Multilingual AAC on Android

In this work, we report a design and development of an Augmentative and Alternative Communication (AAC) aids in the form of an Android mobile application, together with a web server, that lets users with linguistic impairments make verbal communication with others via graphical symbols organized in the application. Text-to-Speech units were used to generate both real-time voice outputs and sound files stored on external storage. Although pre-loaded symbols were prepared in Thai and English, the system was designed to support the addition of other languages. The work started from a survey of existing AAC products whose features and limitations were considered in our design. Functional, speech intelligibility, and user acceptance testing were performed to primarily evaluate our AAC.