environmentalSoundReduction
A quantity sample type that measures the difference in sound intensity when wearing headphones that lower environmental sound levels.
Declaration
static let environmentalSoundReduction: HKQuantityTypeIdentifierDiscussion
These samples use sound pressure units (described in HKUnit). They measure discrete values of the equivalent continuous sound pressure level, described in HKQuantityAggregationStyle.discreteEquivalentContinuousLevel. Environmental sound reduction values are automatically collected when wearing supported headphones.