Development for speech interface for form -based in formation access services on Web

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While some speech interface systems have been developed for accessing Web resources, they are limited for accessing some specific contents and they don't provide a universal interface for arbitrary information retrieval services on the WWW. We propose an interactive speech user interface system, which could be applied to many form-based information retrieval services of the WVVW. In particular, our system was implemented based on a client-server, a Web proxy-centered architecture and employed an information extraction and language processing of HTML documents for providing a general-purpose interface for many form-based WWW contents. We also performed some experiments by 12 subjects for the comparison of the usability under different usage conditions. As a result, the proposed system attained comparative and higher expected usability measures over the pen-touch input method under the condition of an ideal speech recognition performance, and could be expected to achieve the effectivenes … More s or the superiority over a pen touch-only interface in terms of the usability as their usage condition approaches to a realistic PDA usage condition.We also proposed an. interface for a name input based on speech recognition using syllable-based N-gram and a word dictionary, which was frequently required to input into form-based web pages. User first utters a name and then chooses the correct word/syllables by pen touch from word/syllable candidates which were obtained from speech recognition. Name utterance is hard to recognize accurately because of the large vocabulary size, so the system uses continuous syllable recognition with syllable-based N-gram and isolated word recognition with a dictionary containing frequent words. The user can find the correct the answer from word candidates or syllable sequence candidates at a rate of 82-86%, and can input correct name at a rate of 94-96% with syllable selection from the syllable lattice. Some subjects used this interface and felt that it was useful. Less