Semi-Synchronous Speech and Pen Input
2007
This paper proposes a new interface method using semi-synchronous speech and pen input for mobile environments. In this interface, a user speaks while writing, where pen input complements speech to achieve higher recognition performance than speech alone. A multimodal recognition algorithm that can handle the asynchronicity of the two modes using a segment-based unification scheme is proposed. This method is evaluated under noisy conditions with four different pen-input interfaces: character, stroke, pen-touch, and point-to-character, each of which is assumed to be given for a phrase unit in speech. It is confirmed that the recognition accuracy is improved by the proposed method in comparison with that by speech alone in all the pen-input conditions.
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