Use Dictation on Mac (Mac User Guide)

“Here are some solutions to try: Be sure Dictation is turned on in Keyboard settings.” (Dictation troubleshooting section)

“If you’re using an external microphone, make sure its input volume is sufficient.” (Dictation troubleshooting section)

“If you use Dictation in a noisy environment or a room with excessive echo, it may help to use a headset microphone.” (Troubleshooting section on Dictation (Mac User Guide))

“Choose the correct language and region. Be sure you’re using the correct Dictation keyboard shortcut” (If Dictation on Mac doesn't work as expected)

“Be sure the microphone is not obstructed by objects, such as clothing or your body, while you’re speaking.” (If Dictation on Mac doesn't work as expected)

“processed on your device and not sent to Siri servers” (Internet connection section)

“Position yourself as you would normally use your Mac, then speak clearly at a volume that’s not too quiet or too loud. Avoid background noise.” (If Dictation on Mac doesn't work as expected)

“select the microphone in Sound settings and increase its input volume” (Dictation troubleshooting section (Mac User Guide))

“If your Mac doesn't have an internal microphone, make sure an external microphone is connected to your Mac and selected in Sound or Keyboard settings.” (If Dictation on Mac doesn't work as expected)

“You can check Keyboard settings to see whether you need an internet connection or whether your voice inputs and transcripts for general text Dictation (for example, composing messages and notes, but not dictating in a search box) are processed on your device and not sent to Siri servers.” (Troubleshooting: Dictation does not work as expected)