Recently Facebook revealed a new feature that plays a sound every time you receive a notification. Its pretty ok when a sound popped up on the arrival of a chat message but having beeps sound at every notification can get irritating. You do not need to worry much or turn your master volume off for that matter, as there exists an easy way to turn it off.
Just follow the steps below and you can easily avoid the sound beeping on notifications that you receive.
Step#1: Click on the gear on the upper right corner and go to Account Settings.
Step#2: Now click on the Notifications tab shown on the left side of the Account Settings window.
Step#3: Click the View link next to On Facebook and uncheck the box that says "Play a sound when each new notification is recieved." Then click on Save Changes.
Congratulations, you have rolled yourself out of the trouble of receiving the irritating sound on every notification. However please know that on following the above steps, you will rule out the sound for the chat messages as well. This feature has been out since November last year, but not everyone has got it. If you do and it irritates you, you can always set it off manually by following the above mentioned steps.