CCTV News: There is a "China Sound Valley" in Suzhou, Jiangsu, where sound not only transmits information but also becomes a new engine for technological innovation.

Entering the China Sound Valley located in Changshu, Suzhou, the reporter discovered the mystery of "controlling" sound here. This is simulating a noisy environment, and now commonly used sound-absorbing cotton on the market can reduce noise to some extent, but the effect is not significant. Using the latest noise reducing material developed by Shenggu, it instantly becomes quiet. The secret of its ability to silence lies in its honeycomb like structure on the surface, which resonates when sound enters these cavities, thereby reducing its energy and achieving a silent effect.

This type of super structured sound-absorbing material can be made into a "silent cabin" and used for scenarios such as conference rooms. In the Sound Valley, the reporter also discovered a more magical cabin.

It's very noisy here now, simulating the environment of a truck cab. Just press the noise reduction button and it will quickly become quiet. However, this is not using sound-absorbing or soundproof materials, but through active noise reduction, releasing a sound wave with the same frequency and opposite phase as the noise, thus achieving noise reduction effect.

With the support of new materials and technologies, sound is no longer a vague and elusive state, but has become more controllable and perceptible. This device is called an "acoustic camera" and can "take photos" of sound. It can recognize low-frequency sound sources such as ultrasound that humans cannot hear, and turn them into images to accurately locate them.

More and more acoustic intelligent terminals like this are stepping out of the sound valley and entering the production and life of ordinary people. On this square, the reporter saw that there were multiple square dance teams dancing at the same time, but they could still dance independently without affecting each other. What is the secret behind this?

The music for square dancing comes from this speaker, but when you walk to its side, you immediately feel that the sound is much quieter. This is actually a directional sound system, where sound can be clearly heard only in the limited space in front of it, minimizing its impact on the surrounding environment.

At present, in this 13 square kilometer acoustic innovation zone, the local area is working together with multiple universities and research institutes such as Nanjing University to create an industrial innovation cluster led by acoustic technology. Over 150 acoustic innovation projects are gathered here, where acoustic technology and interdisciplinary integration are achieved, empowering high-end industries such as automotive manufacturing, medical equipment, and marine communication, accelerating the landing of more and more application scenarios.

Acoustic technology assists in noise pollution control, making cities more peaceful

The new technologies and products nurtured by Shenggu are constantly expanding people's understanding and application of sound. Based on the technological advantages of Shenggu, the local area is exploring new paths for noise pollution control and has also been selected as a pilot city for the national "Urban Noise Map Application".

A white sedan honked its horn while passing through a section where honking is prohibited. The honking sound, which lasted only 1 second, was accurately detected and captured by the sound detection equipment above.