But a hackier way would be to build a parametric speaker that focuses soundwaves into a narrow beam like [Shane] did with this ultrasonic sound gun. As the directivity of a soundwave depends on ...

This Denon Soundbar pumps out 120Watt sound with two main channels and a built-in bass channel. Connecting with Bluetooth and ...

If two microphones, each having a figure-of-eight or cardioid directional characteristic ... second-order pressure gradient in the incident sound wave; the directivity of such a system will ...