Now the active noise reduction in the headphone market is ANC, ENC, CVC, DSP and other noise reduction technologies.

1.ANC denoise

ANC noise reduction (Active Noise Control, active noise reduction) working principle is the microphone to collect external ambient noise, and then the system changes into a reverse phase of sound wave added to the horn end, the end of the sound is: ambient noise + reverse phase of environmental noise, two kinds of noise superposition to achieve the sensory noise reduction, the beneficiary is himself.

2.ENC denoise

ENC (Environmental Noise Cancellation, environmental noise reduction technology), can effectively suppress 90% of the reverse environmental noise, thus reducing the environmental noise up to 35dB, so that game players can communicate more freely by voice. Through the dual microphone array, accurately calculate the position of the caller, protect the main direction of the target speech while removing all kinds of interference noise in the environment.

3.DSP denoise

DSP is a short version in English (digital signal processing). Mainly for high and low frequency noise. The working principle is that the microphone collects the external ambient noise, and then the system reproduces a reverse sound wave equal to the external ambient noise to offset the noise to achieve better noise reduction. The principle of DSP noise reduction is similar to ANC noise reduction. However, DSP reduces noise and cancels directly inside the system.

4.CVC denoise

CVC (Clear Voice Capture) is the call software noise reduction technology. Mainly for the echo generated during the call. Through the full-duplex microphone noise cancellation software, which provides call echo and environmental noise cancellation function, it is the most advanced noise reduction technology in Bluetooth call earphones.