Engineering

A screw that can halve the level of perceived sound

Could noisy neighbors become a thing of the past? If you are disturbed by crashes, bangs, and muffled voices from next door, then you are not alone, but a Malmö University researcher thinks the answer is as simple as a screw.

Automotive

Breakthrough in faster-than-sound jet engines

Almost 75 years ago, U.S. Air Force pilot Chuck Yeager became the first person to fly faster than the speed of sound. Engineers have been pushing the boundaries of ultrafast flight ever since, attaining speeds most of us ...

Internet

Google releases Blob Opera just in time for the holidays

Google has released a new app called blob Opera—a machine learning application that allows songwriters of all skill levels to compose songs—operas or otherwise—performed onscreen by four singing "blobs." In announcing ...

Engineering

3-D printed active metamaterials for sound and vibration control

Researchers have been pushing the capabilities of materials by carefully designing precise structures that exhibit abnormal properties that can control acoustic or optical waves. However, these metamaterials are constructed ...

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Sound

Sound is a travelling wave which is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations.

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