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Skoda has unveiled the DuoBell, a fully mechanical bike bell engineered to cut through active noise-canceling headphones. The automaker has reinvented the bicycle bell, along with acoustic researchers at the University of Salford, to address a real and growing urban problem: pedestrians so thoroughly cocooned in their ANC bubble that a traditional ring doesn’t reach them.
Over the year, ANC has improved drastically, to the point that ANC-enabled earphones or headphones cut the environmental sounds almost completely. In London alone, up to half of all pedestrians now walk around wearing noise-canceling headphones, and many of these devices, especially the flagship ones, are so good that a conventional bicycle bell cannot penetrate them. With cycling numbers climbing sharply in cities around the world, and ANC getting more accessible, that’s a recipe for collisions. In 2024, incidents between cyclists and inattentive pedestrians in London rose by 24%, no less.This is where it gets clever. Through acoustic testing, researchers pinpointed a narrow “safety gap” in the frequency spectrum, i.e., between 750 and 780 Hz, that ANC filters struggle to suppress. Guess what? The DuoBell is tuned precisely to this range. It also packs a second resonator set to a higher frequency and a specially designed hammer mechanism that delivers rapid, irregular strikes, producing sound patterns that ANC algorithms simply can’t cancel fast enough. The results speak for themselves. Testing showed that pedestrians wearing ANC headphones get up to 22 meters of additional reaction distance when bike riders use DuoBell. The margin in traffic could be the difference between a near miss and something far worse. To me, it’s analog ingenuity beating digital arrogance.
Skoda Skoda Cars Skoda Duobell
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