People tend to listen to music via earphones at a volume that may be actually doing them harm. I know this because, aside from the published concerns of audiologists, I can often hear their choice of listening across a noisy train carriage.
This morning, it was some banker tuned to Duran Duran, but even real music can be intrusive when you’re only getting the tinniest of high frequencies which have escaped from the foam earbuds.
Today’s invention is simply to incorporate a small microphone in one earpiece. This would register the sound level emitted and reduce the volume -so gradually as to be imperceptible to the (intended) listener.
Obviously the noise-crazed, volume addicts may override the mic, but this approach would reassure the parents of kids who are still in the early stages of deafening themselves.