Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...

MENLO PARK, Calif. (KGO) -- If you enjoy all the live performances in the Bay Area, you are no doubt grateful for the gift of sound. One Bay Area company is hoping to restore that gift to thousands of ...

Surface acoustic wave (SAW) filters already fill our mobile devices, but a new breakthrough finds a way to make them smaller, potentially leading to even more compact devices.

You can hear sound, of course, but what if you could see it with a laser? That’s what [Goosetopherson] thought about, and thus a new project that you can see in the video below was born. The heart of ...

Here’s a shower thought: if light and sound both travel as waves, can you make something that works similarly to a laser but uses sound instead of light? It turns out that the answer is “yes”! If you ...

The microsphere, levitated by the dual beam optical tweezer (green), is driven by the active optomechanical system (red) to generate nonlinear phonon lasers (coloured waves). Meanwhile, the injected ...