Locating the source of a periodic ping tone on MacBook

Read the earlier description and lose this use repetition. Where is the AI??

[Re-Titled by Moderator]

Original Title: Find a machine log in order to determine the origin of a periodic ping. I get a tone. Have no idea what it is. Not email or text. Weird. Used to be easy to find logs - now it seems they are buried in the Apple noodle bowl.