Earphone voice pickup sensor vibration test system and vibration test method

Abstract

The invention relates to the technical field of earphone testing, in particular to an earphone voice pickup sensor vibration test system and vibration test method, and the system comprises an upper computer, a vibration table, an acceleration sensor, a sound card, an adaptive amplifier and a power amplifier. The sound card receives signals transmitted by the upper computer and outputs the signals to the power amplifier, and the power amplifier amplifies the signals and then drives the vibration table to vibrate; the adaptive amplifier supplies power to the acceleration sensor and transmits signals fed back by the acceleration sensor to the sound card, and the sound card receives the signals and transmits the signals to the upper computer. The test method comprises the step of calibrating the vibration test system by using the delivery calibration curve of the acceleration sensor. According to the system and the test method, the acceleration sensor is used for calibrating the amplitude of the vibration table, the problem that the amplitudes of the vibration tables of multiple sets of test systems are inconsistent under the same frequency is solved, copying of the vibration test systems is facilitated, and the system and the test method have the advantages of accurate test result, high efficiency, good stability and the like and can meet batch test requirements of production lines.

Description

technical field [0001] The invention relates to the technical field of earphone testing, in particular to an earphone voice pickup sensor vibration testing system and a vibration testing method. Background technique [0002] The voice pick-up sensor is an important part of the earphone, among which the bone conduction earphone voice pick-up sensor is a vibration audio sensing element designed based on the testing principle of the acceleration sensor. It is mainly used in wireless Bluetooth headsets, underwater communications, hearing aids and all high-end It is used for anti-noise communication in special noise environment. Bone conduction is a sound conduction method, which converts sound into mechanical vibrations of different frequencies, and transmits sound waves through the human skull, bone labyrinth, inner ear lymph fluid, spiral organ, and auditory center. Compared with the classic sound conduction method of generating sound waves through the diaphragm, bone conduct...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a vibration test system and a vibration test method for an earphone voice pickup sensor to solve the problem of inconsistency in the amplitude of the vibration table at the same frequency among multiple sets of vibration test systems, and to facilitate the vibration test system. Replication, with the advantages of accurate test results, high test efficiency, and good system stability, can meet the needs of batch testing in production lines

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