The South China Morning Post has reported on a “stun gun” device which claims to neutralise speakers from a distance, in an effort to shut down dance gatherings. The device created a huge stir ...

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 ...

I recently attended a screening of the movie Top Gun: Maverick at New York City’s House of Sound, a showcase for state-of-the-art home theater and the best stereo speakers that was constructed ...