How To Turn Off Facebook Chat Notifications?

This tutorial will show you how to turn off disable Facebook Chat Notifications. You have been annoyed especially because of the new message sound . If you get many chat messages and notifications, it can make you uncomfortable. Chat sound disabling is easy to find, but if you can't do that, please follow step below:
Step 1, login facebook. If you didn't, click here please:

Step 2, click here and go to Settings Notifications tab:

Step 3, SOUNDS ~> Play a sound when a message is received ~> On ~> Off: