Acoustic frequency filters, which convert electrical signals into miniaturized sound waves, separate the different frequency ...

Stylolites — irregular seams that occur in limestone — have been found to affect how acoustic waves move through rock samples. Laboratory-based insights from KAUST researchers offer an improved ...

It is widely thought that otoacoustic emissions—sounds generated by the cochlea—propagate along the basilar membrane as backward-traveling waves to the middle ear and become acoustic emissions in the ...

In a breakthrough experiment, physicist and engineers have shown that it is possible to limit the movement of sound to a single direction without interruption even when there are deformations along ...

SIAM Journal on Applied Mathematics, Vol. 79, No. 6 (2019), pp. 2663-2687 (25 pages) We analyze sound propagation in a waveguide filled with a random medium modeled by small-amplitude spatial and ...

Flexible, layered materials textured with nanoscale wrinkles could provide a new way of controlling the wavelengths and distribution of waves, whether of sound or light. The new method could ...

A research team at City University of Hong Kong (CityU) has discovered a new type of sound wave: the airborne sound wave vibrates transversely and carries both rotation and orbital angular momentum ...

Be it water, light or sound: waves usually propagate in the same way forwards as in the backward direction. As a consequence, when we are speaking to someone standing some distance away from us, that ...