Apple Watch now doubles as a health monitor for hearing due to new noise detection features in watchOS 6. The new Noise app on Apple Watch, after being turned on by the user, can evaluate decibel levels and send alerts when a noisy environment is identified that might affect hearing.
So how accurate is the sound measurement by Apple Watch? The new Noise app was tested by one Apple Watch client who works as a test stand operator for a nuclear power plant.
They compared the current decibel levels detected by the Apple Watch with the outcomes recorded by an EXTECH sound level meter after their Apple Watch with noise alerts switched on detected a noisy environment while a engine was running.
Apple Watch recorded reading 88dB while 88.9dB was recorded by the dedicated noise level measurement tool. The findings were within a range of 1% and, as the Apple Watch client explains, meter readings with differences of 5% are often accepted
Their taking? The Apple Watch Noise app is amazingly accurate (as compared to the heart rate sensor), and noise alerts will be useful to know when to use ear protection. Check Reddit’s complete description.
WatchOS 6 introduces Apple Watch Series 4 and Series 5 with the latest Noise app. For Apple Watch Series 3 and Series 1 and 2, watchOS 6 is also available, but the Noise app will be exclusive to Series 4 and newer.