Never Miss Your Doorbell While Wearing Headphones on iPhone
Noise-canceling headphones are great for blocking out distractions, but they can also block out sounds you actually need to hear, like a courier at the front door with your all-important package. W...

Source: MacRumors
Noise-canceling headphones are great for blocking out distractions, but they can also block out sounds you actually need to hear, like a courier at the front door with your all-important package. Well, thanks to an Apple accessibility feature, your iPhone can do the listening for you and alert you when your doorbell rings. Meet Sound Recognition, the feature in question that uses your iPhone's microphone to continuously monitor for specific sounds.