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An AAC user indicates a series of numbers on an eye gaze communication board in order to convey a word. Augmentative and alternative communication (AAC) encompasses the communication methods used to supplement or replace speech or writing for those with impairments in the production or comprehension of spoken or written language.
Speech-generating devices (SGDs), also known as voice output communication aids, are electronic augmentative and alternative communication (AAC) systems used to supplement or replace speech or writing for individuals with severe speech impairments, enabling them to verbally communicate. [1]
Semantic compaction, (Minspeak), conceptually described as polysemic (multi-meaning) iconic encoding, is one of the three ways to represent language in Augmentative and alternative communication (AAC). [1] It is a system utilized in AAC devices in which sequences of icons (pictorial symbols) are combined in order to form a word or a phrase.
[29] [30] AAC devices can be no-tech (sign language and body language), low-tech (picture boards, paper and pencils), or high-tech (tablets and speech generating devices). [28] The choice of AAC device is very important and should be determined on a case-by-case basis by speech therapists and assistive technology professionals.
Picture communication symbols (PCS) are a set of colour and black & white drawings originally developed by Mayer-Johnson, LLC for use in augmentative and alternative communication (AAC) systems. These AAC systems may be high-tech, such as the TD Pilot, or low-tech such as a communication board. PCS symbols are now owned and maintained by Tobii ...
Due to speech, motor, and cognitive decline, success with AAC devices in this population is variable [14]. Overall, amplifiers and alphabet boards are the most common low-tech AAC devices and the Lightwriter is the most common high-tech AAC device assigned to people with Parkinson’s disease [14].
Tangible symbols are a type of augmentative and alternative communication (AAC) that uses objects or pictures that share a perceptual relationship with the items they represent as symbols. A tangible symbol's relation to the item it represents is perceptually obvious and concrete – the visual or tactile properties of the symbol resemble the ...
If a device does create a voice output, it is referred to as a speech generating device. While the message may take the form of speech output, it may also be printed as a visual display of speech. Many of these devices can be connected to a computer, and in some cases, they may even be adapted to produce a variety of different languages. [15] [22]