Voices, Speech category, VoiceOver Utility on Mac
Use the Voices pane of the Speech category in VoiceOver Utility to mute speech and customize voice settings for your default language and additional languages.
To open VoiceOver Utility, press Command-F5 to turn VoiceOver on, then press VO-F8.
Note: VO represents the VoiceOver modifier. See Use the VoiceOver modifier.
Turn off VoiceOver speech. This option doesn’t affect VoiceOver sound effects or the audio of other apps.
Choose a default voice for VoiceOver, such as Samantha.
To select from more voices, choose Manage Voices, then select the voices. Some voices must be downloaded; make sure you’re connected to the internet.
Enter or set the speed at which the voice speaks.
Set additional options for the default voice:
Pitch: How high or low the voice speaks.
Volume: How loudly or softly the voice speaks.
To set voices and options for specific items, such as status or attributes, click the “Additional voice options” button .
Add a language, then choose and customize the voice you want VoiceOver to use when reading in that language.
If VoiceOver detects that a language has been associated with text that it’s reading, it automatically switches to another voice and reads the text in that language.
Remove a language you added.