The difference between three-dimensional active noise reduction technology and single-point active noise reduction technology Ansheng Technology completed tens of millions of A round of financing

Beijing Ansheng Technology has successfully completed its A-round funding, securing tens of millions in investment from Northern Light Venture Capital and Temasek's wholly-owned subsidiary, Xiangfeng Investment. As a leading global provider of active three-dimensional space noise reduction solutions, the company has been supported by top-tier institutions such as Jiuhe Venture Capital, Rich Capital, Taihuo Technology, and Tycoon since its founding in 2016. Liu Yifan, founder and CEO of Ansheng Technology, emphasized that the company will focus on product development, marketing, and team expansion following this round of funding. In 2017, Ansheng signed a strategic cooperation agreement with Yunmi Technology, a key player in the Xiaomi ecosystem, to develop an active noise reduction system for range hoods. The company also collaborates with major home appliance brands like Haier, Dreamer Fresh Air, and AIRMX Fresh Air. Xu Yinhai, co-founder of Ansheng Technology, explained that unlike single-point active noise reduction technology, three-dimensional active noise reduction requires comprehensive analysis and modeling of the entire sound field. This allows the noise separation algorithm to effectively tackle noise issues in complex environments such as homes and vehicles. Noise is not just an annoyance; it can have serious long-term effects on the central nervous system, impacting overall health. Active noise reduction technology was developed to address these concerns. Creating a quiet and comfortable living and driving environment is a fundamental desire for a better quality of life. With the advancement of ANC technology and its integration into consumer products, it is becoming one of the most effective tools in noise control. Beijing Ansheng Technology is the first domestic solution provider specializing in three-dimensional active noise reduction. Using advanced digital signal processing and acoustic holography, the company offers comprehensive sound quality improvement solutions for manufacturers. **The Difference Between 3D Active Noise Reduction and Single-Point Active Noise Reduction** Traditional noise reduction methods rely on passive techniques, such as sound absorption, which often fail to reduce low-frequency noise and can negatively affect performance in exhaust appliances. In contrast, active noise reduction (ANC) uses microphones to detect noise waves and generate inverse sound waves that cancel out the original noise during propagation. ANC technology is divided into two main types: single-point and three-dimensional. Single-point ANC is commonly found in noise-canceling headphones, targeting only the user’s ears. However, three-dimensional ANC requires advanced algorithms and deep acoustic knowledge to analyze and simulate the entire sound field, allowing for noise reduction across larger areas. This makes it suitable for applications like automotive, aviation, high-speed rail, and home appliances. **Core Technology from the Ray W. Herrick Laboratory** Ansheng’s core technology originates from the renowned Ray W. Herrick Laboratory in the U.S., known for its work with industry leaders like Rolls-Royce, General Motors, Ford, and Midea. Ansheng’s unique algorithm significantly improves calculation efficiency and expands the noise reduction frequency range up to 2100Hz—more than double the industry standard. Their noise reduction solutions for household appliances, such as AS-Hood, AS-Fan, and AS-Air, help resolve the conflict between air volume and noise in devices like range hoods and air purifiers. **Future Prospects of 3D Active Noise Reduction Technology** The introduction of 3D active noise reduction into industries like automotive and home appliances promises a more comfortable user experience. It also helps reduce long-term health risks associated with noise exposure. Looking ahead, products equipped with Ansheng’s technology are expected to become increasingly common in daily life. **A Team with Strong Industry Backgrounds** Ansheng’s founding team comes from prestigious companies like Huawei and LeTV, as well as academic institutions such as Purdue University. Liu Yifan, the CEO, graduated from Beijing University of Aeronautics and Astronautics and previously worked at Huawei. His twin brother, Liu Yangfan, serves as CTO and is a research professor at Purdue. He developed a high-order multi-level sub-sound field simulation model, earning recognition as a reviewer for *Applied Acoustics*, one of the most respected journals in acoustics. Xu Yinhai, another co-founder, brings extensive experience from LeTV, while Shi Rui, the market partner, has strong industry insights from his time at Huawei. Together, they form a powerful team driving innovation in active noise reduction.

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