TL;DRSkoda has developed the DuoBell, a mechanical bicycle bell designed specifically to be heard through noise canceling headphones.Research identified a frequency “gap” between 750Hz and 780Hz where ANC algorithms are least effective at suppressing external noise.The bell also uses a dual-resonator system and an irregular striking mechanism, helping prevent ANC algorithms from processing and blocking the sound.Active Noise Cancellation (ANC) has gotten really good on headphones and earphones. As more and more users upgrade to newer products with even more effective ANC, there’s a growing second-order effect: people are becoming inattentive, especially when walking on the street, increasing their chances of colliding with cyclists whose mechanical bells are no longer effective. Czech car manufacturer Skoda (which started off by manufacturing bicycles) is tackling the ANC menace with the new Skoda DuoBell, the first bicycle bell designed to penetrate ANC on headphones.Don’t want to miss the best from Android Authority?