Table 4. Spectrograms Analysis of Noisy Speech Signal and Enhanced Signal of AWGN, Airport, Babble, Car, Exhibition and Restaurant Noises.
| Noise at −5db SNR level | (a): Noisy Speech Signal | (b): Enhanced Signal/ Reconstructed Signal (BAV-MCSE) | (c): Enhanced Signal/ Reconstructed Signal (DWT-CNN-MCSE) |
|---|---|---|---|
| AWGN |
|
|
|
| Airport |
|
|
|
| Babble |
|
|
|
| Car |
|
|
|
| Exhibition |
|
|
|
| Restaurant |
|
|
|