Turn Off Voice Assistant on Apple Mac
VoiceOver, as a voice assistant, provides spoken description of items on the screen. The following are two ways of turning on/off VoiceOver.
Toggle VoiceOver
Use ⌘ Cmd + F5 to toggle on/off VoiceOver.
Enable/disable VoiceOver from the menu
Open System Preferences > Accessibility > VoiceOver. Click to turn if on/off.