Implementation of Advanced Communication Aid for People with Severe Speech Impairment

This paper is mainly aimed at developing an advanced communication aid for the people having severe speech impairment. This method gives rise to a new form of communication aid which recognizes the disordered speech of the user and builds messages which are converted into synthetic speech. While employing this method, the recognition perplexity can be increased. The selected message building technique traded-off various factors including speed of message construction and range of available message outputs. The trial high lightened some issues which limit the performance and usability of device when applied in real usage situations, with mean recognition accuracy of 67% in these circumstances. A field trial by individuals with moderate to severe dysarthia and confined that they can make use of the device to produce intelligible speech output from disordered speech input.