Behavicker: Eavesdropping Computer-Usage Activities through Acoustic Side Channel

Figure 24

The impact of time resolution on the accuracy of recognizing activities at different layers.

(a) Local accuracy of recognizing activities at the 2nd layer with different window sizes

(b) Local accuracy of recognizing activities at the 3rd layer with different window sizes

(c) Local accuracy of recognizing activities at the 4th layer with different window sizes