Augmentative and alternative communication (AAC) is a way for a child to communicate when the child does not have the ability to use speech as a primary means of communication. AAC can be high-tech, such as a speech-generating device that is programmed to talk for the child. AAC can also be low-tech by using simple pictures, sign language, or a device that plays recorded messages.

Children can use AAC for a short time while speech skills are developing, or for their entire life.