| Mixed Excitation Model |
| Conventional excitation (pulse train + noise) | |
| Mixed excitation | |
| Mixed excitation + Postfilter |
| Conventional excitation (pulse train + noise) | |
| Mixed excitation | |
| Mixed excitation + Postfilter |
| Conventional excitation (pulse train + noise) | |
| Mixed excitation | |
| Mixed excitation + Postfilter |
| Conventional excitation (pulse train + noise) | |
| Mixed excitation | |
| Mixed excitation + Postfilter |
| Conventional excitation (pulse train + noise) | |
| Mixed excitation | |
| Mixed excitation + Postfilter |