In the United States, the default Siri voice is an American female voice, but if you've never delved into Siri's settings you might not know that you can change that voice to something else that you might prefer more.
- Open up the Settings app on iPhone or iPad.
- Select "Siri & Search."
- Choose "Siri Voice."
- Tap an option to hear an audio demonstration of what the voice sounds like.
- Leave the option checked to select it and exit out of the Settings app.
These settings are available in all countries where Siri can be used, but not all options may be available in all countries. The voices you have access to will depend on where you live and the language your iOS device is set to.
In the United States with an iPhone set to the English language, you can choose from an American, Australian, or British accent in either a male or a female voice.
If you use Siri on a Mac, you can also change the voice there. Just open up System Preferences, choose the Siri option, and use the dropdown menu under "Siri Voice" to choose something new.