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Auditory Icons: Credit card beeps to driverless car melodies
Twenty Thousand Hertz
Introduction
A good device sound is satisfying, and a bad one can stress you out. If we want the devices we use every day to sound good, there are actually some pretty concrete ways to do that. Back in October 2015, if you were shopping in the United States, you might have heard something like this. The US was transitioning credit and debit cards away from magnetic strips, those black stripes along the back of your cards, over to chip cards.
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