It seems like Facebook has started rolling out the new notification sound on the website. Don’t be shocked when you start hearing this sound.
I just got the notification sound feature turned on this morning and it is annoying. I guess most people will be annoyed by it. It is strange that Facebook still rolled out this feature despite reviewers saying that they hate it.
Luckily for everyone, turning off that annoying notification sound is easy. Just go to your Account Settings, Notifications under How You Get Notifications On Facebook section. Uncheck Play a sound when each new notification is received.
You are welcomed.