The term computer-generated
most often refers to a sound or visual that has been created in whole or in part with the aid of computer software
. It can, but does not customarily, refer to something produced solely by computer hardware
, like a noise from a hard disk drive
or a printed page from a printer
(although the object printed on the paper may be computer-generated, the physical page itself is not).
Sounds and visuals are the most easily computer-generated objects. They are created either from the ground up, or by using real-world models recorded by a microphone
, over which computer-generated objects are placed.