AirPods are wireless Bluetooth earbuds created by Apple. They were first released on December 13, 2016 and are sold alongside the premium AirPods Pro.
In addition to playing audio, AirPods feature a built-in microphone that filters out background noise, which allows taking phone calls and talking to Apple’s digital assistant, Siri. Additionally, built-in accelerometers and optical sensors can detect taps (e.g. double-tap to pause audio) and in-ear placement, which enables automatic pausing when they are taken out of the ears.
The AirPods Pro received a firmware update shortly after the release on December 16 but a number of users complained about worse noise cancellation. While some suspected it might be a subjective thing the folks over at Rtings updated their review and confirmed the worsened noise-canceling capabilities.
More specifically, the AirPods Pro show a significant drop in isolation in the bass-range, meaning they won’t be able to block the sound from the engine of an airplane as well as before, for example. Which is probably the most common use case of these earbuds.
However, the review also found a significant improvement in overall frequency response and bass accuracy or in other words – the new firmware update improves sound accuracy across the board.
Probably Apple is working on a fix as the company pulled the 2C54 update a couple of days after the December 16 rollout.
You can go check if you are still on the older 2B588 firmware
Go to Settings > General > About > AirPods Pro.