Microphone Not Working on Mac
macOS handles microphone permission per application, which makes the fix precise once you know where to look. Here is the order that resolves it fastest.
Waveform
Spectrum
Start here
macOS is stricter about microphone access than Windows, and that strictness is usually the answer. Every application must be granted permission individually, and an app that was working can lose that permission after an update or after being moved.
Start with the test at the top of this page. If the meter moves here, your hardware and drivers are fine and the problem lives in one specific app's permissions. If nothing moves here either, work through the whole list.
Fixes, in the order to try them
Grant microphone permission
Open System Settings, go to Privacy & Security, then Microphone. You will see a list of applications with a switch beside each. Turn on the one you need. If your browser is not in the list at all, it has never requested access — visit a page that asks for the microphone and the prompt will appear. On older macOS versions this lives in System Preferences, Security & Privacy, Privacy tab.
Choose the right input device
Open System Settings, go to Sound, then the Input tab. Select the microphone you are speaking into and watch the Input level meter as you talk. On a MacBook the built-in option is usually named “MacBook Pro Microphone” or similar; a headset or interface appears by its own name.
Raise the input volume
On the same Input tab, drag the Input volume slider towards the right while speaking. If the meter barely moves at maximum, the source is too quiet — move closer, or check for a gain control on the microphone or interface itself.
Untick “Use ambient noise reduction”
This option appears on the Input tab for the built-in microphone on many Macs. It helps in noisy rooms and can also suppress a quiet voice into silence. Turn it off and test again.
Check Dictation and other apps holding the device
Dictation, Voice Control and screen-recording apps can hold the microphone. Turn Dictation off in System Settings, Keyboard, then quit Zoom, Teams, Discord, OBS and any browser tab that had microphone access. Look in the menu bar for icons indicating an app is still listening.
Check the orange recording indicator
macOS shows a small orange dot in the menu bar whenever the microphone is active. If it is absent while you are testing, no application has actually opened the microphone, which points at permission rather than hardware. If it is present but you get silence, the device is open but delivering nothing.
Reset the audio daemon
Open Terminal from Applications, Utilities, and run: sudo killall coreaudiod — then enter your password. The audio system restarts within a few seconds and the screen may flicker. This clears a surprising number of stuck-device problems without a reboot.
Test in another user account
Create a new user in System Settings, Users & Groups, log into it, and test the microphone there. If it works, the fault is in your account's settings rather than the hardware, and a permissions reset for the affected app will fix it.
Why the orange dot is the fastest diagnostic on a Mac
Since macOS Monterey a small orange dot appears in the menu bar whenever any application is using the microphone, and it cannot be disabled by software. That makes it a trustworthy signal.
If you press start on a microphone test and no dot appears, the microphone was never opened — the problem is permission or device selection, not the hardware. If the dot appears and you still get silence, the device opened successfully and something downstream is wrong: the wrong input, a muted level, or noise reduction removing the signal. Clicking the Control Centre icon shows exactly which application is using it.
AirPods and Bluetooth headsets on macOS
When AirPods or any Bluetooth headset is used as a microphone, macOS switches the connection to a low-bandwidth mode and audio quality drops noticeably in both directions. This is a limitation of the Bluetooth profile rather than a fault, and it affects every wireless headset.
If you want good sound in both directions, use the AirPods for listening and a different microphone for speaking, selected separately on the Input and Output tabs. If AirPods do not appear as an input at all, forget the device in Bluetooth settings and pair again.
External interfaces and aggregate devices
Audio interfaces sometimes present several inputs under one device name, and macOS captures only the first channel. If your microphone is plugged into input 2 of a two-channel interface, the system may be listening to the silent input 1.
Open Audio MIDI Setup from Applications, Utilities, select the interface, and check the channel configuration. This is also where an Aggregate Device can be built if you need to combine inputs, though an aggregate that includes a disconnected device will fail silently — a common cause of a setup that used to work and suddenly does not.
Other fix guides
If this was not your problem, one of these probably is. Each guide covers a different platform or application, with the exact settings path for that one:
Microphone Not Working on Mac — FAQ
How do I give an app microphone permission on Mac?
System Settings, Privacy & Security, Microphone, then turn on the switch beside the application. On older versions it is System Preferences, Security & Privacy, Privacy tab, Microphone.
Why is my Mac microphone so quiet?
Raise the Input volume slider in System Settings, Sound, Input, and untick “Use ambient noise reduction”. If it is still quiet, the source level is too low and the microphone or interface needs more gain.
What does the orange dot in the menu bar mean?
An application is using your microphone. Click the Control Centre icon to see which one. It cannot be turned off, which makes it a reliable indicator.
Does killall coreaudiod delete anything?
No. It restarts the audio service. Sound may cut out briefly and then return, and no settings or files are affected.
Why do my AirPods sound bad on calls?
Using them as a microphone forces Bluetooth into a low-quality mode that affects playback as well. Selecting a different input device restores full playback quality.
The mic works on this page but not in Zoom.
Zoom needs its own permission in Privacy & Security, and it also has its own input selector. Grant permission, then choose the device inside Zoom's audio settings.
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