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Other Options in the Sound Preferences Pane You can also the Alert Volume slider in the Sound preferences pane to Silent (the far left). Now choose the Flash the Screen When an Alert Sound Occurs check box to create a visual alert.Open the Universal Access preferences pane.To set up screen alerts, do the following: The visual alert option quickly flashes the screen. At the same time, sound engineers use this alarm because they don’t want their Macs creating any audio outside of what they are working on). This functionality is very useful for people with hearing difficulties or for people working in some environments (such as libraries, classrooms, during the night when you don’t want to awake your family, etc. If you want to have you sound back on startup you need to open Terminal and type sudo nvram -d SystemAudioVolume.Įven when the audio alerts are used by default, some users prefer to see visual alerts rather then listening to the sound. When you restart your Mac, the OS X boot chime should no longer play. Now you’ll be prompted to type in your administrator password.

Wait for the Terminal UI to display your computer’s name (root directory) and punch in: CODE sudo nvram SystemAudioVolume=%80.Launch Terminal (from Applications > Utilities > Terminal).Yes, it could be annoying to always hear a boot chime when you start up your Mac. How Can I Disable a Boot Chime When I Start Up My Mac? When you select the sound and close the pane, the selected sound remains in effect.Use the Alert Volume slider to adjust the volume of the alert sound.You’ll hear samples play as you go through the list and click the items. Once there, you can choose an option from the Select an Alert Sound list.Open the Sound Preferences Pane by clicking Sound.To customize these sound effects, do the following: Mac OS ships with various alert sounds and different effects you may choose from, even though most of these effects are variations of subtle and short noises. However this mutes all sounds, and you’ll not be able to listen to songs or other audio files you’d like to listen. How to Change Sound Effects and Audible Alerts on Macįirst at all, you can use the mute button to turn off sound. 3 How To Setup Twitch Alerts In MAC OBS – Follower and Sub Notifications.1.6 How to Change Mail and iChat Sounds.1.4 Other Options in the Sound Preferences Pane.1.3 About Visual Flashing Screen Alerts.1.2 How Can I Disable a Boot Chime When I Start Up My Mac?.1 How to Change Sound Effects and Audible Alerts on Mac.