Mac dictation not working? Check the microphone first

When Mac dictation stops working, check the microphone first: it may be listening to AirPods, a display or a mic that is no longer plugged in. Open System Settings, then Keyboard, and look at Dictation’s microphone source. If that is right, work through Apple’s list: Dictation switched on, the right language, the right shortcut, and enough input volume.

Dictation failing looks like a software fault, so people reach for restarts and resets first. Often the software is fine and your words are going into the wrong microphone: one that is muted, too far away, or not there at all. It takes ten seconds to rule out, so it is the first thing to check.

Is dictation listening to the right microphone?

Mac dictation records from the microphone set as its source in System Settings, under Keyboard, then Dictation. Left on Automatic, it follows whatever your Mac has chosen as its sound input, and macOS changes that input on its own whenever a device with a microphone connects. Put AirPods in and dictation starts listening through them; plug in a display or a dock and the input can jump to a microphone you never meant to use. A MacBook’s own microphone also stops being available when the lid is closed, so a Mac used shut on a desk needs another microphone selected. If the source shows a device that is not connected, or one across the room, dictation hears silence or mumbling and looks broken. Pick the microphone you are speaking into, then open Sound, then Input, and watch its level move as you talk.

What else stops Mac dictation working?

If the microphone is right, Apple’s own checklist covers the rest. Work down it in order:

1. Dictation is switched on in System Settings, under Keyboard.
2. The language and region are right. Dictation listens for the language you chose.
3. You are using the right shortcut. The Dictation shortcut is set in the same place.
4. An external microphone is connected and selected in Sound or Keyboard settings.
5. The input volume is high enough, in System Settings, then Sound, then Input.
6. Nothing is covering the microphone, such as clothing or your hand.
7. The room is not too noisy. Apple suggests a headset microphone in noisy spaces.
8. You are online, if your Mac sends dictation to Apple’s servers rather than handling it on the Mac.

Why does dictation work some days and not others?

Usually because the microphone changes underneath it, and a frequent culprit is Bluetooth. Apple’s support note on Bluetooth headphones explains that when an app uses a Bluetooth headset’s microphone, the connection switches to a second mode and audio quality drops until the microphone is free again. Dictation is exactly that kind of app, so dictating through AirPods gets the reduced mode every time. Wispr Flow’s microphones page adds that Bluetooth earbuds can be slow to connect, may clip your first word, and produce more transcription errors than wired microphones. If dictation is fine at your desk and poor in the afternoon, check whether your AirPods connected in between.

How do I stop my Mac switching to the wrong microphone?

You can fix the input by hand in System Settings, under Sound, then Input, every time it moves. Chorus does it for you. Its Inputs panel in the menu bar lists every microphone your Mac can see and switches the active one with a click or a keyboard shortcut. Its Auto-Switch settings go further: add an input rule such as “when my AirPods are connected, use the desk microphone”, and Chorus applies it the moment the AirPods connect, so they stay in your ears for listening while your words go into the better microphone. Chorus uses the first rule whose devices are all connected, so one list covers every setup you move between.

One limit is worth knowing. Chorus changes your Mac’s default input, the same setting System Settings changes. If Dictation’s microphone source, or a dictation app’s own settings, names one specific microphone, that choice wins, so set it to follow the system input and let Chorus handle the rest. Chorus is $9.99 once for up to three Macs, with a 30-day free trial that needs no account or card details.

Using Wispr Flow, superwhisper or another dictation app?

The same checks apply: the app can only hear the microphone it is given. Most dictation apps have their own microphone setting, and it is worth opening it once to make sure it is either following the system input or set to the microphone you use. If your dictation app also turns your music down while you speak and that stops working on a group of speakers, that has a separate cause, and Chorus’s Dictation Controls handle it.

Frequently asked questions