CN-224218518-U - Earphone microphone sensitivity compensation calibration system and sensitivity test device

CN224218518UCN 224218518 UCN224218518 UCN 224218518UCN-224218518-U

Abstract

The system comprises a main control module, a sound card power amplification module, a sensitivity test module and an earphone module, wherein the main control module is provided with an acquisition unit, a comparison calculation unit, a gain setting unit and a sending unit, the acquisition unit is used for acquiring gain values of a main microphone and an auxiliary microphone of the earphone to be tested so that the gain values of the main microphone and the auxiliary microphone of the earphone to be tested are respectively recorded as a first gain value and a second gain value, and the comparison calculation unit is used for comparing whether the first gain value is located in a first gain value interval or not and whether the second gain value is located in a second gain value interval or not. When the obtained gain value is out of the corresponding range, absolute difference is made between the gain value and the upper limit of the gain value in the corresponding range, and the difference is written into a chip of the earphone to be tested, so that the subsequent earphone test takes the last calibrated sensitivity value as a reference value, and the requirement of batch test can be met.

Inventors

LI CHANGDI
LUO QIYUAN
WANG LI

Assignees

深圳市豪恩声学股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250526

Claims (10)

1. A sensitivity compensation calibration system for earphone microphone is characterized in that, The intelligent sound card power amplifier comprises a main control module, a sound card power amplifier module, a sensitivity test module and an earphone module, wherein a unidirectional output end of the main control module is electrically connected with an electric connection end of the sound card power amplifier module, a unidirectional output end of the sound card power amplifier module is electrically connected with the electric connection end of the sensitivity test module, a bidirectional data communication end of the main control module is electrically connected with a bidirectional data interaction end of the sensitivity test module, an earphone power supply end of the sensitivity test module is electrically connected with the electric connection end of the earphone module, and a communication output end of the main control module is in communication connection with a communication receiving end of the earphone module; The signal output end of the sensitivity test module is used for sending out acoustic signals to the main microphone and the auxiliary microphone of the acoustic prototype and sending out acoustic signals to the main microphone and the auxiliary microphone of the test earphone, and the access end of the sensitivity test module is used for electrically connecting the acoustic prototype and the test earphone; The main control module comprises an acquisition unit, a comparison and calculation unit, a gain setting unit and a sending unit, wherein a data receiving end of the acquisition unit is electrically connected with an output sending end of the sensitivity test module, a data acquisition end of the comparison and calculation unit is electrically connected with a sending end of the acquisition unit, a comparison end of the gain setting unit is electrically connected with a numerical comparison end of the comparison and calculation unit, a difference value acquisition end of the sending unit is electrically connected with a difference value output end of the comparison and calculation unit, and a data sending end of the sending unit is in communication connection with a communication receiving end of the earphone module; The gain setting unit is used for setting a first gain value interval and a second gain value interval, the comparison calculation unit is used for comparing whether the first gain value is located in the first gain value interval or not, and whether the second gain value is located in the second gain value interval or not, the comparison calculation unit is also used for performing absolute subtraction calculation on the first gain value located outside the first gain value interval and the upper limit value of the first gain value interval to obtain a first difference value, and used for performing absolute subtraction calculation on the second gain value located outside the second gain value interval and the upper limit value of the second gain value interval to obtain a second difference value, and the comparison calculation unit is used for writing the second difference value into the second chip to be tested.
2. The headset microphone sensitivity compensation calibration system of claim 1, wherein the sensitivity test module comprises a first simulation nozzle, a second simulation nozzle and a test fixture, the first simulation nozzle and the second simulation nozzle are both arranged on the test fixture, the first simulation nozzle is used for sending out acoustic signals to a main microphone of the acoustic prototype and a main microphone of the headset to be tested, and the second simulation nozzle is used for sending out acoustic signals to a sub microphone of the acoustic prototype and a sub microphone of the headset to be tested.
3. The headset microphone sensitivity compensation calibration system of claim 2, wherein the power supply end of the test fixture is electrically connected to the power connection end of the headset module.
4. The headset microphone sensitivity compensation calibration system of claim 2, wherein the power connection end of the first dummy nozzle and the power connection end of the second dummy nozzle are electrically connected to a unidirectional output end of the sound card power amplifier module.
5. The headset microphone sensitivity compensation calibration system of claim 1, wherein the headset module is an acoustic prototype or a headset to be tested.
6. The headset microphone sensitivity compensation calibration system of claim 1, wherein the master control module is a test computer.
7. The headset microphone sensitivity compensation calibration system of claim 1, wherein the sound card power amplifier module is a sound card power amplifier all-in-one.
8. The headset microphone sensitivity compensation calibration system of claim 1, further comprising a binary conversion module, wherein a value receiving end of the binary conversion module is electrically connected to a value output end of the transmitting unit, and a value conversion output end of the binary conversion module is electrically connected to a data receiving end of the sensitivity test module, so that the binary conversion module is configured to perform binary conversion on the obtained first difference value and the obtained second difference value, and write the obtained first difference value and the obtained second difference value to a chip of the headset to be tested.
9. The headset microphone sensitivity compensation calibration system of claim 8 wherein the binary conversion module is a hexadecimal conversion module and wherein, The system conversion module is used for converting the acquired first difference value and the second difference value into hexadecimal system and writing the hexadecimal system into a chip of the earphone to be tested.
10. A sensitivity testing device comprising the headset microphone sensitivity compensation calibration system of any one of claims 1-9.

Description

Earphone microphone sensitivity compensation calibration system and sensitivity test device Technical Field The disclosure relates to the technical field of earphone testing, in particular to an earphone microphone sensitivity compensation calibration system and a sensitivity testing device. Background The wireless Teams Bluetooth headset is a headset suitable for high-quality audio communication scenes, and along with the high-speed development of the current society, the practicability of the headset in scenes such as online conferences, video calls, voice communications and the like is more and more favored by consumers. In order to ensure test authentication, the existing production line only carries out a pull-difference test on a main microphone of the earphone, only verifies curve characteristics of two angles of 0 degree (opposite to a sound source) and 180 degrees (opposite to the sound source), and lacks of a test on a Gain value (Gain value) of an earphone microphone under a simulation use scene, so that the balance of voice sensitivity and bottom noise cannot be optimized through the Gain value of the earphone microphone, further the sensitivity of the earphone microphone is caused to fluctuate, the test function authentication of the earphone cannot be effectively ensured, and the problems of poor sensitivity, abnormal conversation or interruption of the microphone and the like of a user when the earphone is used are caused, and the use experience is greatly discounted. Disclosure of utility model The purpose of the present disclosure is to overcome the shortcomings in the prior art, and provide an earphone microphone sensitivity compensation calibration system and a sensitivity test device that can realize earphone microphone compensation value test, and ensure that the user is not easy to have sensitivity and call problems when using the earphone. The aim of the disclosure is achieved by the following technical scheme: A sensitivity compensation calibration system for an earphone microphone comprises a main control module, a sound card power amplification module, a sensitivity test module and an earphone module, wherein a unidirectional output end of the main control module is electrically connected with an electric connection end of the sound card power amplification module, the unidirectional output end of the sound card power amplification module is electrically connected with the electric connection end of the sensitivity test module, a bidirectional data communication end of the main control module is electrically connected with a bidirectional data interaction end of the sensitivity test module, an earphone power supply end of the sensitivity test module is electrically connected with the electric connection end of the earphone module, a communication output end of the main control module is in communication connection with a communication receiving end of the earphone module, a signal output end of the sensitivity test module is used for sending acoustic signals to a main microphone and an auxiliary microphone of an acoustic model machine, an input end of the sensitivity test module is used for electrically connecting the acoustic model machine and the test earphone, the main control module is provided with an acquisition unit, a comparison calculation unit, a gain setting unit and a transmission unit, a data receiving end of the acquisition unit is electrically connected with the electric connection end of the sensitivity model machine, a data receiving end of the acquisition unit is electrically connected with the electric connection end of the acoustic model machine, a gain setting unit is connected with the acquisition unit, a gain value acquisition unit is set at the acquisition unit and the transmission unit is connected with the transmission unit, and the acquisition unit is connected with the acquisition unit of a gain value acquisition unit, the method comprises the steps of obtaining gain values of a main microphone and an auxiliary microphone of the earphone to be tested in a second mode, respectively marking the gain values of the main microphone and the auxiliary microphone of the earphone to be tested as a first gain value and a second gain value, setting a first gain value interval and a second gain value interval by a gain setting unit, comparing whether the first gain value is located in the first gain value interval with whether the second gain value is located in the second gain value interval, and writing the first difference value and/or the second difference value into a chip of the earphone to be tested by a transmitting unit. In one embodiment, the sensitivity test module includes a first simulation nozzle, a second simulation nozzle and a test fixture, the first simulation nozzle and the second simulation nozzle are both disposed on the test fixture, the first simulation nozzle is used for sending out acoustic signals to a main microphone of the acoustic protot