method (Perceptual Evaluation of Speech Quality is called for short PESQ) etc.Wherein, PESQ is that industry is most widely used general, and thought measuring method the most accurately and reliably by consistent, according to (the International Telecommunication Union Telecommunication standardization Sector of International Telecommunications Union (ITU), abbreviation ITU-T) related experiment result, based on the voice quality of PESQ algorithm evaluation, reach 93.5% with the mean value of subjective assessment results relevance.The output valve of utilizing the voice quality result of PESQ algorithm measurement be one between [0.5 4.5] score value, score value is high more, illustrates that voice quality is good more.The detailed content of relevant PESQ algorithm can be with reference to P862, P862.1, P862.2, the P862.3 recommendation of ITU-T.
Based on the PESQ algorithm, method of testing and testing tool that some speech quality objective assessments are also arranged at present, yet, these method of testings and testing tool all are applied to communication speech mass measurement end to end, tester is tested the voice quality between the gateway end to end by simulative telephone interface, the shortcoming that exists is: can only be applied to the to have electrical interface voice system or the equipment of (such as gateway or analog audio interface), and can not be applied to the measurement of the pickup system of similar monitoring system.
The utility model content
The purpose of this utility model provides a kind of testing apparatus of pickup system speech quality objective assessment, with the speech quality objective assessment test of the pickup system that can be applied to on-site monitoring.
The testing apparatus of the pickup system speech quality objective assessment that the utility model provides, comprise the speech quality objective assessment computing machine, this speech quality objective assessment computer installation has sound card and is tried the audio collection interface of equipment, wherein, the testing apparatus of this pickup system speech quality objective assessment also comprises the playback audio amplifier, the canonical measure microphone, described speech quality objective assessment computing machine also is provided with the audio collection interface of speaker interface and canonical measure microphone, described playback audio amplifier connects described speaker interface, and described canonical measure microphone connects the audio collection interface of described canonical measure microphone.
The described audio collection interface that is tried equipment can be connected with the audio repeating head.
The testing apparatus of this pickup system speech quality objective assessment can also comprise and is used to adjust the amplifier of microphone that microphone is gathered the volume of sound.
The testing apparatus of this pickup system speech quality objective assessment goes for including the monitoring system of operations such as voice collecting, transmission, processing and the voice quality test of other audio frequency processing system, can access objective and accurate evaluation result.
Description of drawings
Fig. 1 is the structural representation of the testing apparatus of a kind of pickup system speech quality objective assessment of the present utility model.
Among the figure: 1-speech quality objective assessment computing machine, 2-speaker interface, 3-are tried the audio collection interface of equipment, the audio collection interface of 4-canonical measure microphone, 5-amplifier, 6-playback audio amplifier, 7-canonical measure microphone, 8-is tried the equipment microphone, and 9-is subjected to examination equipment.
Embodiment
As shown in Figure 1, the testing apparatus of this pickup system speech quality objective assessment comprises speech quality objective assessment computing machine 1, this speech quality objective assessment computing machine 1 is provided with the sound card (not shown) and is tried the audio collection interface 3 of equipment, wherein, the testing apparatus of this pickup system speech quality objective assessment also comprises playback audio amplifier 6, canonical measure microphone 7, described speech quality objective assessment computing machine also is provided with the audio collection interface 4 of speaker interface 2 and canonical measure microphone, described playback audio amplifier 6 connects described speaker interface 2, and described canonical measure microphone 4 connects the audio collection interface 4 of described canonical measure microphone.Described playback audio amplifier 6 is connected with amplifier 5.During use, be subjected to examination equipment 9 to connect the audio collection interface 3 of the equipment that tried, be subjected to examination equipment 9 to be connected with the equipment that the tried microphone 8 of collected sound signal.
The testing apparatus of this pickup system speech quality objective assessment can also comprise the audio repeating head, is connected to the described audio collection interface that is tried equipment.The audio repeating head is used for the connection between the various different audio interface, can be connected to the sound card of testing apparatus with the output signal of the testing apparatus that guarantees different interface type.The testing apparatus of this pickup system speech quality objective assessment can also comprise amplifier of microphone, is used to adjust the volume that microphone is gathered sound.
Further specify the principle of work and the using method of the testing apparatus of this pickup system speech quality objective assessment below.
The testing apparatus of this pickup system speech quality objective assessment is by playback audio amplifier playing standard tested speech sample, utilize the sound card collection to be tried the deterioration speech samples of the pickup system output of equipment simultaneously, then standard testing speech samples and deterioration speech samples are compared, obtain the voice quality scoring of deterioration speech samples.Before playing standard tested speech sample, in order to remedy owing to the playback audio amplifier and to test the influence of sound field to voice quality, this equipment can at first be measured the frequency response of playback audio amplifier and test sound field, and according to the suitable isostatic compensation wave filter of frequency response results design, be applied on the standard testing voice signal, thereby the influence to voice quality compensates with the test sound field to the playback audio amplifier.
Be example with concrete using below, introduce the use of the testing apparatus of this pickup system speech quality objective assessment:
Example: utilize testing apparatus among the present invention to measure the voice quality of certain monitoring system.The speech quality objective assessment computing machine is a personal computer that Windows XP is installed, the high-performance sound card is equipped with, monitor speaker, the canonical measure microphone, and amplifier of microphone, moved the speech quality objective assessment testing software based on the PESQ algorithm on the computing machine, measurement environment is in anechoic room, and testing procedure is as follows:
(1) standard microphone is placed on 100cm place, monitor speaker dead ahead, start the speech quality objective assessment testing software, the set handling pattern, the sampling rate parameter, and import system information to be measured, and start the player function of testing software audio frequency control module, make it to play the white Gaussian noise signal in the test sample book storehouse, with the sound pressure level of sound meter measurement standard microphone position, make sound pressure level near 79dB SPL.Play this white Gaussian noise signal once more, start the sound-recording function of evaluating software audio frequency control module simultaneously, utilize standard microphone collecting test signal;
(2) computing function of startup testing software audio processing modules is calculated the frequency response of measuring audio amplifier and test sound field, and is calculated corresponding isostatic compensation wave filter;
(3) computing function of startup testing software audio processing modules is to the isostatic compensation wave filter in the application of the standard testing speech samples in the test sample book storehouse (2);
(4) pick-up head with monitoring system to be tested is placed on the position same with the canonical measure microphone, the output signal of monitoring system is inserted the input channel of testing apparatus sound card, start the player function of testing software audio frequency control module, play isostatic compensation voice signal afterwards, start the sound-recording function of testing software audio frequency control module simultaneously, collection is tried the output voice of pickup system, as the deterioration speech samples;
(5) start testing software voice quality grading module,, and provide the voice quality objective scoring standard testing speech samples and corresponding deterioration speech samples;
(6), repeat (4), (5) operation to tested speech samples all in the test sample book storehouse;
(7) computing function of startup testing software audio processing modules, appraisal result to all test sample books is averaged, get rid of the influence of test sample book and speaker to the voice quality scoring, mean value is tried the voice quality final score of monitoring system as this, start the subscriber interface module of testing software, final voice quality objective scoring is shown to the user.
The above is a feasible embodiment of the present utility model; the utility model is not the voice quality test that only is confined to the pickup system of audio select yet; the equivalent structure that all utilization the utility model instructionss and accompanying drawing content are done changes or similar operations, is included within the protection domain of the present utility model.
Claims (2)
1. the testing apparatus of pickup system speech quality objective assessment, comprise the speech quality objective assessment computing machine, this speech quality objective assessment computer installation has sound card and is tried the audio collection interface of equipment, it is characterized in that, the testing apparatus of this pickup system speech quality objective assessment also comprises the playback audio amplifier, the canonical measure microphone, described speech quality objective assessment computing machine also is provided with the audio collection interface of speaker interface and canonical measure microphone, described playback audio amplifier connects described speaker interface, and described canonical measure microphone connects the audio collection interface of described canonical measure microphone.
2. the testing apparatus of pickup system speech quality objective assessment according to claim 1 is characterized in that, the described audio collection interface that is tried equipment is connected with the audio repeating head.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200595517U CN201984810U (en) | 2011-03-08 | 2011-03-08 | Testing equipment for objectively evaluating speech quality of pickup system |
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| CN2011200595517U CN201984810U (en) | 2011-03-08 | 2011-03-08 | Testing equipment for objectively evaluating speech quality of pickup system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105016A (en) * | 2013-04-01 | 2014-10-15 | 北京第七九七音响股份有限公司 | Device having recording and microphone test function and matched with intelligent terminal for usage |
| CN107221319A (en) * | 2017-05-16 | 2017-09-29 | 厦门盈趣科技股份有限公司 | A kind of speech recognition test system and method |
| CN107403629A (en) * | 2017-08-16 | 2017-11-28 | 歌尔股份有限公司 | Far field pickup method of evaluating performance and system, electronic equipment |
| CN108091349A (en) * | 2016-11-23 | 2018-05-29 | 成都鼎桥通信技术有限公司 | Voice quality detecting system, method and PESQ control terminals |
| CN109362015A (en) * | 2018-09-10 | 2019-02-19 | 广东小天才科技有限公司 | Volume test method, control end device, storage medium and volume test system |
| CN110390954A (en) * | 2019-08-06 | 2019-10-29 | 京东方科技集团股份有限公司 | Method and device for evaluating quality of voice product |
| CN111276161A (en) * | 2020-03-05 | 2020-06-12 | 公安部第三研究所 | Voice quality scoring system and method |
| CN111614842A (en) * | 2020-05-14 | 2020-09-01 | 杭州当虹科技股份有限公司 | PESQ-based objective voice communication quality evaluation method |
-
2011
- 2011-03-08 CN CN2011200595517U patent/CN201984810U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105016A (en) * | 2013-04-01 | 2014-10-15 | 北京第七九七音响股份有限公司 | Device having recording and microphone test function and matched with intelligent terminal for usage |
| CN104105016B (en) * | 2013-04-01 | 2017-09-22 | 北京第七九七音响股份有限公司 | Coordinate the device with recording and microphone test function that intelligent terminal is used |
| CN108091349A (en) * | 2016-11-23 | 2018-05-29 | 成都鼎桥通信技术有限公司 | Voice quality detecting system, method and PESQ control terminals |
| CN107221319A (en) * | 2017-05-16 | 2017-09-29 | 厦门盈趣科技股份有限公司 | A kind of speech recognition test system and method |
| CN107403629A (en) * | 2017-08-16 | 2017-11-28 | 歌尔股份有限公司 | Far field pickup method of evaluating performance and system, electronic equipment |
| CN107403629B (en) * | 2017-08-16 | 2020-10-09 | 歌尔股份有限公司 | Far-field pickup performance evaluation method and system, and electronic device |
| CN109362015A (en) * | 2018-09-10 | 2019-02-19 | 广东小天才科技有限公司 | Volume test method, control end device, storage medium and volume test system |
| CN109362015B (en) * | 2018-09-10 | 2021-06-22 | 广东小天才科技有限公司 | Volume test method, control end device, storage medium and volume test system |
| CN110390954A (en) * | 2019-08-06 | 2019-10-29 | 京东方科技集团股份有限公司 | Method and device for evaluating quality of voice product |
| CN111276161A (en) * | 2020-03-05 | 2020-06-12 | 公安部第三研究所 | Voice quality scoring system and method |
| CN111614842A (en) * | 2020-05-14 | 2020-09-01 | 杭州当虹科技股份有限公司 | PESQ-based objective voice communication quality evaluation method |
| CN111614842B (en) * | 2020-05-14 | 2021-10-26 | 杭州当虹科技股份有限公司 | PESQ-based objective voice communication quality evaluation method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20140308 |