Loudspeakers in jet engines

Unless one is attending an aeronautics convention or going on a trip, noise associated with aircraft engines is rarely tolerable. Different means of significantly reducing that noise are being tested by EPFL's Electromagnetics ...

Nanopores underlie our ability to tune in to a single voice

Even in a crowded room full of background noise, the human ear is remarkably adept at tuning in to a single voice—a feat that has proved remarkably difficult for computers to match. A new analysis of the underlying mechanisms, ...

Sonata in LHCb: The sound of antimatter (w/ Video)

In a recent paper the LHCb collaboration at CERN observed two particles changing from matter into antimatter and back again. Now the collaboration has turned that data into sound, so that you can listen to the music of antimatter.

Crickets' calling song hits the high notes

(Phys.org) —Research has detailed how acoustic communication has evolved within a unique species of cricket which exploits extremely high frequency harmonics to interact.

Researchers measure cavitation noise in trees

(Phys.org) —A team of researchers from Grenoble University in France has found that under experimental conditions, roughly half of the noise created by drying wood is due to cavitation. The team made this discovery while ...

How an objective audiometric test can become even more reliable

Not only can the human ear detect sounds, it can also generate them. If the ear hears the two upper tones of a major triad, it produces the fundamental of the chord which can then be measured. This phenomenon, called "otoacoustic ...

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