Ministry of Good IdeasGood idea: Bicycle bells that cut through noise cancelling
More and more pedestrians are walking around with noise cancelling headphones, and regular bike bells just can't get through to them. Collisions between cyclists and distracted pedestrians are on the rise, up 24% in London alone last year. Now researchers at the University of Salford have found a frequency sweet spot between 750 and 780 Hz that slips past ANC algorithms. A new bell called the DuoBell uses that gap, adding a second resonator and irregular strike patterns that the headphone software simply can't suppress fast enough. In testing, pedestrians wearing ANC headphones got up to 22 metres of extra reaction distance. It's a fully mechanical, analogue trick that outsmarts digital noise cancellation. Sometimes the simplest solutions are the smartest.
Škoda DuoBell: A bicycle bell that outsmarts even smart headphones - Škoda Storyboard
Pedestrians wearing headphones are exposed to an increased risk of accidents. In an effort to reduce collisions with cyclists, Škoda Auto, in collaboration with scientists, introduces an innovative bicycle bell whose sound can penetrate even active noise cancellation systems. In doing so, it helps prevent injuries to both pedestrians and cyclists.
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