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A Study on Channel Mis-match Compensation Technique for Robust Speaker Verification System  

강철호 (광운대학교 대학원 전자통신공학과)
정희석 (광운대학교 대학원 전자통신공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.3, 2004 , pp. 228-234 More about this Journal
Abstract
In this paper, we proposed the compensation technique that overcomes the limitations of the conventional approaches through summing up the bias terms between world's codebook and individual codebook vectors of feature parameters. But, mean compensation without condition can bring higher false acceptance. Therefore, the proposed technique compensates the channel mis-match condition by weighted bias sum using nonlinear function regarding to the distortion between speech and silence. The simulation results show that the FRR (flase reject rate) is decreased 14.95% when the proposed algorithm was applied.
Keywords
Mis-match compensation; Bias reduction; speaker verification;
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