A self-transcribing speech corpus: collecting continuous speech with an online educational game

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TitleA self-transcribing speech corpus: collecting continuous speech with an online educational game
Publication TypeConference Paper
Year of Publication2009
AuthorsGruenstein, A, McGraw I, Sutherland A
Conference NameSLaTE Workshop
Abstract

We describe a novel approach to collecting orthographically transcribed continuous speech data through the use of an online educational game called Voice Scatter, in which players study flashcards by using speech to match terms with their definitions. We analyze a corpus of 30,938 utterances, totaling 27.63 hours of speech, collected during the first 22 days that Voice Scat- ter was publicly available. Though each individual game cov- ers only a small vocabulary, in aggregate speech recognition hypotheses in the corpus contain 21,758 distinct words. We show that Amazon Mechanical Turk can be used to orthograph- ically transcribe utterances in the corpus quickly and cheaply, with near-expert accuracy. Moreover, we present a filtering technique that automatically identifies a sub-corpus of 39% of the data for which recognition hypotheses can be considered human-quality transcripts. We demonstrate the usefulness of such self-transcribed data for acoustic model adaptation.

URLhttp://www.eee.bham.ac.uk/SLaTE2009/papers%5CSLaTE2009-26-v2.pdf