Voice Activity Detection - Digital Speech: Coding for Low Bit Rate Communication Systems - page 361

35

30

25

20

15

10

5

0

5 10 15 20 25

Noise level (SNR dB)

G.729B GSM-EFR IS-127 AMR1 AMR2

Figure 10.10 Comparison of speech detection error rates against various babble
noise levels

60

50

40

30

20

10

0

5 10 15 20 25

Noise level (SNR dB)

G.729B GSM-EFR IS-127 AMR1 AMR2

Figure 10.11 Comparison of silence detection error rates against various babble
noise levels