In everyday life, designing spaces that both let air flow and absorb sound can be a tricky balancing act. Usually, materials that allow air to pass through—like vents—also let sound escape, making it ...

From echoing hallways and idling buses to boisterous band practices and shop classes, schools have long been known as noisy environments. Beyond the sounds produced by occupants and vehicles, ...

This latest accomplishment joins the company’s previously secured ASTM certifications, enhancing the features and expanding the end-uses for its microalgae-based bio-cement and bio-concrete. BOULDER, ...

Scientists show that a thin layer of plasma, created by ionizing air, could be promising as an active sound absorber, with applications in noise control and room acoustics. Did you know that wires can ...

Noise is a dangerous worldwide environmental pollutant: at normal levels found in cities it can induce annoyance, stress and fluctuations in sleep patterns which in turn increase the risk of type-2 ...

The breakthrough material reduces a noise level by 100% more efficient comparing to standard analogs, cutting the level of noise transmission by 20-22 dB. The new foam reacts to sound waves not only ...

Engineers have demonstrated that a fully open ventilation channel can absorb most incoming sound across a broad range of frequencies. That result breaks a long-standing tradeoff between airflow and ...

Anybody can podcast, do voice over, or record themselves singing or playing an instrument, but there is nothing worse that outside noise ruining what could have been a masterpiece. We've searched for ...

The research team from The University of Hong Kong presented their findings at the Phononics 2025: 7th International Conference on Phononic Crystals/Metamaterials, Phonon Transport, Topological ...