Computer Help and Support

But, have you gone into settings->notifications and looked to make sure they are off for each individual app. Under the app name in the list it should say off if off. If on, it will say one or more of the following: Banners. sounds. Badges. Critical alerts. I don’t think it would be one of the enhanced safety or government alert at the bottom because I think they always come with a banner or message. One might have inadvertently gotten turned on. Also, it’s possible that one app has sound notification on but the banner notification off. I’ve had this happen before and found it confusing. I’m not sure which tone the sound you are describing is. Maybe news flash or popcorn from the classic tones? I hope you figure it out because it sounds annoying.