Dictation will not use external microphone

Dictation works fine for me speaking directly into the internal microphone but I cannot seem to get it to work with any external microphone whatsoever. These mics work fine for other applications, and when selected from Preferences > Keyboard > Dictation the little microphone icon on that page does monitor the external mic correctly. However, when I hit the keyboard shortcut to actually use dictation it will always use the internal mic regardless of what mic I have selected. Since I typically work with my mac in clamshell mode this means it's completely non-functional.


Any help troubleshooting this?

MacBook Pro 16″, macOS 10.15

Posted on Jan 12, 2021 11:45 AM

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5 replies

Jan 14, 2021 12:11 PM in response to zhands

Hi zhands,


It seems you're having trouble with Dictation and we can help.


You took some great steps to isolate this issue. Were you following along with this article?

If your Mac doesn’t recognize text and commands you speak


Make sure your microphone is selected in both System Preferences > Sound > Input, as well as in System Preferences > Keyboard > Dictation.


Does any other app recognize your external mic? What if you record in Voice Memos, does that work?


Let us know how that works.


Thanks for using the Apple Support Communities.

Jan 14, 2021 1:42 PM in response to KMB_12

  1. Yes my mic is selected explicitly in both settings. (I'm not using 'automatic')
  2. Yes other apps recognize my mic. QuicktimePlayer, Zoom, GoogleHangouts, Discord, etc


As you can see below even the preferences page for dictation is picking up me speaking (left) but notice the actual mic bubble for dictating in the text document (right) does not recognize any input whatsoever. (there is a graphical blip right when it opens tho)


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Dictation will not use external microphone

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