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Table 1 Variation of LMS updating performance due to various characteristics of reference and current speech frame

From: Single-channel acoustic echo cancellation in noise based on gradient-based adaptive filtering

Reference speech sample Current noise- and echo-corrupted speech sample LMS update performance
Voiced Voiced Poor
Voiced Unvoiced Unsatisfactory
Voiced Pause Satisfactory/Excellent
Unvoiced Voiced Excellent
Unvoiced Unvoiced Excellent
Unvoiced Pause Excellent
Pause Voiced Poor
Pause Unvoiced Poor
Pause Pause Poor