@class NSDate; @interface HDDemoDataAudioExposureSampleGenerator : HDDemoDataBaseSampleGenerator { BOOL _didGenerateEnvironmentalAudioExposureSamples; BOOL _didGenerateHeadphoneAudioExposureSamples; double _nextEnvironmentalAudioExposureSampleTime; NSDate *_lastEnvironmentalSampleEndDate; double _nextHeadphoneAudioExposureSampleTime; NSDate *_lastHeadphoneSampleEndDate; } + (BOOL)supportsSecureCoding; - (id)init; - (void)encodeWithCoder:(id)a0; - (void).cxx_destruct; - (id)initWithCoder:(id)a0; - (void)generateObjectsForDemoPerson:(id)a0 fromTime:(double)a1 toTime:(double)a2 currentDate:(id)a3 objectCollection:(id)a4; @end