Oral circuits
From MediaWiki
A Transformer's oral circuits are related to vocalization.
Fiction
Marvel UK
The Magnificent Six! Prowl cleared his oral circuits to cover up his daydreaming during one of Optimus Prime's boring lectures.
Transformers (2007)
Bumblebee had his "vocal processor" damaged in a battle with the Decepticons, rendering him unable to communicate with other species, though still able to communicate over inter-Autobot frequencies. Ratchet had been having trouble fixing them ever since. Transformers
It is unknown how, if at all, the vocal processor and oral circuits are related. They may coexist, or they may be different devices which serve the same purpose.
