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Don’t expect to play a game of Marco Polo by shouting from beneath the pool’s surface. No one will hear you because, normally, only about 0.1 percent of sound is transmitted from water to the air.

The fabric contains a "piezoelectric" material woven through the silk ... mechanism of vibration-mediated suppression dampened sound transmission by up to 75%. The current design works for certain ...

Piezoelectric materials produce an electrical signal ... In vibration-mediated suppression mode, the fabric could reduce sound transmission up to 75 percent. These results were only possible ...

LAS VEGAS — Nissan Motor Co. showcased a new lightweight, soundproofing material at the CES trade ... to control air vibrations that limit the transmission of wide frequency band noise (500 ...

the researchers found that it increased sound transmission to the extent that up to 30 percent of waves got through. The device could theoretically be used to help with human communications ...

Acoustic diode, providing one-way transmission of sound, promises to improve ultrasound imaging. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2012 / 05 ...

Researchers have extended the concept of topological insulation to materials that only allow certain light or sound waves to propagate on their surfaces. Specifically, these materials may break a ...

Automobile manufacturers, for years, have added some sort of sound damping material to the interior ... vibration and heat transfer from the engine/transmission compartment. Use a roller to ...