WO2020238702A1 - Method for testing power amplifier - Google Patents

Method for testing power amplifier Download PDF

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Publication number
WO2020238702A1
WO2020238702A1 PCT/CN2020/091113 CN2020091113W WO2020238702A1 WO 2020238702 A1 WO2020238702 A1 WO 2020238702A1 CN 2020091113 W CN2020091113 W CN 2020091113W WO 2020238702 A1 WO2020238702 A1 WO 2020238702A1
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test
device under
under test
control terminal
channel signal
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PCT/CN2020/091113
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French (fr)
Chinese (zh)
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张坤
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晶晨半导体(上海)股份有限公司
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Publication of WO2020238702A1 publication Critical patent/WO2020238702A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers

Definitions

  • the invention relates to the field of hardware testing, in particular to a testing method of a power amplifier.
  • a test method aimed at effectively detecting whether the voice recognition of the intelligent voice system is normal and detecting a high-efficiency power amplifier is provided.
  • a test method for a power amplifier is connected to a control terminal and a test terminal respectively, the control terminal is connected to the test terminal; the control terminal controls the test terminal to test the device under test;
  • the test method includes the following steps:
  • the control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, if yes, execute step S2; if not, execute step S7;
  • the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, if yes, execute step S3; if not, execute step S7;
  • the control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, if yes, execute step S4; if not, execute step S7;
  • the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, if yes, execute step S5; if not, execute step S7;
  • the control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, if yes, execute step S6; if not, execute step S7;
  • the device under test and the test terminal are connected in a Bluetooth mode
  • the control terminal is used to send audio to the device under test to control the device under test to output audio signals;
  • the control terminal is also used to control the test terminal to test the device under test.
  • the control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, including:
  • the control terminal performs a sound channel test on the device under test through the test terminal.
  • the control terminal controls the device under test to play audio with a first preset frequency and adjusts the output volume of the device under test to a volume threshold.
  • the test terminal collects the channel signal output by the device under test, and judges whether the channel signal meets the first preset condition;
  • the first preset condition includes:
  • the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, including:
  • the control terminal performs a total harmonic distortion plus noise test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a second preset frequency, and the test terminal collects the output of the device under test Channel signal, judging whether the channel signal meets the second preset condition;
  • the second preset condition includes: whether the decibel of the channel signal is within the first decibel threshold range.
  • control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, including:
  • the control terminal performs a crosstalk test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a third preset frequency, and the test terminal collects the channel signal output by the device under test and determines Whether the channel signal meets the third preset condition;
  • the third preset conditions include:
  • the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, including:
  • the control terminal performs an amplitude-frequency response test of the device under test through the test terminal, the control terminal controls the device under test to play audio with a fourth preset frequency, and the test terminal collects the channel signal output by the device under test , Judge whether the channel signal meets the fourth preset condition;
  • the fourth preset conditions include:
  • the control terminal performs phase difference and level difference tests on the device under test through the test terminal, the control terminal controls the device under test to play audio with a fifth preset frequency, and the test terminal collects the output of the device under test Channel signal, judge whether the channel signal meets the fifth preset condition;
  • the fifth preset conditions include:
  • phase difference test whether the phase difference between the left channel and the right channel is within the preset difference range
  • the control terminal performs a noise ratio test on the device under test to identify whether the output channel signal meets the sixth preset condition, including:
  • the control terminal performs a noise ratio test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a sixth preset frequency, and the test terminal collects the channel signal output by the device under test, Determine whether the channel signal meets the sixth preset condition;
  • the sixth preset condition includes:
  • the end of generating the test result includes:
  • control terminal is used to control the test terminal to proceed sequentially according to the test rules to check whether the power amplifier of the device under test is normal, so as to guarantee the normal operation of the voice recognition function of the device under test, and quickly and accurately locate the device under test
  • the fault location of the equipment improves the detection effect.
  • Fig. 1 is a flowchart of an embodiment of the power amplifier testing method according to the present invention
  • Fig. 2 is a test block diagram of an embodiment of the power amplifier test method according to the present invention.
  • this application proposes an effective detection intelligence Whether the speech recognition of the speech system is normal or not, it is a test method to detect the high efficiency power amplifier.
  • the device under test 1 is connected to the control terminal 2 and the test terminal 3 respectively, and the control terminal 2 is connected to the test terminal 3; the control terminal 2 controls The test terminal 3 tests the device under test 1;
  • the device under test 1 and the test terminal 3 can be connected by Bluetooth;
  • the device under test 1 can be connected to the control terminal 2 through a data line or WIFI communication mode;
  • the control terminal 2 is also used to control the test terminal 3 to test the device under test 1.
  • the control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, if yes, execute step S2; if not, execute step S7;
  • step S1 includes:
  • the control terminal performs a sound channel test on the device under test through the test terminal.
  • the control terminal controls the device under test to play audio with a first preset frequency and adjusts the output volume of the device under test to a volume threshold.
  • the test terminal collects the channel signal output by the device under test, and judges whether the channel signal meets the first preset condition;
  • the channel signal includes a left channel signal and a right channel signal.
  • step S1 when the channel test is performed, the voltage values of the left channel and the right channel are judged separately; the power values of the left channel and the right channel are judged at the same time, if the left channel and the right channel have At least one that does not meet the threshold range is regarded as a test failure, and step S7 is executed.
  • the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, if yes, execute step S3; if not, execute step S7;
  • step S2 includes:
  • the second preset condition includes: whether the decibel of the channel signal is within the first decibel threshold range.
  • the control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, if yes, execute step S4; if not, execute step S7;
  • step S3 includes:
  • the control terminal performs a crosstalk test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a third preset frequency, and the test terminal collects the channel signal output by the device under test and determines Whether the channel signal meets the third preset condition;
  • the third preset conditions include:
  • the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, if yes, execute step S5; if not, execute step S7;
  • step S4 includes:
  • the fourth preset conditions include:
  • step S4 when the amplitude-frequency response test is performed, the maximum decibels of the left and right channels are judged separately; if at least one of the maximum decibels of the left and right channels does not meet the threshold range, the test is regarded as a failure Step S7 is executed.
  • the control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, if yes, execute step S6; if not, execute step S7;
  • step S5 includes:
  • the control terminal performs phase difference and level difference tests on the device under test through the test terminal, the control terminal controls the device under test to play audio with a fifth preset frequency, and the test terminal collects the output of the device under test Channel signal, judge whether the channel signal meets the fifth preset condition;
  • the fifth preset conditions include:
  • phase difference test whether the phase difference between the left channel and the right channel is within the preset difference range
  • step S5 if at least one of the phase difference test and the level difference test fails, it is deemed that the test has failed and step S7 is executed.
  • control terminal performs a noise ratio test on the device under test, identifies whether the output channel signal meets the sixth preset condition, and executes step S7;
  • step S6 includes:
  • the sixth preset condition includes:
  • the device under test can be a smart TV, a smart set-top box, a smart speaker and other electronic products that require voice control.
  • control terminal is used to control the test terminal to proceed sequentially according to the test rules to check whether the power amplifier of the device under test is normal, so as to provide guarantee for the normal operation of the voice recognition function of the device under test, which can quickly and accurately locate the device under test.
  • the fault location of the testing equipment improves the detection effect, avoids repeated debugging, saves time and cost, and avoids waste of resources.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

Disclosed is a method for testing a power amplifier, wherein same belongs to the field of hardware testing. In the present invention, a control end is used to control a test end to sequentially perform, according to a test rule, tests on a device to be tested, so as to check whether a power amplifier of the device to be tested is normal, thereby providing a guarantee for normal operation of a voice recognition function of the device to be tested, quickly and accurately locating a fault position of the device to be tested, and improving the detection effect.

Description

功放的测试方法Power amplifier test method 技术领域Technical field
本发明涉及硬件测试领域，尤其涉及一种功放的测试方法。The invention relates to the field of hardware testing, in particular to a testing method of a power amplifier.
背景技术Background technique
针对智能语音系统在软件正常的情况下，无法识别语音信号或语音识别准确性差的问题，检测人员耗费大量的人力、物力排查原因仍无法有效的快速的定位故障原因。Aiming at the problem that the intelligent voice system cannot recognize the voice signal or the voice recognition accuracy is poor when the software is normal, the inspectors spend a lot of manpower and material resources to investigate the cause and still cannot effectively and quickly locate the cause of the fault.
发明内容Summary of the invention
针对上述问题，现提供一种旨在可有效的检测智能语音系统语音识别是否正常，检测效率高的功放的测试方法。In view of the above-mentioned problems, a test method aimed at effectively detecting whether the voice recognition of the intelligent voice system is normal and detecting a high-efficiency power amplifier is provided.
一种功放的测试方法，待测设备分别与控制端和测试端连接，所述控制端与所述测试端连接；所述控制端控制所述测试端对所述待测设备进行测试；所述测试方法包括下述步骤：A test method for a power amplifier. A device to be tested is connected to a control terminal and a test terminal respectively, the control terminal is connected to the test terminal; the control terminal controls the test terminal to test the device under test; The test method includes the following steps:
S1.所述控制端对所述待测设备进行声道测试，判断输出的声道信号是否符合第一预设条件，若是，执行步骤S2；若否，执行步骤S7；S1. The control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, if yes, execute step S2; if not, execute step S7;
S2.所述控制端对所述待测设备进行总谐波失真加噪声测试，判断输出的声道信号是否符合第二预设条件，若是，执行步骤S3；若否，执行步骤S7；S2. The control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, if yes, execute step S3; if not, execute step S7;
S3.所述控制端对所述待测设备进行串扰测试，判断输出的声道信号是否符合第三预设条件，若是，执行步骤S4；若否，执行步骤S7；S3. The control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, if yes, execute step S4; if not, execute step S7;
S4.所述控制端对所述待测设备进行幅频响应测试，判断输出的声道信号 是否符合第四预设条件，若是，执行步骤S5；若否，执行步骤S7；S4. The control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, if yes, execute step S5; if not, execute step S7;
S5.所述控制端对所述待测设备进行相位差及电平差测试，判断输出的声道信号是否符合第五预设条件，若是，执行步骤S6；若否，执行步骤S7；S5. The control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, if yes, execute step S6; if not, execute step S7;
S6.所述控制端对所述待测设备进行噪声比测试，识别输出的声道信号是否符合第六预设条件，执行步骤S7；S6. The control terminal performs a noise ratio test on the device under test, identifies whether the output channel signal meets the sixth preset condition, and executes step S7;
S7.生成测试结果结束。S7. End of generating test results.
优选的，所述待测设备与所述测试端采用蓝牙方式连接；Preferably, the device under test and the test terminal are connected in a Bluetooth mode;
所述控制端用于向所述待测设备发送音频控制所述待测设备输出音频信号；The control terminal is used to send audio to the device under test to control the device under test to output audio signals;
所述控制端还用于控制所述测试端对所述待测设备进行测试。The control terminal is also used to control the test terminal to test the device under test.
优选的，所述步骤S1中，所述控制端对所述待测设备进行声道测试，判断输出的声道信号是否符合第一预设条件，包括：Preferably, in the step S1, the control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, including:
所述控制端通过测试端对待测设备进行声道测试，所述控制端控制所述待测设备播放第一预设频率的音频，并将所述待测设备输出音量调节至音量阈值，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第一预设条件；The control terminal performs a sound channel test on the device under test through the test terminal. The control terminal controls the device under test to play audio with a first preset frequency and adjusts the output volume of the device under test to a volume threshold. The test terminal collects the channel signal output by the device under test, and judges whether the channel signal meets the first preset condition;
所述第一预设条件包括：The first preset condition includes:
声道信号的电压值是否在电压阈值范围内；Whether the voltage value of the channel signal is within the voltage threshold range;
声道信号的功率是否在功率阈值范围内。Whether the power of the channel signal is within the power threshold.
优选的，所述步骤S2中，所述控制端对所述待测设备进行总谐波失真加噪声测试，判断输出的声道信号是否符合第二预设条件，包括：Preferably, in the step S2, the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, including:
所述控制端通过测试端对待测设备进行总谐波失真加噪声测试，所述控制端控制所述待测设备播放第二预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第二预设条件；The control terminal performs a total harmonic distortion plus noise test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a second preset frequency, and the test terminal collects the output of the device under test Channel signal, judging whether the channel signal meets the second preset condition;
第二预设条件包括：声道信号的分贝是否在第一分贝阈值范围内。The second preset condition includes: whether the decibel of the channel signal is within the first decibel threshold range.
优选的，所述步骤S3中，所述控制端对所述待测设备进行串扰测试，判 断输出的声道信号是否符合第三预设条件，包括：Preferably, in the step S3, the control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, including:
所述控制端通过测试端对待测设备进行串扰测试，所述控制端控制所述待测设备播放第三预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第三预设条件；The control terminal performs a crosstalk test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a third preset frequency, and the test terminal collects the channel signal output by the device under test and determines Whether the channel signal meets the third preset condition;
第三预设条件包括：The third preset conditions include:
左声道到右声道的分贝是否在第二分贝阈值范围内；Whether the decibel from the left channel to the right channel is within the second decibel threshold;
右声道到左声道的分贝是否在第三分贝阈值范围内。Whether the decibel from the right channel to the left channel is within the third decibel threshold.
优选的，所述步骤S4中，所述控制端对所述待测设备进行幅频响应测试，判断输出的声道信号是否符合第四预设条件，包括：Preferably, in the step S4, the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, including:
所述控制端通过测试端对待测设备进行幅频响应测试，所述控制端控制所述待测设备播放第四预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第四预设条件；The control terminal performs an amplitude-frequency response test of the device under test through the test terminal, the control terminal controls the device under test to play audio with a fourth preset frequency, and the test terminal collects the channel signal output by the device under test , Judge whether the channel signal meets the fourth preset condition;
第四预设条件包括：The fourth preset conditions include:
声道信号的最大分贝是否在第四分贝阈值范围内；Whether the maximum decibel of the channel signal is within the fourth decibel threshold;
声道信号的最小分贝是否在第五分贝阈值范围内。Whether the minimum decibel of the channel signal is within the fifth decibel threshold.
优选的，所述步骤S5中，所述控制端对所述待测设备进行相位差及电平差测试，判断输出的声道信号是否符合第五预设条件，包括：Preferably, in the step S5, the control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, including:
所述控制端通过测试端对待测设备进行相位差及电平差测试，所述控制端控制所述待测设备播放第五预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第五预设条件；The control terminal performs phase difference and level difference tests on the device under test through the test terminal, the control terminal controls the device under test to play audio with a fifth preset frequency, and the test terminal collects the output of the device under test Channel signal, judge whether the channel signal meets the fifth preset condition;
第五预设条件包括：The fifth preset conditions include:
在进行相位差测试时，左声道与右声道之间的相位差是否在预设差值范围内；During the phase difference test, whether the phase difference between the left channel and the right channel is within the preset difference range;
在进行电平差测试时，左声道与右声道之间的分贝差是否在第六分贝阈值范围内。During the level difference test, whether the decibel difference between the left channel and the right channel is within the sixth decibel threshold.
优选的，所述步骤S6中，所述控制端对所述待测设备进行噪声比测试， 识别输出的声道信号是否符合第六预设条件，包括：Preferably, in the step S6, the control terminal performs a noise ratio test on the device under test to identify whether the output channel signal meets the sixth preset condition, including:
所述控制端通过测试端对待测设备进行噪声比测试，所述控制端控制所述待测设备播放第六预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第六预设条件；The control terminal performs a noise ratio test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a sixth preset frequency, and the test terminal collects the channel signal output by the device under test, Determine whether the channel signal meets the sixth preset condition;
第六预设条件包括：The sixth preset condition includes:
左声道的噪声分贝是否在预设第一噪声分贝范围；Whether the noise decibel of the left channel is within the preset first noise decibel range;
左声道的噪声比是否在预设第一噪声比范围；Whether the noise ratio of the left channel is within the preset first noise ratio range;
右声道的噪声分贝是否在预设第二噪声分贝范围；Whether the noise decibel of the right channel is within the preset second noise decibel range;
右声道的噪声比是否在预设第二噪声比范围。Whether the noise ratio of the right channel is within the preset second noise ratio range.
优选的，在所述步骤S7中，生成测试结果结束，包括：Preferably, in the step S7, the end of generating the test result includes:
将测试结果导入测试模板中，生成测试结果。Import the test results into the test template and generate the test results.
上述技术方案的有益效果：The beneficial effects of the above technical solutions:
本技术方案中，采用控制端控制测试端对待测设备依据测试规则依次进行，排查待测设备的功放是否正常，从而为待测设备的语音识别功能正常运行提供保障，可快速准确的定位待测设备的故障位置，提高了检测效果。In this technical solution, the control terminal is used to control the test terminal to proceed sequentially according to the test rules to check whether the power amplifier of the device under test is normal, so as to guarantee the normal operation of the voice recognition function of the device under test, and quickly and accurately locate the device under test The fault location of the equipment improves the detection effect.
附图说明Description of the drawings
图1为本发明所述的功放的测试方法的一种实施例的流程图；Fig. 1 is a flowchart of an embodiment of the power amplifier testing method according to the present invention;
图2为本发明所述的功放的测试方法的一种实施例的测试框图。Fig. 2 is a test block diagram of an embodiment of the power amplifier test method according to the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.
下面结合附图和具体实施例对本发明作进一步说明，但不作为本发明的限定。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not a limitation of the present invention.
智能语音系统因功放最大输出电平设置不正确，或电性不能满足要求等因素，会造成语音不能识别或语音识别效果差的问题，基于上述问题，本申请提出了一种可有效的检测智能语音系统语音识别是否正常，检测效率高的功放的测试方法。Due to the incorrect setting of the maximum output level of the power amplifier or the inability to meet the electrical requirements of the intelligent voice system, it will cause the problem of speech recognition or poor speech recognition. Based on the above problems, this application proposes an effective detection intelligence Whether the speech recognition of the speech system is normal or not, it is a test method to detect the high efficiency power amplifier.
如图1-图2所示，一种功放的测试方法，待测设备1分别与控制端2和测试端3连接，所述控制端2与所述测试端3连接；所述控制端2控制所述测试端3对所述待测设备1进行测试；As shown in Figure 1-2, a power amplifier testing method, the device under test 1 is connected to the control terminal 2 and the test terminal 3 respectively, and the control terminal 2 is connected to the test terminal 3; the control terminal 2 controls The test terminal 3 tests the device under test 1;
需要说明的是：所述待测设备1与所述测试端3可采用蓝牙方式连接；It should be noted that: the device under test 1 and the test terminal 3 can be connected by Bluetooth;
所述待测设备1可通过数据线或WIFI的通信方式与控制端2连接；The device under test 1 can be connected to the control terminal 2 through a data line or WIFI communication mode;
所述控制端2用于向所述待测设备1发送音频控制所述待测设备1输出音频信号；The control terminal 2 is used to send audio to the device under test 1 to control the device under test 1 to output audio signals;
所述控制端2还用于控制所述测试端3对所述待测设备1进行测试。The control terminal 2 is also used to control the test terminal 3 to test the device under test 1.
所述测试方法包括下述步骤：The test method includes the following steps:
S1.所述控制端对所述待测设备进行声道测试，判断输出的声道信号是否符合第一预设条件，若是，执行步骤S2；若否，执行步骤S7；S1. The control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, if yes, execute step S2; if not, execute step S7;
进一步地，所述步骤S1包括：Further, the step S1 includes:
所述控制端通过测试端对待测设备进行声道测试，所述控制端控制所述待测设备播放第一预设频率的音频，并将所述待测设备输出音量调节至音量阈值，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第一预设条件；The control terminal performs a sound channel test on the device under test through the test terminal. The control terminal controls the device under test to play audio with a first preset frequency and adjusts the output volume of the device under test to a volume threshold. The test terminal collects the channel signal output by the device under test, and judges whether the channel signal meets the first preset condition;
所述第一预设条件包括：The first preset condition includes:
声道信号的电压值是否在电压阈值范围内；Whether the voltage value of the channel signal is within the voltage threshold range;
声道信号的功率是否在功率阈值范围内。Whether the power of the channel signal is within the power threshold.
其中，声道信号包括左声道信号和右声道信号。Among them, the channel signal includes a left channel signal and a right channel signal.
在步骤S1中在进行声道测试时，分别对左声道和右声道的电压值进行判断；同时对左声道和右声道的功率值进行判断，若左声道和右声道有至少一个不符合阈值范围则视为测试失败执行步骤S7。In step S1, when the channel test is performed, the voltage values of the left channel and the right channel are judged separately; the power values of the left channel and the right channel are judged at the same time, if the left channel and the right channel have At least one that does not meet the threshold range is regarded as a test failure, and step S7 is executed.
作为举例而非限定，在执行步骤S1之前，可对待测设备的焊接、供电是否正常，以及寄存器设置是否符合要求进行排查检测。As an example and not a limitation, before step S1 is executed, whether the welding and power supply of the equipment to be tested is normal, and whether the register settings meet the requirements can be checked.
S2.所述控制端对所述待测设备进行总谐波失真加噪声测试，判断输出的声道信号是否符合第二预设条件，若是，执行步骤S3；若否，执行步骤S7；S2. The control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, if yes, execute step S3; if not, execute step S7;
进一步地，所述步骤S2包括：Further, the step S2 includes:
所述控制端通过测试端对待测设备进行总谐波失真加噪声测试，所述控制端控制所述待测设备播放第二预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第二预设条件；The control terminal performs a total harmonic distortion plus noise test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a second preset frequency, and the test terminal collects the output of the device under test Channel signal, judging whether the channel signal meets the second preset condition;
第二预设条件包括：声道信号的分贝是否在第一分贝阈值范围内。The second preset condition includes: whether the decibel of the channel signal is within the first decibel threshold range.
其中，声道信号包括左声道信号和右声道信号。Among them, the channel signal includes a left channel signal and a right channel signal.
在步骤S2中在进行总谐波失真加噪声测试时，分别对左声道和右声道的分贝进行判断；若左声道和右声道的分贝有至少一个不符合阈值范围则视为测试失败执行步骤S7。In step S2, when the total harmonic distortion plus noise test is performed, the decibels of the left and right channels are judged separately; if at least one of the decibels of the left and right channels does not meet the threshold range, it is regarded as a test If it fails, step S7 is executed.
S3.所述控制端对所述待测设备进行串扰测试，判断输出的声道信号是否符合第三预设条件，若是，执行步骤S4；若否，执行步骤S7；S3. The control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, if yes, execute step S4; if not, execute step S7;
进一步地，所述步骤S3包括：Further, the step S3 includes:
所述控制端通过测试端对待测设备进行串扰测试，所述控制端控制所述待测设备播放第三预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第三预设条件；The control terminal performs a crosstalk test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a third preset frequency, and the test terminal collects the channel signal output by the device under test and determines Whether the channel signal meets the third preset condition;
第三预设条件包括：The third preset conditions include:
左声道到右声道的分贝是否在第二分贝阈值范围内；Whether the decibel from the left channel to the right channel is within the second decibel threshold;
右声道到左声道的分贝是否在第三分贝阈值范围内。Whether the decibel from the right channel to the left channel is within the third decibel threshold.
在步骤S3中在进行串扰测试时，若左声道和右声道的分贝有至少一个不符合阈值范围则视为测试失败执行步骤S7。During the crosstalk test in step S3, if at least one of the decibels of the left channel and the right channel does not meet the threshold range, it is deemed that the test has failed, and step S7 is executed.
S4.所述控制端对所述待测设备进行幅频响应测试，判断输出的声道信号是否符合第四预设条件，若是，执行步骤S5；若否，执行步骤S7；S4. The control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, if yes, execute step S5; if not, execute step S7;
进一步地，所述步骤S4包括：Further, the step S4 includes:
所述控制端通过测试端对待测设备进行幅频响应测试，所述控制端控制所述待测设备播放第四预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第四预设条件；The control terminal performs an amplitude-frequency response test of the device under test through the test terminal, the control terminal controls the device under test to play audio with a fourth preset frequency, and the test terminal collects the channel signal output by the device under test , Judge whether the channel signal meets the fourth preset condition;
第四预设条件包括：The fourth preset conditions include:
声道信号的最大分贝是否在第四分贝阈值范围内；Whether the maximum decibel of the channel signal is within the fourth decibel threshold;
声道信号的最小分贝是否在第五分贝阈值范围内。Whether the minimum decibel of the channel signal is within the fifth decibel threshold.
在步骤S4中在进行幅频响应测试时，分别对左声道和右声道的最大分贝进行判断；若左声道和右声道的最大分贝有至少一个不符合阈值范围则视为测试失败执行步骤S7。In step S4, when the amplitude-frequency response test is performed, the maximum decibels of the left and right channels are judged separately; if at least one of the maximum decibels of the left and right channels does not meet the threshold range, the test is regarded as a failure Step S7 is executed.
S5.所述控制端对所述待测设备进行相位差及电平差测试，判断输出的声道信号是否符合第五预设条件，若是，执行步骤S6；若否，执行步骤S7；S5. The control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, if yes, execute step S6; if not, execute step S7;
进一步地，所述步骤S5包括：Further, the step S5 includes:
所述控制端通过测试端对待测设备进行相位差及电平差测试，所述控制端控制所述待测设备播放第五预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第五预设条件；The control terminal performs phase difference and level difference tests on the device under test through the test terminal, the control terminal controls the device under test to play audio with a fifth preset frequency, and the test terminal collects the output of the device under test Channel signal, judge whether the channel signal meets the fifth preset condition;
第五预设条件包括：The fifth preset conditions include:
在进行相位差测试时，左声道与右声道之间的相位差是否在预设差值范围内；During the phase difference test, whether the phase difference between the left channel and the right channel is within the preset difference range;
在进行电平差测试时，左声道与右声道之间的分贝差是否在第六分贝阈值 范围内。During the level difference test, whether the decibel difference between the left channel and the right channel is within the sixth decibel threshold.
在步骤S5中若相位差测试和电平差测试中有至少一个测试失败，则视为测试失败执行步骤S7。In step S5, if at least one of the phase difference test and the level difference test fails, it is deemed that the test has failed and step S7 is executed.
S6.所述控制端对所述待测设备进行噪声比测试，识别输出的声道信号是否符合第六预设条件，执行步骤S7；S6. The control terminal performs a noise ratio test on the device under test, identifies whether the output channel signal meets the sixth preset condition, and executes step S7;
进一步地，所述步骤S6包括：Further, the step S6 includes:
所述控制端通过测试端对待测设备进行噪声比测试，所述控制端控制所述待测设备播放第六预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第六预设条件；The control terminal performs a noise ratio test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a sixth preset frequency, and the test terminal collects the channel signal output by the device under test, Determine whether the channel signal meets the sixth preset condition;
第六预设条件包括：The sixth preset condition includes:
左声道的噪声分贝是否在预设第一噪声分贝范围；Whether the noise decibel of the left channel is within the preset first noise decibel range;
左声道的噪声比是否在预设第一噪声比范围；Whether the noise ratio of the left channel is within the preset first noise ratio range;
右声道的噪声分贝是否在预设第二噪声分贝范围；Whether the noise decibel of the right channel is within the preset second noise decibel range;
右声道的噪声比是否在预设第二噪声比范围。Whether the noise ratio of the right channel is within the preset second noise ratio range.
在步骤S6中若至少一个声道的噪声分贝或噪声比不符合相应的范围，则视为测试失败，若所有的测试均通过则视为功放测试通过，待测设备的语音识别功能正常运行。In step S6, if the noise decibel or noise ratio of at least one channel does not meet the corresponding range, it is deemed that the test has failed, and if all the tests pass, it is deemed that the power amplifier test has passed, and the voice recognition function of the device under test is operating normally.
S7.生成测试结果结束。S7. End of generating test results.
具体地，在步骤S7中可将测试结果导入测试模板中，生成测试结果，记录测试波形，该测试结果可采用文档格式。Specifically, in step S7, the test result can be imported into the test template, the test result is generated, and the test waveform is recorded, and the test result can be in a document format.
需要说明的是：待测设备可以是智能电视、智能机顶盒、智能音箱等需要语音控制的电子产品。It should be noted that the device under test can be a smart TV, a smart set-top box, a smart speaker and other electronic products that require voice control.
在本实施例中，采用控制端控制测试端对待测设备依据测试规则依次进行，排查待测设备的功放是否正常，从而为待测设备的语音识别功能正常运行提供保障，可快速准确的定位待测设备的故障位置，提高了检测效果，避免反复调试，节约时间和成本，避免资源浪费。In this embodiment, the control terminal is used to control the test terminal to proceed sequentially according to the test rules to check whether the power amplifier of the device under test is normal, so as to provide guarantee for the normal operation of the voice recognition function of the device under test, which can quickly and accurately locate the device under test. The fault location of the testing equipment improves the detection effect, avoids repeated debugging, saves time and cost, and avoids waste of resources.
以上所述仅为本发明较佳的实施例，并非因此限制本发明的实施方式及保护范围，对于本领域技术人员而言，应当能够意识到凡运用本发明说明书及图示内容所作出的等同替换和显而易见的变化所得到的方案，均应当包含在本发明的保护范围内。The above descriptions are only preferred embodiments of the present invention, and do not limit the implementation and protection scope of the present invention. For those skilled in the art, they should be able to realize that any equivalent made by using the description and illustrations of the present invention The solutions obtained by substitutions and obvious changes should all be included in the protection scope of the present invention.

Claims (9)

  1. 一种功放的测试方法，其特征在于：待测设备分别与控制端和测试端连接，所述控制端与所述测试端连接；所述控制端控制所述测试端对所述待测设备进行测试；所述测试方法包括下述步骤：A power amplifier testing method, characterized in that: a device under test is connected to a control terminal and a test terminal, the control terminal is connected to the test terminal; the control terminal controls the test terminal to perform the test on the device under test Test; The test method includes the following steps:
    S1.所述控制端对所述待测设备进行声道测试，判断输出的声道信号是否符合第一预设条件，若是，执行步骤S2；若否，执行步骤S7；S1. The control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, if yes, execute step S2; if not, execute step S7;
    S2.所述控制端对所述待测设备进行总谐波失真加噪声测试，判断输出的声道信号是否符合第二预设条件，若是，执行步骤S3；若否，执行步骤S7；S2. The control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, if yes, execute step S3; if not, execute step S7;
    S3.所述控制端对所述待测设备进行串扰测试，判断输出的声道信号是否符合第三预设条件，若是，执行步骤S4；若否，执行步骤S7；S3. The control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, if yes, execute step S4; if not, execute step S7;
    S4.所述控制端对所述待测设备进行幅频响应测试，判断输出的声道信号是否符合第四预设条件，若是，执行步骤S5；若否，执行步骤S7；S4. The control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, if yes, execute step S5; if not, execute step S7;
    S5.所述控制端对所述待测设备进行相位差及电平差测试，判断输出的声道信号是否符合第五预设条件，若是，执行步骤S6；若否，执行步骤S7；S5. The control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, if yes, execute step S6; if not, execute step S7;
    S6.所述控制端对所述待测设备进行噪声比测试，识别输出的声道信号是否符合第六预设条件，执行步骤S7；S6. The control terminal performs a noise ratio test on the device under test, identifies whether the output channel signal meets the sixth preset condition, and executes step S7;
    S7.生成测试结果结束。S7. End of generating test results.
  2. 根据权利要求1所述的功放的测试方法，其特征在于：所述待测设备与所述测试端采用蓝牙方式连接；The power amplifier test method according to claim 1, wherein the device under test and the test terminal are connected in a Bluetooth mode;
    所述控制端用于向所述待测设备发送音频控制所述待测设备输出音频信号；The control terminal is used to send audio to the device under test to control the device under test to output audio signals;
    所述控制端还用于控制所述测试端对所述待测设备进行测试。The control terminal is also used to control the test terminal to test the device under test.
  3. 根据权利要求1所述的功放的测试方法，其特征在于：所述步骤S1中，所述控制端对所述待测设备进行声道测试，判断输出的声道信号是否符合第一预设条件，包括：The power amplifier testing method according to claim 1, characterized in that: in the step S1, the control terminal performs a channel test on the device under test to determine whether the output channel signal meets the first preset condition ,include:
    所述控制端通过测试端对待测设备进行声道测试，所述控制端控制所述待测设备播放第一预设频率的音频，并将所述待测设备输出音量调节至音量阈 值，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第一预设条件；The control terminal performs a sound channel test on the device under test through the test terminal. The control terminal controls the device under test to play audio with a first preset frequency and adjusts the output volume of the device under test to a volume threshold. The test terminal collects the channel signal output by the device under test, and determines whether the channel signal meets the first preset condition;
    所述第一预设条件包括：The first preset condition includes:
    声道信号的电压值是否在电压阈值范围内；Whether the voltage value of the channel signal is within the voltage threshold range;
    声道信号的功率是否在功率阈值范围内。Whether the power of the channel signal is within the power threshold.
  4. 根据权利要求1所述的功放的测试方法，其特征在于：所述步骤S2中，所述控制端对所述待测设备进行总谐波失真加噪声测试，判断输出的声道信号是否符合第二预设条件，包括：The power amplifier test method according to claim 1, characterized in that: in the step S2, the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal conforms to the first Two preset conditions, including:
    所述控制端通过测试端对待测设备进行总谐波失真加噪声测试，所述控制端控制所述待测设备播放第二预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第二预设条件；The control terminal performs a total harmonic distortion plus noise test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a second preset frequency, and the test terminal collects the output of the device under test Channel signal, judging whether the channel signal meets the second preset condition;
    第二预设条件包括：声道信号的分贝是否在第一分贝阈值范围内。The second preset condition includes: whether the decibel of the channel signal is within the first decibel threshold range.
  5. 根据权利要求1所述的功放的测试方法，其特征在于：所述步骤S3中，所述控制端对所述待测设备进行串扰测试，判断输出的声道信号是否符合第三预设条件，包括：The power amplifier test method according to claim 1, wherein in step S3, the control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets a third preset condition, include:
    所述控制端通过测试端对待测设备进行串扰测试，所述控制端控制所述待测设备播放第三预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第三预设条件；The control terminal performs a crosstalk test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a third preset frequency, and the test terminal collects the channel signal output by the device under test and determines Whether the channel signal meets the third preset condition;
    第三预设条件包括：The third preset conditions include:
    左声道到右声道的分贝是否在第二分贝阈值范围内；Whether the decibel from the left channel to the right channel is within the second decibel threshold;
    右声道到左声道的分贝是否在第三分贝阈值范围内。Whether the decibel from the right channel to the left channel is within the third decibel threshold.
  6. 根据权利要求1所述的功放的测试方法，其特征在于：所述步骤S4中，所述控制端对所述待测设备进行幅频响应测试，判断输出的声道信号是否符合第四预设条件，包括：The power amplifier test method according to claim 1, wherein in step S4, the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset Conditions, including:
    所述控制端通过测试端对待测设备进行幅频响应测试，所述控制端控制所述待测设备播放第四预设频率的音频，所述测试端采集所述待测设备输出的声 道信号，判断声道信号是否符第四预设条件；The control terminal performs an amplitude-frequency response test of the device under test through the test terminal, the control terminal controls the device under test to play audio with a fourth preset frequency, and the test terminal collects the channel signal output by the device under test , Judge whether the channel signal meets the fourth preset condition;
    第四预设条件包括：The fourth preset conditions include:
    声道信号的最大分贝是否在第四分贝阈值范围内；Whether the maximum decibel of the channel signal is within the fourth decibel threshold;
    声道信号的最小分贝是否在第五分贝阈值范围内。Whether the minimum decibel of the channel signal is within the fifth decibel threshold.
  7. 根据权利要求1所述的功放的测试方法，其特征在于：所述步骤S5中，所述控制端对所述待测设备进行相位差及电平差测试，判断输出的声道信号是否符合第五预设条件，包括：The power amplifier test method according to claim 1, characterized in that: in the step S5, the control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal conforms to the first Five preset conditions, including:
    所述控制端通过测试端对待测设备进行相位差及电平差测试，所述控制端控制所述待测设备播放第五预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第五预设条件；The control terminal performs phase difference and level difference tests on the device under test through the test terminal, the control terminal controls the device under test to play audio of the fifth preset frequency, and the test terminal collects the output of the device under test Channel signal, judge whether the channel signal meets the fifth preset condition;
    第五预设条件包括：The fifth preset conditions include:
    在进行相位差测试时，左声道与右声道之间的相位差是否在预设差值范围内；During the phase difference test, whether the phase difference between the left channel and the right channel is within the preset difference range;
    在进行电平差测试时，左声道与右声道之间的分贝差是否在第六分贝阈值范围内。During the level difference test, whether the decibel difference between the left channel and the right channel is within the sixth decibel threshold.
  8. 根据权利要求1所述的功放的测试方法，其特征在于：所述步骤S6中，所述控制端对所述待测设备进行噪声比测试，识别输出的声道信号是否符合第六预设条件，包括：The power amplifier test method according to claim 1, wherein in the step S6, the control terminal performs a noise ratio test on the device under test to identify whether the output channel signal meets the sixth preset condition ,include:
    所述控制端通过测试端对待测设备进行噪声比测试，所述控制端控制所述待测设备播放第六预设频率的音频，所述测试端采集所述待测设备输出的声道信号，判断声道信号是否符第六预设条件；The control terminal performs a noise ratio test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a sixth preset frequency, and the test terminal collects the channel signal output by the device under test, Determine whether the channel signal meets the sixth preset condition;
    第六预设条件包括：The sixth preset condition includes:
    左声道的噪声分贝是否在预设第一噪声分贝范围；Whether the noise decibel of the left channel is within the preset first noise decibel range;
    左声道的噪声比是否在预设第一噪声比范围；Whether the noise ratio of the left channel is within the preset first noise ratio range;
    右声道的噪声分贝是否在预设第二噪声分贝范围；Whether the noise decibel of the right channel is within the preset second noise decibel range;
    右声道的噪声比是否在预设第二噪声比范围。Whether the noise ratio of the right channel is within the preset second noise ratio range.
  9. 根据权利要求1所述的功放的测试方法，其特征在于：在所述步骤S7中，生成测试结果结束，包括：The power amplifier testing method according to claim 1, characterized in that: in said step S7, the end of generating the test result, comprising:
    将测试结果导入测试模板中，生成测试结果。Import the test results into the test template and generate the test results.
PCT/CN2020/091113 2019-05-24 2020-05-19 Method for testing power amplifier WO2020238702A1 (en)

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