Audiograph players are turned on and off by just the push of a button.
To play an Audiograph, the sheet is placed into the top of the machine, and when the player is activated, the paper is pulled through the slot.
Audiograph machines are used to record journals, music, miscellaneous thoughts or speculations, and even books.
Creating an Audiograph
1-60 Second Audiograph: 1d4 minutes
1-3 minute Audiograph: 1d6+1 minutes
4-10 minute Audiograph: 1d10 + 3 minutes
11 - 20 minute Audiograph: 2d10 + 5 minutes
21+ minute Audiograph: 1d20 + double the requested amount of recording time
A single Audiograph sheet can only hold up to 1 hour of audio in total.
Note: Yes much of this is taken from the Dishonored Wiki, but I liked the idea of having a way to record audio in D&D Fifth Edition, and this was the best fit.