Your Mac gives you alert when some dialog boxes appear or you make some error on the system running on OS X. If you want to change this alert sound to a customized alert, there is a bit lengthy but sure-shot process.
We have presented step-by-step information on how you can make a custom system alert sound for Mac OS X. You don't need to download or install any third-party app or software on your Mac.
We present this information to spice up your user experience with Mac. Before you create a custom system alert, you can record sound/s with the help of QuickTime to capture an audio clip. Check out the following steps and make your choice of system alert sound.
How to Make a Custom System Alert Sound in Mac OS X
Step #1. Launch QuickTime player on Mac.
Step #2. Click on File menu → Click on New Audio Recording from the drop-down menu.
Step #3. Click on the Red button and capture sound of your choice.
Step #4. Click again on the Red button to stop the recording.
Note that system alert sound should be kept short and sweet.
Step #5. Click on Edit option → Click on Trim.
Step #6. Now drag the yellow sliders from both ends to trim the audio.
Step #7. Click on File again and hit Save.
Step #8. Press Command+Shift+G to launch “Go To Folder” screen.
Step #9. Type in the following path:
Step #10. Assign suitable name to the audio file and hit “Save“.
Note that file name will become the system alert name.
Now launch Apple menu by click on Apple logo on your Mac.
Step #11. Click on System Preferences.
Step #12. Now click Sound.
Step #13. And select “Sound Effect” → Locate the sound file you have saved and click on it.
This will set a custom sound alert in your Mac OS X.