Skoda developed a bicycle bell that's meant to get past your ANC headphones: here's how it works

Skoda DuoBell on a bicycle riding through the streets of London.

Skoda, mostly known for its cars, has developed the DuoBell, a mechanical bicycle bell designed specifically to be heard by those using noise cancelling headphones. The bell hits a frequency "gap" between 750Hz and 780Hz where active noise cancelling algorithms are the least effective.

For bicyclists in urban areas, it can be dangerous to avoid headphone wearing pedestrians, as most of the best headphones feature some kind of ANC. This leads to collisions and injuries.