Table 4 Recognition rate (%) obtained by proposed and standard methods with street 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 | 39.86 | 32.03 | 25.13 | 10.52 | 30.64 | |
5 dB | 65.90 | 51.60 | 41.73 | 12.65 | 50.52 | |
Street noise | 10 dB | 84.26 | 72.99 | 60.51 | 16.88 | 73.13 |
15 dB | 92.84 | 85.93 | 76.79 | 26.35 | 86.33 | |
20 dB | 96.00 | 91.63 | 87.09 | 38.04 | 92.31 | |
Average | 75.70 | 66.84 | 58.25 | 20.89 | 66.59 | |