I was walking through the Rose Garden this afternoon when the Noise app on my Apple Watch triggered a loud environment warning; only I didn't hear anything. Until that is, I listened very carefully and could make out a steady high-pitched whine at the very edge of my hearing. I wonder what frequency the Noise app maxes out at.

https://www.nps.gov/inde/planyourvisit/rosegarden.htm

#Philadelphia #RoseGarden #AppleWatch #NoiseApp #Hearing #LoudEnvironmentAlert

I was walking through the Garden Garden this afternoon when the Noise app on my Apple Watch triggered a loud environment warning; only I didn't hear anything. Until that is, I listened very carefully and could make out a steady high-pitched whine at the very edge of my hearing. I wonder what frequency the Noise app maxes out at.

https://www.nps.gov/inde/planyourvisit/rosegarden.htm

#Philadelphia #RoseGarden #AppleWatch #NoiseApp #Hearing #LoudEnvironmentAlert