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Probabilistic Class Histogram Equalization Based on Posterior Mean Estimation for Robust Speech Recognition
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DOI：10.1109/LSP.2015.2490202.png)
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In this letter, we propose a new probabilistic class histogram equalization technique for noise robust speech recognition. To cope with the sparse data problem which is common in the case of short test data, the proposed histogram equalization technique employs the posterior mean estimator, a kind of the Bayesian estimator, for test CDF. Experiments on the Aurora-4 framework showed that the proposed method produces performance improvement over the conventional maximum likelihood estimation-based approach.
Keyword:
CDF estimation
feature normalization
histogram equalization
posterior mean
robust speech recognition
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9.6
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1.1W
被引数:
1.7W
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A synopsis of dated entries in the biological collecting notes from eastern and northern Australia made by Robert Brown (1773–1858) on theInvestigator voyage of 1801–1805对罗伯特·布朗（Robert Brown, 1773–1858）在Investigator voyage of 1801–1805航行期间，于澳大利亚东部和北部地区制作的生物采集笔记中，已标注日期条目的概述。
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