Figure 1.
Model of the remote voice based access control
Figure 2.
Speech signal after undergoing framing
Figure 3.
Hamming window before applying it on speech signal
Figure 4.
Speech signal after applying the Hamming Window
Figure 5.
Audio signal with magnitude and phase
Figure 6.
Audio signal considering the magnitude only
Figure 7.
Mel-filter bank
TABLE I.
PERFORMANCE EVALUATION OF VOICE SIGNATURE BASED AUTHENTICATION APPROACH
| Trial | No. of samples | No. of False rejection | No. of False acceptance | % Accuracy |
|---|---|---|---|---|
| User 1 | 30 | 3 | 1 | 87 |
| User 2 | 30 | 3 | 2 | 83 |
| User 3 | 30 | 2 | 0 | 93 |
| User 4 | 30 | 1 | 1 | 93 |
| User 5 | 32 | 4 | 2 | 83 |
Figure 8.
Computation cost (ms)
Figure 9.
Energy cost in terms of cycles