How to turn off audio ducking on a Mac during calls
macOS has no setting that turns off call audio ducking. When a call app starts its voice processing, macOS lowers every other sound by about 20 dB until the call ends. The VoiceOver “audio ducking” checkbox is a different feature and doesn't change it. To keep music and video at full volume, the call has to play through its own output device, which is what CallLane sets up for you.
What audio ducking is
Ducking means one sound gets quieter so another one is easier to hear. On a Mac, call apps ask macOS for voice processing: echo cancellation and noise reduction for your mic. When they do, macOS also turns everything else down. Spotify, YouTube, a film in QuickTime, a game. It all drops to roughly a tenth of its loudness, about 20 dB, and stays there until the call hangs up.
You'll see it with FaceTime, WhatsApp, Zoom, Microsoft Teams, Slack huddles and Discord. It's built into macOS, so every app that uses Apple's voice processing gets it.
Why the usual fixes don't work
- The VoiceOver setting. Lots of answers online say to untick Audio ducking in VoiceOver Utility. That setting only controls whether other sound gets quieter while VoiceOver, the screen reader, is talking (Apple’s description). Calls ignore it. More on that mix-up.
- Turning the volume up. The system volume raises the call and the music together, so the gap between them stays the same.
- A setting in the call app. Since macOS 14, Apple lets each app choose how much it ducks, but most call apps keep the default and don’t give you a switch.
Fix 1: send the call to a different output
macOS ducks the output device that the call is using. So if the call plays on one device and your music plays on another, the music keeps its volume. You can try it by hand: pick your Mac’s built-in speakers as the call app’s speaker and keep your music on your headphones. It works, but the call now comes out of the speakers, and your mic picks it up.
The clean version needs a virtual audio device for the call and something that forwards that device to your headphones. People build this with BlackHole and Loopback. It takes some setup, and you redo it when your headphones change.
Here’s where each call app keeps its speaker setting:
| App | Where to pick the speaker and mic |
|---|---|
| FaceTime | Menu bar, Video, then Output (and Microphone) |
| Settings, Calls, then Speaker | |
| Zoom | Settings, Audio, then Speaker |
| Microsoft Teams | Settings, Devices, then Speaker |
| Slack | Preferences, Audio & video, then Speaker |
| Discord | User Settings, Voice & Video, then Output Device |
Fix 2: let CallLane do it
I built CallLane because this kept ruining my FaceTime film nights. It installs a small audio device called CallLane. You pick it as the speaker in each call app once, and CallLane forwards it to whatever headphones or speakers you’re using. macOS ducks the CallLane device and nothing else, so your music stays loud and the call stays where you set it.
It also fixes the second call problem on Bluetooth headphones: it keeps the input on your Mac’s mic so your AirPods don’t drop to headset quality. See why AirPods sound bad on calls.
CallLane runs on macOS 14 or later, on Apple silicon and Intel. It's a one-time purchase with a 14-day refund.
If the ducking doesn’t go away after the call
Sometimes macOS keeps everything quiet after you hang up. Restarting the audio service fixes it without a reboot. Open Terminal and run sudo killall coreaudiod. Sound cuts out for a second or two and comes back at normal volume.
Questions
Can I turn off audio ducking in macOS System Settings?
No. macOS has no switch for the ducking that happens during calls. The only audio ducking checkbox is in VoiceOver Utility, and it only applies to VoiceOver speech.
How much does macOS lower other audio during a call?
About 20 dB, which sounds like roughly a tenth of the original loudness. It lasts until the call ends.
Which apps cause audio ducking on a Mac?
Any call app that uses Apple's voice processing: FaceTime, WhatsApp, Zoom, Microsoft Teams, Slack huddles and Discord, among others.
Is there an app that stops audio ducking on a Mac?
Yes. CallLane is a macOS menu-bar app that gives call apps their own audio device, so macOS ducks only the call. It also keeps AirPods at full quality during calls. It's a one-time purchase.