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, ...

The bark of larch trees was found to offer the most effective sound absorption Scientists say trees have a role to play in combating noise pollution in urban environments and have identified the best ...

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, ...

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 ...

Many asymmetric absorbers are currently based on a single-port system, where sound enters one side and is absorbed before a rigid wall. In this design, however, light and air are unable to pass ...

A diagram shows some parts of a house that can be sound-proofed. These include the attic, walls, floors and basement. Sound-proofing systems will absorb sound around the house, writes Sandra Natukunda ...