I am trying to find the "message sent" "blip" sound specifically
AOSP: The AOSP Messages source code is here, but the source code does not have a "sent sound" (nor any sound) because those sounds are in your system sounds. You can find them at
/system/media/ from a file manager like ES File Explorer.
All system sounds can be found inside the
Different to the
/data partition the
/system partition can be read with normal user permissions so you can easily copy those sounds; you don't need any source code (whyever would you need code for that?).
If you'd like to get an application specific sound then open the apk as a
.zip-file and look out for the