The experiment uses on spectrogram-based features with logistic regression classifier

Outputs for block scores_analyzer

dev_eer 0.0636682
dev_eer_threshold 0.201115
dev_far 0.0636599
dev_frr 0.0636764
test_far 0.0606187
test_frr 0.0563128
test_hter 0.0584657
dev_negatives 38580
dev_positives 4994
test_negatives 43320
test_positives 5576
dev_scores
test_scores
dev_roc
test_roc
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A simple baseline of speaker spoofing attacks detection system.

This algorithm relies on the Bob library.

The baseline system relies on: * VAD detection based on 4Hz modulation * Audio spectrogram * Feature vectors as ratios between average values of the specified number of subbands of the spectrogram * Logistic regression classifier which is trained on the training set and computes score on the development set.

As the results, EER value is computed and Detection Error Tradeoff (DET) curve is plotted.

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