I always assumed that the recognisable 'whoosh' sound a plane or helicopter makes when passing overhead simply comes from the famous...

I can't remember how I first came across these near-ultrasonic 'beacons' ubiquitous in PA systems. I might have been scrolling t...

I had a dream one night where a blackbird was talking in human language. When I woke up there was actually a blackbird singing outside the w...

A little music project I was writing required a melody be played on a music box. However, the paper-programmable music box I had (pictured) ...

Would anyone notice if a referee's whistle transmitted a secret data burst? I do really follow the game. But every time the pea whis...

A periodically appearing low-frequency tinnitus is one of my least favorite signals. A doctor's visit only resulted in a WONTFIX and ...

One of the sounds of my childhood was the 15.6 kHz noise of the vibrating television flyback transformer , caused by a phenomenon known as...