Table 5 Recognition rate (%) obtained by proposed and standard methods with car 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 | 45.96 | 28.51 | 23.15 | 10.13 | 29.19 | |
5 dB | 70.81 | 56.37 | 46.55 | 13.50 | 56.14 | |
Car noise | 10 dB | 88.94 | 80.57 | 70.87 | 20.65 | 81.08 |
15 dB | 94.84 | 91.55 | 86.07 | 31.74 | 92.23 | |
20 dB | 96.74 | 94.89 | 91.60 | 43.21 | 95.63 | |
Average | 79.46 | 70.38 | 63.65 | 23.85 | 70.85 | |