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Norman R. Brown

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Publications by Norman R. Brown (bibliography)

1989

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Brown, Norman R. and Vosburgh, Ann Marie (1989): Evaluating the Accuracy of a Large-Vocabulary Speech Recognition System. In: Proceedings of the Human Factors Society 33rd Annual Meeting 1989. pp. 296-300.

“The Tangora is a large-vocabulary, speaker-dependent, isolated-word speech recognition system. In this paper, we describe a study designed to test this system under a broader range of conditions than had previously been considered. The experiment itself consisted of four experimental sessions: Sessions 1 and 4 were enrollment sessions, and Sessions 2 and 3 were test sessions. During each test session, participants read 32 preselected sentences and dictated 40 sentences of their own composition The results of this experiment indicated that (a) there was a high degree of inter-subject variability and a high degree of intra-subject consistency; (b) users did not improve with limited experience; (c) the style/content of the test sentences affected recognition performance; (d) recognition errors were more common following misrecognized words than following correctly recognized words; and (e) new users had little difficulty with isolated-word speech. We discuss the implications that these findings have for application selection, interface design, user training, and system evaluation.”

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