iPhones could in future automatically sound louder or quieter notification alerts depending on the level of background noise. A patent application published today describes how both an iPhone and Apple Watch could periodically measure ambient sound levels, adjusting notification volumes to an appropriate level.

The patent notes that while users can manually adjust the volume of alerts, many don’t do so because they forget or because it’s too much hassle. The patent suggests that the primary sound reading would be taken from the Apple Watch (aka ‘a wearable device’) …

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