| Trained/ Tested on | i-vector | x-vector | LSTM | SVM-linear | SVM-rbf | |||||
| Acc. | F1 | Acc. | F1 | Acc. | F1 | Acc. | F1 | Acc. | F1 | |
| PCM/ GSM-FR | 87.2% | 89.3% | 80.0% | 79.3% | 81.0% | 77.7% | 83.1% | 86.4% | 84.2% | 87.1% |
| PCM/ G.723.1 | 86.1% | 87.9% | 76.5% | 76.5% | 81.0% | 76.0% | 82.6% | 85.9% | 82.7% | 85.9% |
| GSM-FR/ PCM | 87.8% | 89.4% | 75.9% | 76.0% | 82.6% | 78.8% | 81.2% | 83.5% | 82.4% | 84.4% |
| G.723.1/ PCM | 85.9% | 87.7% | 75.3% | 72.7% | 80.1% | 77.4% | 78.9% | 80.0% | 81.0% | 82.6% |