The difference between 3D active noise reduction technology and single-point active noise reduction technology

Different from single-point active noise reduction technology, three-dimensional space active noise reduction must consider the analysis and modeling of the three-dimensional sound field. Ansheng Technology uses the world's most advanced sound field simulation and restoration technology and unique noise separation algorithm to effectively deal with noise problems in three-dimensional space fields such as home appliances and automobiles.

Noise affects the central nervous system of the brain and threatens health over time, so active noise reduction technology comes into being

Having a quiet and warm home and driving environment is one of the basic wishes of people to achieve a better life. In fact, the impact of noise on humans is not limited to subjective feelings. Living in a noisy environment for a long time, the noise will act on the central nervous system of the brain through the auditory organs, thus affecting the body tissues. With the development of active noise reduction technology and its application in various consumer products, it will become one of the most effective means to solve the noise problem.

As the first domestic solution provider focusing on three-dimensional active noise reduction technology, Beijing Ansheng Technology Co., Ltd. uses internationally leading digital signal processing technology and acoustic holography technology to provide manufacturers with a full range of sound quality improvement solutions.

The difference between 3D active noise reduction technology and single-point active noise reduction technology

Traditional noise reduction methods are called passive noise reduction, which refers to the method of blocking and absorbing sound to achieve noise reduction. However, the heavy acoustic package is not only useless for the annoying low-frequency noise, but also affects the air volume and heat dissipation performance of exhaust appliances. Active noise reduction (ANC) technology refers to the technology that uses microphones to listen to noise sound waves and emit reverse sound waves after processing. The two interfere with each other during the propagation process to achieve noise reduction.

Technical diagram

Active noise reduction technology is divided into single-point active noise reduction technology and three-dimensional space active noise reduction technology. The main difference in application is that single-point ANC technology only covers the human ear, and requires wearable headphones, earmuffs, etc. as carriers. The active noise reduction headphones that emerge in the market are products of single-point ANC technology.

The three-dimensional active noise reduction technology requires not only excellent active noise reduction algorithm skills, but also a deep acoustic theory background to analyze, simulate and reduce the three-dimensional sound field, so as to achieve the effect of active noise reduction in specific areas without wearing, thus greatly expanding the scope of application. Typical application scenarios include: military industry, aviation, high-speed rail, automobiles, home appliances, IT, industry, etc.