The notifications are nothing more than sounds, mp3 format. There are also some brought by voice command which will read your text and email under certain conditions. I paid alot for my phones, I want them to talk to me.
Here is a tutorial that is available in my sig on the sounds which include these sounds you all are talking about. I've been using the same sounds for about a year now...
Customizing Rom Sounds - Sound Themes Tutorial
Have you ever wanted to customize the Sound Theme in your ROM? This tutorial will show you how to customize the Sounds in your Custom Rom!
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