A Speech Generating Device (SGD) is an electronic augmentative and alternative communication (AAC) system that produces digitized or synthesized speech output. SGDs can range from dedicated communication devices with voice output to tablet-based AAC apps; they allow individuals with complex communication needs (e.g., due to autism, cerebral palsy, stroke, or ALS) to express themselves by selecting symbols, words, or letters that the device then speaks aloud. Modern SGDs often have customizable vocabularies, multiple access methods (touchscreen, eye-gaze, switch scanning), and voices that can be tailored to the user. The introduction of an SGD can significantly enhance a non-speaking person’s ability to participate in social interactions, academic activities, and daily life by providing a “voice.”
Beukelman, David R., and Janice C. Light. 2020. Augmentative & Alternative Communication: Supporting Children and Adults with Complex Communication Needs, 5th ed. Baltimore: Paul H. Brookes.
Light, Janice C., and David McNaughton. 2012. “The Changing Face of Augmentative and Alternative Communication: Past, Present, and Future Challenges.” Augmentative and Alternative Communication 28 (4): 197–204. Link
