Figure 1
From: An efficient voice activity detection algorithm by combining statistical model and energy detection
MO-LLR scores (SNR = 15 dB). The vertical solid lines are the endpoints of the utterance. The transverse dotted lines are the decision thresholds. (a) Single observation LLR scores. (b) Soft MO-LLR scores with a window length of 10. (c) Soft MO-LLR scores with a window length of 30. (d) Hard-decision output of the MO-LLR algorithm with a window length of 30. Threshold for the hard-decision is 1.5.