CN111065035B - Bone conduction earphone testing method and testing system - Google Patents
Bone conduction earphone testing method and testing system Download PDFInfo
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- CN111065035B CN111065035B CN201911353371.7A CN201911353371A CN111065035B CN 111065035 B CN111065035 B CN 111065035B CN 201911353371 A CN201911353371 A CN 201911353371A CN 111065035 B CN111065035 B CN 111065035B
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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
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Abstract
The invention provides a bone conduction earphone testing method, which comprises the following steps: sending an audio test signal, and transmitting the audio test signal to a bone conduction earphone to be tested for vibration playing; collecting a vibration signal at a loudspeaker of the bone conduction earphone to be tested; analyzing the collected vibration signals; carrying out simulated human face acoustic impedance operation on the analysis result to obtain the frequency domain internal parameters of the bone conduction headset to be tested; and judging the test result of the bone conduction earphone to be tested according to the parameters in the frequency domain. The invention also includes a bone conduction headset testing system comprising: audio test software, a Bluetooth module, a laser sensor, an audio analyzer and a power supply device. The bone conduction earphone testing device can test the bone conduction earphone, is high in accuracy and simple and convenient to operate, and effectively improves the production quality of the bone conduction earphone.
Description
Technical Field
The invention relates to a testing method and a testing system for a bone conduction earphone.
Background
At present, people have healthy living quality, the sports type earphones in audio products are not in the same level, and bone conduction earphones are one of the sports type earphones, so that the sports type earphones are fashionable and attractive, can overcome the defects of conventional in-ear type earphones and conventional head-wearing earphones, and have strong openness. However, many problems still exist in testing in actual production of bone conduction earphones, and currently, corresponding equipment is not available for testing the bone conduction earphones temporarily, so that the production quality of the bone conduction earphones cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a bone conduction headset testing method and a testing system.
The invention aims to solve the problem that the production quality of the bone conduction earphone cannot be ensured because corresponding testing equipment and method are not available in the actual production of the existing bone conduction earphone.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a bone conduction headset testing method is characterized by comprising the following steps:
s1, sending out an audio test signal, and transmitting the audio test signal to a bone conduction headset to be tested for vibration playing;
s2, collecting vibration signals at the position of a bone conduction headset loudspeaker to be tested;
s3, analyzing the collected vibration signals;
s4, carrying out simulated human face acoustic impedance operation on the analysis result to obtain the frequency domain internal parameters of the bone conduction headset to be tested;
and S5, judging the test result of the bone conduction headset to be tested according to the parameters in the frequency domain.
Further, in step S2, a detection point location is set at the speaker of the bone conduction headset to be tested, and the vibration signal is a vibration amplitude of the speaker of the bone conduction headset to be tested, that is, a displacement of the detection point location.
Further, the parsing process in the step S3 includes fitting a force coefficient according to the vibration signal at the bone conduction headset speaker to be tested.
Further, the analog human face acoustic impedance operation in step S4 is a bone conduction path of the analog audio test signal, that is, the analog audio test signal passes through the temporal bone after being vibrated and played by the bone conduction headset to be tested, and then responds at the cochlea.
Further, the testing method further comprises establishing a free-field environment before the testing starts.
Further, the parameters in the frequency domain are the parameter characteristics of the response at the cochlea, including a frequency response curve, a distortion curve, a resonance frequency and sensitivity.
The invention also provides a bone conduction earphone testing system, and the testing system applies the bone conduction earphone testing method, and comprises the following steps:
audio test software: the system is used for sending out a test signal and simulating the acoustic impedance operation of a human face;
a Bluetooth module: the bone conduction earphone is used for connecting the audio test software and the bone conduction earphone to be tested and transmitting an audio test signal;
a laser sensor: the device is used for acquiring vibration signals at the loudspeaker of the bone conduction earphone to be tested;
an audio analyzer: the vibration signal analysis device is used for analyzing and processing the vibration signal;
a power supply device: for powering the bone conduction headset to be tested.
Preferably, the test system further comprises a PC terminal, and the audio test software is installed on the PC terminal.
Preferably, the test system further comprises an acoustic isolation box.
The bone conduction earphone testing method and the bone conduction earphone testing system have the following beneficial effects:
the audio test software system sends the test signal to the bone conduction earphone for playing, the test signal is received by the laser sensor and then transmitted to the audio analyzer for analysis, the signal is transmitted to the audio test software system for analysis and operation, and finally the parameter is displayed.
Drawings
FIG. 1: the steps of the test method of the invention are shown;
FIG. 2: the invention tests the logic architecture diagram.
Detailed Description
The existing bone conduction earphone has no corresponding testing equipment and method in actual production, so that the production quality of the bone conduction earphone cannot be ensured. Therefore, the present invention provides a new solution, which will be described in detail below with reference to the accompanying drawings for better clarity.
Referring to fig. 1-2, the present invention provides a bone conduction headset testing system, comprising:
audio test software: the system is used for sending out a test signal and simulating the acoustic impedance operation of a human face;
a Bluetooth module: the bone conduction earphone is used for connecting the audio test software and the bone conduction earphone to be tested and transmitting an audio test signal;
a laser sensor: the device is used for acquiring vibration signals at the loudspeaker of the bone conduction earphone to be tested;
an audio analyzer: the vibration signal analysis device is used for analyzing and processing the vibration signal;
a power supply device: for powering the bone conduction headset to be tested.
The test system further comprises a PC end, and the audio test software is installed on the PC end.
The test system also includes a sound isolation box.
In this embodiment, the Audio test software is not limited, and the Audio tester may be a Sound check Audio tester, an Audio Precision Audio test analyzer, an MLSSA Audio tester, a CLIO Audio tester, a B & K Audio tester, an LMS Audio tester, an AudioExpert Audio tester, or other relevant Audio test devices.
The bone conduction earphone testing method comprises the following steps:
s1, sending out an audio test signal, and transmitting the audio test signal to a bone conduction headset to be tested for vibration playing;
s2, collecting vibration signals at the position of a bone conduction headset loudspeaker to be tested;
s3, analyzing the collected vibration signals;
s4, carrying out simulated human face acoustic impedance operation on the analysis result to obtain the frequency domain internal parameters of the bone conduction headset to be tested;
and S5, judging the test result of the bone conduction headset to be tested according to the parameters in the frequency domain.
In this embodiment, the bone conduction headset to be tested is connected with the audio test software in a matching manner through the bluetooth module, the audio test software transmits the test signal to the bluetooth module, and then the bluetooth module transmits the signal to the speaker part of the bone conduction headset to be tested through the power amplifier for vibration playing.
Setting a detection point position at a loudspeaker of a bone conduction headset to be tested, wherein the vibration signal is the vibration amplitude of the loudspeaker of the bone conduction headset to be tested, namely the displacement of the detection point position;
in the embodiment, a white point is formed on the vibration surface of the shell of the bone conduction earphone loudspeaker to be tested, the laser sensor is adjusted to enable laser to irradiate on the white point, and then the displacement of the white point is detected.
The parsing process in step S3 in this embodiment includes that the audio analyzer fits the force coefficient according to the vibration signal at the speaker of the bone conduction headset to be tested, and the formula is expressed as follows:
Hx(f)＝X(f)/U(f)，
let x (f) be a displacement function, i.e. a transfer function of the displacement of the bone conduction earphone speaker housing vibration; u (f) is a function of the input voltage, i.e. the transfer function of the signal voltage applied across the bone conduction earpiece speaker.
The simulated human face acoustic impedance operation in the step S4 is a bone conduction path of the simulated audio test signal, that is, the simulated audio test signal passes through the temporal bone after being vibrated and played by the bone conduction headset to be tested, and then responds at the cochlea.
The test method also comprises the step of establishing a free field environment before the test is started, so that the test accuracy can be improved.
The parameters in the frequency domain are the parameter characteristics of the response at the cochlea, including a frequency response curve, a distortion curve, a resonant frequency and sensitivity.
The frequency response curve reflects the radiation capability of the loudspeaker to sound waves with different frequencies; the distortion curve can reflect the difference between the sound and the original sound of the response at the cochlea; the resonance frequency can reflect low frequency characteristics of sounds responding at the cochlea; the sensitivity can reflect the electro-acoustic conversion efficiency of the sound responding at the cochlea.
And according to the parameter characteristics such as the frequency response curve, the distortion curve, the resonant frequency and the sensitivity, whether the quality of the bone conduction earphone to be tested is qualified can be obtained.
The audio test software system sends the test signal to the bone conduction earphone for playing, the test signal is received by the laser sensor and then transmitted to the audio analyzer for analysis, the signal is transmitted to the audio test software system for analysis and operation, and finally the parameter is displayed.
Although the present invention has been described in detail in the foregoing embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A bone conduction headset testing method is characterized by comprising the following steps:
s1, sending out an audio test signal, and transmitting the audio test signal to a bone conduction headset to be tested for vibration playing;
s2, collecting vibration signals at the position of a bone conduction headset loudspeaker to be tested;
s3, analyzing the collected vibration signals;
s4, carrying out simulated human face acoustic impedance operation on the analysis result to obtain the frequency domain internal parameters of the bone conduction headset to be tested;
s5, judging the test result of the bone conduction earphone to be tested according to the parameters in the frequency domain;
step S2 includes setting a detection point location at a speaker of the bone conduction headset to be tested, where the vibration signal is a vibration amplitude of the speaker of the bone conduction headset to be tested, that is, a displacement of the detection point location;
the parsing process in the step S3 includes fitting a force coefficient according to the vibration signal at the bone conduction headset speaker to be tested, which is formulated as follows:
Hx(f)＝X(f)/U(f)，
let x (f) be a displacement function, i.e. a transfer function of the displacement of the bone conduction earphone speaker housing vibration; u (f) is an input voltage function, i.e. a transfer function of the signal voltage loaded across the bone conduction earphone speaker;
the simulated human face acoustic impedance operation in the step S4 is a bone conduction path of the simulated audio test signal, that is, the simulated audio test signal passes through the temporal bone after being vibrated and played by the bone conduction headset to be tested, and then responds at the cochlea.
2. The method of claim 1, further comprising establishing a free-field environment before the testing begins.
3. The bone conduction headset testing method of claim 1, wherein: the parameters in the frequency domain are the parameter characteristics of the response at the cochlea, including a frequency response curve, a distortion curve, a resonant frequency and sensitivity.
4. A bone conduction headset testing system, which applies a bone conduction headset testing method according to any one of claims 1 to 3, comprising:
audio test software: the system is used for sending out a test signal and simulating the acoustic impedance operation of a human face;
a Bluetooth module: the bone conduction earphone is used for connecting the audio test software and the bone conduction earphone to be tested and transmitting an audio test signal;
a laser sensor: the device is used for acquiring vibration signals at the loudspeaker of the bone conduction earphone to be tested;
an audio analyzer: the vibration signal analysis device is used for analyzing and processing the vibration signal;
a power supply device: for powering the bone conduction headset to be tested.
5. The bone conduction headset testing system of claim 4, further comprising a PC terminal, the audio testing software being installed on the PC terminal.
6. The bone conduction headset testing system of claim 4, further comprising an acoustic isolation box.
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| CN111565354B (en) * | 2020-05-26 | 2021-05-04 | 北京瑞森新谱科技股份有限公司 | Testing method and testing system for bone conduction earphone |
| CN111432324B (en) * | 2020-05-26 | 2021-05-04 | 北京瑞森新谱科技股份有限公司 | Testing method and testing system for bone voiceprint earphone |
| CN112261229B (en) * | 2020-09-11 | 2022-01-18 | 歌尔科技有限公司 | Bone conduction call equipment testing method, device and system |
| CN112040386B (en) * | 2020-09-28 | 2022-04-22 | 歌尔科技有限公司 | Test system |
| CN112714392A (en) * | 2021-03-29 | 2021-04-27 | 山东交通职业学院 | Vibration test system and vibration test method for earphone voice pickup sensor |
| CN113473347B (en) * | 2021-06-30 | 2022-12-02 | 歌尔科技有限公司 | Method and device for testing bone conduction sensor on product |
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| US9462374B2 (en) * | 2012-10-24 | 2016-10-04 | Kyocera Corporation | Vibration pickup device, vibration measurement device, measurement system, and measurement method |
| US20140363002A1 (en) * | 2013-06-09 | 2014-12-11 | DSP Group | Indication of quality for placement of bone conduction transducers |
| DK3160163T3 (en) * | 2015-10-21 | 2020-08-31 | Oticon Medical As | MEASURING DEVICE FOR A BONE LINE HEARING DEVICE |
| CN207039903U (en) * | 2017-08-21 | 2018-02-23 | 深圳市韶音科技有限公司 | A kind of audio frequency vibration test device |
| CN108401217B (en) * | 2018-02-12 | 2020-06-05 | 广东小天才科技有限公司 | Signal output and TWS earphone testing method, terminal, device and storage medium |
| CN114786102A (en) * | 2018-06-15 | 2022-07-22 | 深圳市韶音科技有限公司 | Bone conduction loudspeaker |
| CN109660930B (en) * | 2018-12-14 | 2021-05-14 | 声佗医疗科技（上海）有限公司 | Vibration component testing system and method |
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