A new study shows that a monotonic increase in layer-wise acoustic resistance, rather than any specific geometric gradient, ...

THERE are two methods of measuring the amounts of sound absorbed by various materials. One is the reverberation method of W. C. Sabine, in which a specimen of the material to be tested is mounted on ...

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, ...

Commonly considered waste, cigarette filters can be creatively repurposed into sound-absorbing materials that rival the ...

Soundproofing and acoustic materials are used to attenuate, deaden, or control sound and noise levels from machinery and other sources for environmental amelioration and regulatory compliance.

Voices echo too much in a room with exposed concrete walls. The reason for this can actually be explained through calculation ...