Open Settings on your iPhone or iPad
Tap Notifications
Tap Announce Notifications
Turn off Announce Notifications
To turn it off for AirPods only, tap Announce Notifications and disable Headphones
Open Control Center
Press and hold the volume control
Tap Announce Notifications to toggle it off
On Apple Watch, open Settings
Tap Notifications
Tap Announce Notifications
Turn off Announce Notifications
On Mac, open System Settings
Click Notifications
Turn off Announce Notifications if available
If needed, open the AirPods settings in Bluetooth
Tap the info button next to your AirPods
Disable Announce Notifications or Siri announcements if shown