Figure 2. Experiment 2: at the behavioural level, voice similarity is better elicited by replicas (green) than caricatures (blue).

Each participant listened to all pairs from a set of M = 10 audio files (M(M + 1)/2 = 55 audio pairs) composed by a target T and the caricatures, replicas and normal voices of the 3 impersonators with the highest ranked caricatures of experiment 1 (bold face in Fig. 1). Participants were asked to rate the voice similarity of each pair using a scale from 1 (the two voices are very different) to 5 (the two voices are the same). For both targets, replicas (green) display higher grades than caricatures (blue) for voice similarity, opposite to the results of experiment 1 for speaker identity shown in Figure 1.