Fingerprint Touch Switch: A fingerprint touch switch is set on the ear shell. The test taker can turn on/off the ear monitor function by touching the fingerprint touch switch. With one touch, you can turn on or turn off if you want. With ear back monitoring, students can clearly monitor the size of their pronunciation, whether the pronunciation is standard, and whether the speech speed is concentrated, so as to obtain better results.

Noise Reduction: The earphone is equipped with a dedicated active noise reduction processing chip, DSP analog to digital chip noise reduction, and the new DSP analog to digital noise reduction product provides in depth processing of digital signals for microphone volume input and speaker volume output in the duplex state of the earphone.

TEENC Teaching Environment Active Noise Reduction Technology: Through the front and rear dual microphone array pickup, the front microphone picks up the main sound to produce a sine wave and the cosine wave of the background noise picked up by the rear microphone to cancel the horizontal overlap, and The main noise of the filter chip is calculated and separated to meet the teaching and test pickup requirements of weakening and filtering out the background noise.

Included Angle Pickup Calculation: The cardioid included angle pickup calculation technology is adopted. Only a single sound source can be recorded within the cardioid included angle, while the sound source outside the cardioid included angle is weakened and shielded.

Note: In the teaching and examination environment, most of them are more than a dozen to dozens of computers working in a relatively closed environment at the same time. It is inevitable that electrical pulses will be generated due to unstable voltage or current, which will then evolve into electromagnetic currents. Electromagnetic current noise.