技术领域technical field
本发明涉及通讯语音质量分析技术领域，具体地，涉及一种通信设备语音质量评价测试系统及测试方法。The invention relates to the technical field of communication voice quality analysis, in particular to a communication equipment voice quality evaluation testing system and testing method.
背景技术Background technique
语音质量的评价，可以分为主观评价和客观评价两种方式。一种是主观方法，这种方法是选择多个用户来听取经过网络传递后的一段音频采样，并对其给出一个评价分数，这被称为MOS(MeanOpinionScore)评价，5表示最好的质量，而1表示最低质量。采用这种方法的缺点是：耗时、费力、且对受试人员的要求较高。Voice quality evaluation can be divided into two ways: subjective evaluation and objective evaluation. One is a subjective method. This method is to select multiple users to listen to a section of audio samples passed through the network and give them an evaluation score. This is called MOS (MeanOpinionScore) evaluation, and 5 represents the best quality. , while 1 is the lowest quality. The disadvantages of using this method are: time-consuming, labor-intensive, and high requirements for the subjects.
考虑到听力测试的主观方法要求选择多个用户来进行测试，开销比较大，研究者提出了客观的评价方法。目前比较典型的客观评价方法有三种，分别是PESQ、3SQM和E模型。PESQ方法中，发送方发送一个参考的音频采样，测试系统把经过网络传输后的音频采样与原始的音频采样进行比较，通过一个模拟人耳听觉的感知模型来给出一个相应的MOS值来估计用户感知的VoIP质量。考虑到音频分组的延迟抖动情况，PESQ算法引入时间对齐机制。PESQ算法比较复杂，而且要求发送参考信号，这使得其不适合用于实时的语音评价。有关PESQ算法的详细内容，可以参考ITU-T的P862、P862.1、P862.2、P862.3建议书。Considering that the subjective method of listening test requires multiple users to be selected for testing, and the cost is relatively high, the researchers proposed an objective evaluation method. At present, there are three typical objective evaluation methods, namely PESQ, 3SQM and E model. In the PESQ method, the sender sends a reference audio sample, and the test system compares the audio sample transmitted through the network with the original audio sample, and uses a perception model that simulates the human ear to give a corresponding MOS value to estimate. User perceived VoIP quality. Considering the delay jitter of audio packets, the PESQ algorithm introduces a time alignment mechanism. The PESQ algorithm is complex and requires sending reference signals, which makes it unsuitable for real-time speech evaluation. For details about the PESQ algorithm, refer to the P862, P862.1, P862.2, and P862.3 recommendations of the ITU-T.
E模型最早是为了帮助电信工程师进行传输规划而设计的，但也可用于语音呼叫的质量评价。该模型考虑音频在传输的发送端、信道和接收端进行传输时的各种因素对于用户感知的语音质量的影响，把各种因素加在一起形成一个传输质量评价因子R，最后再根据R因子来给出相应的MOS值。The E-model was originally designed to help telecommunications engineers in transmission planning, but it can also be used for quality evaluation of voice calls. This model considers the impact of various factors on the voice quality perceived by users when audio is transmitted at the sending end, channel, and receiving end of the transmission, and adds various factors together to form a transmission quality evaluation factor R, and finally according to the R factor To give the corresponding MOS value.
在通信设备及其组成的通信系统的使用过程中，通话音频质量的检测一直是重要内容，但传统的音频检测更多采用人工检测，是采用主观的评价方法。目前也有一些语音质量客观评价的测试方法和测试仪器，然而这些测试方法和测试仪器大部分是应用于端到端的数字通信语音质量测量的，比如VOIP系统，对于模拟信道上的语音数据，无法准确记录语音的发送的开始和结束时间，则无法记录评分。另一方面，单独选择一条语音样本进行评分有局限性，如果多条样本顺序测试更能准确表现语音的损伤特性，在不改变通信设备的现有通信模式下，没有单独信道可以传递语音样本号码，现有的测试设备无法实现多条语音的测试。基于E模型的测试设备是针对电话语音质量的评测，参数的选择与数据和电台语音的评测也并不匹配，另外此类设备也无法实现准实时的语音质量评价。During the use of communication equipment and the communication system composed of it, the detection of call audio quality has always been an important content, but traditional audio detection is mostly manual detection, which is a subjective evaluation method. At present, there are also some test methods and test instruments for objective evaluation of voice quality. However, most of these test methods and test instruments are applied to end-to-end digital communication voice quality measurement, such as VOIP systems, which cannot accurately measure voice data on analog channels. Recording the start and end time of voice transmission, the score cannot be recorded. On the other hand, there are limitations in selecting a single voice sample for scoring. If the sequential test of multiple samples can more accurately represent the impairment characteristics of the voice, there is no separate channel to transmit the voice sample number without changing the existing communication mode of the communication device. , the existing test equipment cannot realize the test of multiple voices. The test equipment based on the E model is aimed at the evaluation of telephone voice quality, and the selection of parameters does not match the evaluation of data and radio voice. In addition, such equipment cannot achieve quasi-real-time voice quality evaluation.
发明内容Contents of the invention
针对现有技术中的缺陷，本发明的目的是提供一种通信设备语音质量评价测试系统及测试方法。Aiming at the defects in the prior art, the purpose of the present invention is to provide a communication equipment voice quality evaluation testing system and testing method.
根据本发明的一个方面，提供一种通信设备语音质量评价测试系统，其特征是，包括上位机、前导音频发送接收模块、前导音频控制模块、语音评价核心处理模块和受测电台，所述前导音频发送接收模块、前导音频控制模块、语音评价核心处理模块组成评测设备，所述上位机通过上位机连接接口连接至所述语音评价核心处理模块，所述前导音频控制模块通过所述前导音频发送接收模块连接至所述语音评价核心处理模块，所述前导音频控制模块与所述语音评价核心处理模块通过音频输出接口共同连接至所述受测电台，所述受测电台通过音频采集接口反馈连接至所述前导音频控制模块与所述语音评价核心处理模块。According to one aspect of the present invention, a communication device voice quality evaluation test system is provided, which is characterized in that it includes a host computer, a leading audio transmission and receiving module, a leading audio control module, a voice evaluation core processing module and a station under test, the leading An audio sending and receiving module, a leading audio control module, and a voice evaluation core processing module form an evaluation device, and the host computer is connected to the voice evaluation core processing module through a host computer connection interface, and the leading audio control module transmits the voice through the leading audio The receiving module is connected to the speech evaluation core processing module, the leading audio control module and the speech evaluation core processing module are jointly connected to the station under test through an audio output interface, and the station under test is connected through an audio collection interface feedback To the leading audio control module and the speech evaluation core processing module.
优选地，所述语音评价核心处理模块包括内置标准语音库，发送前导码功能模块，接收前导码功能模块，语音评测算法模块，定位功能模块，系统本底噪声补偿模块，所述发送前导码功能模块和接收前导码功能模块用于连接所述前导音频发送接收模块。Preferably, the speech evaluation core processing module includes a built-in standard speech library, a function module for sending a preamble, a function module for receiving a preamble, a speech evaluation algorithm module, a positioning function module, a system noise floor compensation module, and the function module for sending a preamble The module and the receiving preamble function module are used to connect the preamble audio sending and receiving module.
优选地，所述测试系统还包括放大器或衰减器，所述放大器或衰减器连接于所述音频采集接口与所述前导音频控制模块和语音评价核心处理模块之间。Preferably, the test system further includes an amplifier or an attenuator, and the amplifier or attenuator is connected between the audio collection interface and the leading audio control module and the speech evaluation core processing module.
优选地，其特征在于，所述音频采集接口连接有转接头。Preferably, it is characterized in that the audio collection interface is connected with an adapter.
优选地，所述受测电台分别连接两个所述评测设备。Preferably, the station under test is respectively connected to two evaluation devices.
根据本发明的另一方面，提供一种上述通信设备语音质量评价测试系统的测试方法，其特征是，包括如下步骤：According to another aspect of the present invention, there is provided a test method of the above-mentioned communication equipment voice quality evaluation test system, which is characterized in that it includes the following steps:
(1)所述上位机通过上位机连接接口给所述语音评价核心处理模块发送测试指令；(1) the host computer sends test instructions to the speech evaluation core processing module through the host computer connection interface;
(2)所述语音评价核心处理模块发送音频前导码至所述前导音频发送接收模块；(2) The voice evaluation core processing module sends an audio preamble to the leading audio sending and receiving module;
(3)所述语音评价核心处理模块发送标准测试语音到音频输出口；(3) the speech evaluation core processing module sends the standard test speech to the audio output port;
(4)所述受测电台接收远程语音的前导码以及所述音频输出口传送过来的标准测试语音；(4) The station under test receives the preamble of the remote voice and the standard test voice transmitted by the audio output port;
(5)所述受测电台从所述远程语音前导码中分离出语音控制信息；(5) The station under test separates the voice control information from the remote voice preamble;
(6)所述受测电台通过所述音频采集口进行录音；(6) The station under test records through the audio collection port;
(7)所述语音评价核心模块对录制语音进行编辑后使其对齐标准语音；(7) the voice evaluation core module makes it align with the standard voice after editing the recorded voice;
(8)通过语间评测方法对录制语音时行评测。(8) Evaluate the recorded speech time by the interlingual evaluation method.
优选地，所述第(8)步中的评测方法为PESQ、PSQM、PSQM+中的一种或多种。Preferably, the evaluation method in the step (8) is one or more of PESQ, PSQM, and PSQM+.
与现有技术相比，本发明具有如下的有益效果：Compared with the prior art, the present invention has the following beneficial effects:
适用于电台等通信设备标准的语音的产生、接收以及语音质量测试，能够得到客观准确的评价结果，测试方法可以支持自环近端测试以及双卡远端测试，以能够应用于现场对通信设备及其组成的通信系统信道语音质量客观评价测试。It is suitable for voice generation, reception and voice quality testing of communication equipment standards such as radio stations, and can obtain objective and accurate evaluation results. The test method can support self-loop near-end testing and dual-card remote testing, so that it can be applied to on-site communication equipment And the objective evaluation test of channel voice quality of the communication system composed of it.
附图说明Description of drawings
通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显：Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
图1为本发明的结构示意框图；Fig. 1 is a structural schematic block diagram of the present invention;
图2为一个上位机对应一个受测电台的实照示意图；Figure 2 is a schematic diagram of a host computer corresponding to a radio station under test;
图3为两个上位机对应一个受测电台的实照示意图。Fig. 3 is a schematic diagram of a real photo of two host computers corresponding to a radio station under test.
图中：1为语音评价模块与上位机的接口，2为受测电台音频输出接口，3为受测电台的音频采集接口，4为放大器，5为前导音频发送接收模块，6为前导音频控制模块，7为语音评价核心处理模块，8为上位机，9为受测电台，10为评测设备。In the figure: 1 is the interface between the voice evaluation module and the host computer, 2 is the audio output interface of the station under test, 3 is the audio collection interface of the station under test, 4 is the amplifier, 5 is the leading audio sending and receiving module, and 6 is the leading audio control module, 7 is the voice evaluation core processing module, 8 is the host computer, 9 is the radio station under test, and 10 is the evaluation equipment.
具体实施方式detailed description
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明，但不以任何形式限制本发明。应当指出的是，对本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进。这些都属于本发明的保护范围。The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
通信设备语音质量评价测试系统包括上位机、前导音频发送接收模块、前导音频控制模块、语音评价核心处理模块和受测电台。所述语音评价核心处理模块包括内置标准语音库，发送前导码功能模块，接收前导码功能模块，语音评测算法模块，定位功能模块，系统本底噪声补偿模块。The voice quality evaluation test system for communication equipment includes a host computer, a leading audio sending and receiving module, a leading audio control module, a voice evaluation core processing module and a radio station under test. The speech evaluation core processing module includes a built-in standard speech library, a function module for sending preambles, a function module for receiving preambles, a speech evaluation algorithm module, a positioning function module, and a system noise floor compensation module.
所述前导音频发送接收模块、前导音频控制模块、语音评价核心处理模块组成评测设备，所述上位机通过上位机连接接口连接至所述语音评价核心处理模块的所述发送前导码功能模块和接收前导码功能模块，所述前导音频控制模块通过所述前导音频发送接收模块连接至所述语音评价核心处理模块，所述前导音频控制模块与所述语音评价核心处理模块通过音频输出接口共同连接至所述受测电台，所述受测电台通过音频采集接口反馈连接至所述前导音频控制模块与所述语音评价核心处理模块。The leading audio transmission and receiving module, the leading audio control module, and the speech evaluation core processing module form an evaluation device, and the host computer is connected to the sending preamble function module and the receiving function module of the speech evaluation core processing module through the host computer connection interface. A preamble function module, the preamble audio control module is connected to the speech evaluation core processing module through the preamble audio sending and receiving module, and the preamble audio control module and the speech evaluation core processing module are jointly connected to the The station under test is feedback-connected to the leading audio control module and the speech evaluation core processing module through an audio collection interface.
音频采集接口与所述前导音频控制模块和语音评价核心处理模块之间连接放大器或衰减器。所述音频采集接口连接有转接头。An amplifier or an attenuator is connected between the audio collection interface and the leading audio control module and the speech evaluation core processing module. The audio collection interface is connected with an adapter.
在对两个设备同时进行评测时，受测电台分别连接两个所述评测设备进行同时评测。When evaluating two devices at the same time, the radio station under test is respectively connected to the two evaluation devices for simultaneous evaluation.
通信设备语音质量评价测试系统的测试方法包括如下步骤：The test method of the communication equipment voice quality evaluation test system comprises the following steps:
(1)所述上位机通过上位机连接接口给所述语音评价核心处理模块发送测试指令；(1) the host computer sends test instructions to the speech evaluation core processing module through the host computer connection interface;
(2)所述语音评价核心处理模块发送音频前导码至所述前导音频发送接收模块；(2) The voice evaluation core processing module sends an audio preamble to the leading audio sending and receiving module;
(3)所述语音评价核心处理模块发送标准测试语音到音频输出口；(3) the speech evaluation core processing module sends the standard test speech to the audio output port;
(4)所述受测电台接收远程语音的前导码以及所述音频输出口传送过来的标准测试语音；(4) The station under test receives the preamble of the remote voice and the standard test voice transmitted by the audio output port;
(5)所述受测电台从所述远程语音前导码中分离出语音控制信息；(5) The station under test separates the voice control information from the remote voice preamble;
(6)所述受测电台通过所述音频采集口进行录音；(6) The station under test records through the audio collection port;
(7)所述语音评价核心模块对录制语音进行编辑后使其对齐标准语音；(7) the voice evaluation core module makes it align with the standard voice after editing the recorded voice;
(8)通过语间评测方法对录制语音时行评测，评测方法为PESQ(主观语音质量评估)PESQ、PSQM、PSQM+中的一种或多种。(8) Evaluate the recorded speech time by an interlingual evaluation method, and the evaluation method is one or more of PESQ (subjective speech quality evaluation) PESQ, PSQM, and PSQM+.
如图1所示，该通信设备语音质量客观评价的评测设备10包括与上位机8的接口1，与受测电台相互连接的音频输出接口2，与受测电台9相连的音频采集接口3，有可能实现的内接放大器4，前导音频发送接收模块5，以及前导音频控制模块6，和语音评价核心处理模块7，其中模块5和6，或者模块6与7物理上可能为一个模块。该设备有可能包含整个装置的屏蔽盒。As shown in Figure 1, the evaluation equipment 10 of the objective evaluation of the voice quality of the communication equipment includes an interface 1 with a host computer 8, an audio output interface 2 connected with the station under test, an audio collection interface 3 connected with the station under test 9, It is possible to realize the built-in amplifier 4, the leading audio sending and receiving module 5, the leading audio control module 6, and the speech evaluation core processing module 7, wherein modules 5 and 6, or modules 6 and 7 may be physically a module. The equipment may contain a shielded box for the entire installation.
该通信设备语音质量客观评价的评测设备还可以包括音频转接头，连接到所述受测电台的音频采集接口。音频转接头用于各种不同音频接口之间的连接，以保证不同接口类型的评测设备的输出信号能够连接到评测设备的声卡。该通信设备语音质量客观评价的评测设备还可以包括前置衰减器或放大器，用于调整音频采集声音的音量，适应不同通信设备的输入。The evaluation device for objectively evaluating the voice quality of the communication device may also include an audio adapter connected to the audio collection interface of the station under test. The audio adapter is used for connection between various audio interfaces, so as to ensure that the output signals of the evaluation equipment with different interface types can be connected to the sound card of the evaluation equipment. The evaluation device for objectively evaluating the voice quality of the communication device may also include a pre-attenuator or an amplifier, which is used to adjust the volume of the audio collection sound to adapt to the input of different communication devices.
下面进一步说明本发明的工作原理和使用方法。The working principle and usage method of the present invention will be further described below.
参见附图2，一个上位机8通过评测设备10对一个受测电台9进行测试。参见附图3，可以能过两个上位机8通过两个各自的评测设备10对一个受测电台9进行测试，提高效率。Referring to FIG. 2 , a host computer 8 tests a radio station 9 under test through an evaluation device 10 . Referring to FIG. 3 , it is possible to test a radio station 9 under test through two host computers 8 through two respective evaluation devices 10 to improve efficiency.
参见附图1，上位机通过与该设备的接口，发送指令，指示该设备发送测试语音，该设备首先发送音频前导码，成功之后发送标准测试语音到音频输出口，音频前导码和标准音频通过测试信道，接收模块负责接收远程语音的前导码，从信息中分离出语音记录序号等控制信息，并激发录音程序，录音结束可能因为约定的时间如8s或者收到后续的音频结束码而中止。录音结束后，语音评价核心模块可能对录制语音进行裁减，以对齐标准语音，之后调用语音评测算法，比如PESQ，对受损语音和原始语音进行比较，并给出受损语音的评分。为了弥补整个系统对于通信设备语音质量的影响，该设备可以根据标准语音以及标准受损语音在直连情况下(不经过通信设备)的受损情况，设计适当的补偿算法，应用到通过通信设备的损伤测试结果上，从而本设备对通信设备语音质量的影响进行了补偿。Referring to Figure 1, the host computer sends instructions through the interface with the device to instruct the device to send a test voice. The device first sends the audio preamble, and then sends the standard test voice to the audio output port after success. The audio preamble and the standard audio pass. To test the channel, the receiving module is responsible for receiving the preamble of the remote voice, separating the control information such as the voice recording serial number from the information, and initiating the recording program. The end of the recording may be terminated due to the agreed time such as 8s or the receipt of the subsequent audio end code. After the recording is over, the voice evaluation core module may cut the recorded voice to align with the standard voice, and then call a voice evaluation algorithm, such as PESQ, to compare the damaged voice with the original voice, and give a score for the damaged voice. In order to compensate for the impact of the entire system on the voice quality of the communication device, the device can design an appropriate compensation algorithm based on the damage of the standard voice and the standard damaged voice in the case of direct connection (without passing through the communication device), and apply it to the communication device Based on the damage test results, the device compensates for the influence of the voice quality of the communication device.
下面以具体的使用为例，介绍该通信设备语音质量客观评价的评测设备的使用：The following is an example of specific use to introduce the use of the evaluation equipment for the objective evaluation of the voice quality of the communication equipment:
例1：利用本发明中的评测设备测量某监听系统的语音质量。语音质量客观评价设备的上位机是一台安装了Ubuntu14.04的个人计算机，该计算机通过串口与语音客观评价设备相互连接。该计算机安装了minicom或类似串口操作软件。Example 1: Utilize the evaluation equipment in the present invention to measure the voice quality of a monitoring system. The host computer of the voice quality objective evaluation equipment is a personal computer installed with Ubuntu 14.04, which is connected to the voice objective evaluation equipment through a serial port. The computer is installed with minicom or similar serial port operation software.
本发明的音频采集接口电台的音频输出端，音频输出端接电台的音频输入端。按需可能需要使用转接头，衰减器或者放大器。测试步骤如下：The audio output end of the audio collection interface radio station of the present invention is connected to the audio input end of the radio station. Adapters, attenuators or amplifiers may be used as needed. The test steps are as follows:
上位机使用minicom软件，利用AT+S+1指令指示语音评价设备发送第一条标准语音，语音评价模块发送FSK四位数字0001，代表之后发送标准语音1，之后发送标准语音1。The upper computer uses minicom software, and uses the AT+S+1 command to instruct the voice evaluation device to send the first standard voice, and the voice evaluation module sends the FSK four-digit number 0001, which means that the standard voice 1 will be sent later, and then the standard voice 1 will be sent.
发送的前导语音通过电台系统，到达评价设备的音频输入端，前导码解析功能解析出数字指令0001，同时启动录音程序。如标准语音1的音长是8s，录音程序录制10秒。The sent preamble voice passes through the radio system and reaches the audio input terminal of the evaluation equipment. The preamble analysis function parses out the digital command 0001 and starts the recording program at the same time. For example, the sound length of standard voice 1 is 8s, and the recording program records for 10 seconds.
录制结束后，语音评价模块对录制语音进行精确对准，删除前面由于播放语音和录制语音开关打开时产生的冲击噪音。After the recording is finished, the voice evaluation module precisely aligns the recorded voice, and deletes the impact noise generated when the playback voice and the recording voice switch are turned on.
语音评价核心模块调用客观语音评价算法，如PESQ对被测受损语音进行打分，并根据补偿算法，对标准测结果进行补偿，得到最终的语音质量评价结果。The voice evaluation core module invokes an objective voice evaluation algorithm, such as PESQ, to score the tested damaged voice, and compensates the standard test results according to the compensation algorithm to obtain the final voice quality evaluation result.
上位机可以在minicom直接观察到语音质量评价结果，也可以通过AT+GET+RESULT获得最新的测试结果。The host computer can directly observe the voice quality evaluation results in minicom, and can also obtain the latest test results through AT+GET+RESULT.
例2:远端测试部署使用示例Example 2: Example of remote test deployment
一个通信设备语音质量客观评价设备的音频采集接口接电台的音频输出端，另一个通信设备语音质量客观评价设备音频输出端接电台的音频输入端。电台之间按通信设备的实际连接方式。按需使用转接头，衰减器或者放大器。两台上位机分别连接两个通信设备语音质量客观评价模块。The audio collection interface of the voice quality objective evaluation device of one communication device is connected to the audio output end of the radio station, and the audio output end of the voice quality objective evaluation device of the other communication device is connected to the audio input end of the radio station. According to the actual connection mode of communication equipment between stations. Use adapters, attenuators or amplifiers as needed. The two host computers are respectively connected to two communication equipment voice quality objective evaluation modules.
评测发送和接收步骤同示例1.The evaluation sending and receiving steps are the same as Example 1.
以上对本发明的具体实施例进行了描述。需要理解的是，本发明并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本发明的实质内容。Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention.
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| CN201510885860.2ACN105529037A (en) | 2015-12-04 | 2015-12-04 | Communication equipment voice quality evaluation testing system and testing method |
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