Table 3 Recognition rate (%) obtained by proposed and standard methods with exhibition hall noise
From: A bio-inspired feature extraction for robust speech recognition
Recognition rate with HMM-4-GM | ||||||
|---|---|---|---|---|---|---|
SNR level | PLPaGc | PLP | LPCC | LPC | MFCC | |
0 dB | 37.53 | 26.67 | 18.33 | 8.31 | 26.04 | |
5 dB | 61.36 | 48.31 | 39.06 | 14.67 | 47.18 | |
Exhibition hall noise | 10 dB | 81.73 | 69.30 | 60.54 | 20.65 | 68.74 |
15 dB | 90.58 | 84.17 | 77.99 | 29.87 | 84.09 | |
20 dB | 95.74 | 91.40 | 86.92 | 40.00 | 92.14 | |
Average | 73.39 | 63.97 | 56.57 | 22.70 | 63.64 | |