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

EURASIP Journal on Audio, Speech, and Music Processing

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

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