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- W2154092232 abstract "Pronunciations in spontaneous speech differ significantly from citation form and pronunciation modeling for automatic speech recognition has received considerable attention in the last few years. Most methods describe alternate pronunciations of a word using multiple entries in a dictionary or using a network of phones, assuming implicitly that a deviation from the canonical pronunciation results in a “complete” change as described by the alternate pronunciation. We investigate this implicit assumption about pronunciation change in conversational speech and demonstrate here that in most cases, the change is only partial; a phone is not completely deleted or substituted by another phone but is modified only partially. Evidence supporting this conclusion comes from the three-way analysis of features extracted from the acoustic signal for use in a speech recognition system, canonical pronunciations from a dictionary, and careful phonetic transcriptions produced by human labelers. Most often, when a deviation from the canonical pronunciation is marked, neither the canonical nor the manually labeled phones represent the actual acoustics adequately. Further analysis of the manual phonetic transcription reveals a significant number (>20%) of instances where even human labelers disagree on the identity of the surface-form. In light of this evidence, two methods are suggested for accommodating such partial pronunciation change in the automatic recognition of spontaneous speech and experimental results are presented for each method." @default.
- W2154092232 created "2016-06-24" @default.
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- W2154092232 date "2004-10-01" @default.
- W2154092232 modified "2023-09-25" @default.
- W2154092232 title "Pronunciation change in conversational speech and its implications for automatic speech recognition" @default.
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- W2154092232 doi "https://doi.org/10.1016/j.csl.2003.09.005" @default.
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