Noise Pollutions

Humans suffer from many kinds of noise pollutions.

We can reduce noise pollutions by using Active Noise Control(ANC) technology.

Road Noise	Apartment Noise Map	Motocycle Noise	Train Noise
Airport Noise	Airport Noise Map	Machinery Noise	Highway Noise

Human Effects of Noise Pollution

• Road Noise impairs memory and attention interfere with overall cognitive development [PLOS ONE 2022 June 3 ]
• Prolonged exposure to noise pollution causes an increase in inflammatory signaling in the setting of hypertension [FASEB Journal 17 April 2020]
• Noise pollution impacts millions of people on a daily basis. The most common health problem it causes is Noise Induced Hearing Loss (NIHL). Exposure to loud noise can also cause high blood pressure, heart disease, sleep disturbances, and stress. These health problems can affect all age groups, especially children. Many children who live near noisy airports or streets have been found to suffer from stress and other problems, such as impairments in memory, attention level, and reading skill. [National Geographic]

Active Noise Control(ANC)

Principle of ANC: Generate inverse-phased anti-noise signal and superpose at acoustic domain resulting attenuation of noise level.

"Fight Noise with Noise!"

ANC Performance Test

We can not stop the generation of noise pollutions.
But, We can reduce noise level as below video (model KAN23 test video, Teczang co.). Click the video!

KAN23 ANC Performance Test screen shot(Red line= no ANC, Yellow line= with ANC)

430Hz Tone Noise(32dB reduce)

Road Noise(5~10dB reduce)

Kitchenhood noise(5~10dB reduce)

Tiller noise(5~10dB reduce)