Researchers at the Swiss Federal Laboratories for Materials Science and Technology (EMPA) in Dübendorf have developed an innovative material aimed at reducing street noise, which currently lacks a specific name. This material not only boasts a notably slim profile but can also be tailored to specific frequency ranges based on the external noise sources and the environment in which it is installed. Composed mainly of a mineral plaster or cement foam, it is engineered to contain pores of varying sizes, allowing for multiple layering techniques to create diverse soundproofing options.

Utilizing a digital model, researchers can simulate and manipulate the acoustic properties of the entire material by adjusting pore sizes, perforation patterns, and layer structures. This enables them to effectively address specific acoustic challenges and optimize the overall performance of the material in diverse settings. For practical applications, the team tested this new material by installing 5.5 cm thick panels to cover a 12-square-meter driveway in Zurich, which opens onto a public street, demonstrating its potential as a viable solution for urban noise pollution.

This development could have significant implications for urban planning and construction as cities grapple with increasing noise levels due to traffic and other external factors. The ability to create a customized soundproofing solution may lead to improved quality of life in urban areas, making spaces more comfortable for residents while also encouraging innovative architectural designs that prioritize noise reduction. The ongoing research and future advancements in this area could further enhance the effectiveness and adaptability of noise-canceling materials in various contexts, contributing to a quieter environment overall.