Figure 3
A diagram shows four plots of audio features. Left to right: A heatmap titled M F C C showing Coefficient Index zero to twelve versus Frame Index zero to 1 8 0. A heatmap titled L F C C showing Coefficient Index zero to twelve versus Frame Index zero to 1 8 0. A heatmap titled C Q C C showing Coefficient Index zero to twelve versus Frame Index zero to 6 0 0. A heatmap titled C Q T spectrogram showing Frequency bins zero to 8 0 versus Time (s) zero to 5 point 9 4.

Frontend features utilized for our spoofing attack countermeasures.

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