A Reddit user discovered an important innovation for the original AirPods Pro in the beta version of iOS 16.1.
If you have 5A304A beta firmware for the headphones installed, you will be able to activate the adaptive transparency mode from AirPods Pro 2 in your iPhone settings. It will allow the AirPods to drown out loud noises like sirens, construction work, and so on without blocking out all the noise.
New AirPods Pro 2
Apple AirPods Pro (2nd Generation) Wireless Earbuds with MagSafe Charging Case. Active Noise Cancelling, Personalized Spatial Audio, Customizable Fit, Bluetooth Headphones for iPhone