In this episode, Thomas Domville shows us how to change the speaking rate for Siri on iOS and iPadOS. This feature allows you to adjust the speed at which Siri speaks, which can be helpful if you find Siri's default speaking rate too fast or too slow.
To change the speaking rate for Siri, Go to Settings > Accessibility > Siri, and adjust the slider under the "Speaking rate" heading to your desired speed.
Once you have changed the speaking rate for Siri, you can test it out by asking a question or giving it a command. Siri will now speak at the speed that you have set.