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Using Communication Supports to Enhance Communication Effectiveness of People with Severely Dysarthric Speech

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Speech supplementation strategies improve spoken communication for people with motor speech disorders by augmenting or supplementing the acoustic speech signal with additional cues or strategies that may increase intelligibility, comprehensibility, or computer speech recognition

Alphabet Supplementation consistently improved sentence intelligibility outcomes for speakers with motor speech disorders Across the severity range, the impact on sentence intelligibility is approximately 26% and on word intelligibility is (11%)

Contextual Supplementation involves the use of words, phases, or contextually rich photographs to establish and maintain the topics in conversational interactions involving speakers with severe dysarthria. Previous research has documented the impact of topic supplementation on word (28%) and sentence (11%) intelligibility

Use of AAC Technology and Strategies to Supplement Speech Performance Effectiveness data from several recent studies will be presented that incorporates AAC applications from mobile technology tablets to support alphabet, topic, and photographic speech supplementation.

Speech Recognition Accuracy resulting from the use of standard commercially available ASR systems has been the highest and most consist for speakers with mild dysarthria; while being much less effectively with moderate and severely dysarthric speakers. The supplemented speech recognition system (SSR) developed by Hosom and colleagues (2010) and Fager and colleagues (2010) incorporates first letter alphabet supplementation, word prediction, as well as personalized speech processing models based on individualized speech samples.


David Beukelman    
Madonna Rehabilitation Hospital
United States

Susan Fager    
Madonna Rehabilitation Hospital
United States


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