Different Noise Cancellation Technologies You Should Know

Noise cancellation function is important for headphones, one is to reduce noise and avoid over-amplification of volume, thus reducing damage to the ear. The second is to filter the noise thus improving the sound quality and call quality.

Noise cancellation can be divided into passive noise cancellation and active noise cancellation.

Passive noise reduction is also known as physical noise reduction, passive noise reduction refers to the use of physical properties to isolate the external noise from the ear, mainly through the headband of the headset designed to be tighter, the ear cup cavity for acoustic optimization, ear cups put on the internal sound-absorbing materials ...... and so on to achieve the physical sound insulation of the headset. Passive noise cancellation is very effective in isolating high frequency sounds (such as human voice), which can generally reduce the noise by about 15-20dB.

Active noise cancellation is the business in the promotion of headphones noise reduction function will be the main ANC, ENC, CVC, DSP and other noise reduction technology. Do you know the difference between them?

The difference between different noise cancellation technologies

✔️ANC noise cancellation

ANC noise cancellation (Active Noise Control, active noise cancellation) works by the microphone collecting external environmental noise, and then the system transforms into an inverse sound wave added to the speaker end, the final sound heard by the human ear is: ambient noise + inverse ambient noise, the superposition of two kinds of noise so as to achieve sensory noise reduction, the beneficiary is himself.

Active noise cancellation is divided into feedforward active noise cancellation and feedback active noise cancellation according to the location of the pickup microphone.

✔️ENC noise reduction

ENC (Environmental Noise Cancellation), can effectively suppress 90% of reverse environmental noise, thus reducing environmental noise by up to 35dB or more, allowing gamers to communicate more freely with their voice. Through the dual microphone array, the orientation of the caller's speech is accurately calculated, and various interfering noises in the environment are removed while protecting the target voice in the main direction.

✔️DSP noise reduction

DSP is the abbreviation of English (digital signal processing). It is mainly for high and low frequency noise. The principle of DSP noise reduction is similar to that of ANC noise reduction. However, DSP noise reduction neutralizes and cancels the noise directly within the system.

✔️CVC noise reduction

CVC (Clear Voice Capture) is a call software noise reduction technology. It mainly targets the echoes generated during a call. Through the full-duplex microphone noise cancellation software, to provide the call echo and environmental noise cancellation function, is currently the most advanced noise reduction technology in Bluetooth talking headset.

DSP technology (elimination of external noise) is mainly benefited by the headset user himself, while CVC (elimination of echo) mainly benefits the other party to the call.

Last few words

The above is the common headset noise reduction technology or way, for more questions, please feel free to contact us.