How to Change the Alert Sound and System Sound Effects on Mac

In macOS, system audio cues provide crucial sensory feedback when interacting with windows, files, and operating system controls. From the familiar error chime when pressing an unassigned hotkey to the audio cues triggered when emptying the Bin, taking screenshots, or transferring files, sound effects reinforce your visual actions on Mac.

However, default audio configurations may not suit every working environment. Whether you prefer a subtler, softer alert tone in quiet office settings, want to adjust the alert volume independently from your media playback volume, or wish to silence user interface sound effects entirely, macOS provides dedicated controls inside System Settings. This tutorial covers how to change your Mac system alert sound, configure custom alert volume levels, and manage interface sound effects.

Understanding macOS System Audio Feedback

The macOS sound architecture divides audio outputs into two distinct streams:

• System Alert Sound: The auditory warning played when an application demands your attention, an invalid key combination is pressed, or a dialogue window rejects input. Apple includes several classic and modern tones (such as Breeze, Boing, Bottle, Frog, Sosumi, and Funk).
• User Interface Sound Effects: Auditory feedback accompanying everyday Finder and window management operations, including the paper-crumpling sound when emptying the Bin, the shutter click when capturing a screen grab, the click of dragging items to the Dock, and the volume indicator feedback chime.

Because alert sounds share output hardware with media playback, configuring independent alert volume thresholds prevents startling blares when listening to music or podcasts at high volume.

Step 1: Open Sound Settings in macOS

1. Click the Apple menu () located in the top-left corner of the menu bar.
2. Select System Settings from the dropdown menu.
3. In the left sidebar, click Sound (represented by a speaker icon).

Step 2: Choose and Preview a New Alert Sound

1. Locate the Sound Effects section at the top of the Sound settings window.
2. Click the dropdown menu adjacent to Alert sound to reveal the list of pre-installed macOS chimes.
3. Select any tone (e.g., Submarine, Hero, Ping, or Tink). macOS plays a preview immediately through your active output speakers.
4. Once selected, the tone becomes your global system alert sound across all desktop applications.

Step 3: Adjust the Alert Volume Independently

To ensure system error chimes remain gentle even when your primary volume is turned up:

1. Under the Sound Effects header, locate the Alert volume slider.
2. Drag the slider to your preferred decibel level.
3. Notice that moving the slider adjusts the loudness of alert alerts without changing the main Output volume slider located further down the page.
4. Play sound on startup: If you wish to disable or re-enable the classic Mac startup chime that plays when rebooting your hardware, toggle the Play sound on startup switch in this section.

Step 4: Customise or Silence Interface Sound Effects

If you find repetitive clicking and crumpling noises distracting during daily multitasking, customise system operational sounds:

• Play user interface sound effects: Untick or toggle this switch Off to silence the auditory feedback triggered when emptying the Bin, dragging files, capturing screenshots, or altering system toggles.
• Play feedback when volume is changed: By default, pressing the volume keys on your Mac keyboard may play a clicking chirp to indicate current loudness. Toggle this option Off if you prefer silent keyboard volume adjustments, or turn it On to verify audio levels auditorily.

Step 5: Route Alert Sounds Through Dedicated Speakers (Optional)

If you connect external studio monitors, USB audio interfaces, or wireless headphones to your Mac, you can choose where alert sounds originate:

1. Inside System Settings > Sound, locate the Play sound effects through dropdown menu.
2. By default, it is set to Selected sound output device (routing alerts wherever your music plays).
3. To prevent blaring alerts through external hi-fi speakers or professional studio monitors, select Mac mini Speakers, MacBook Pro Speakers, or an alternate auxiliary output.

Adding Custom Sound Files to the Alert Library

To use your own recorded audio file or unique chime as an alert sound:

1. Prepare your audio file in .aiff or .wav format.
2. Open Finder, press Cmd + Shift + G to open the Go to Folder prompt, and enter:

   ~/Library/Sounds/

3. If the Sounds directory does not exist, create a new folder named Sounds inside your user Library.
4. Copy your .aiff audio file into this directory.
5. Return to System Settings > Sound. Your custom audio track will appear directly under the Custom category in the Alert sound dropdown menu.