LEVERAGING NATIVE LANGUAGE SPEECH FOR ACCENT IDENTIFICATION USING DEEP SIAMESE NETWORKS
Table 6: Accuracies on utterances of varying accent strengths.
['Accent judgment (1-4)', '% of samples', 'Accuracy']
The CSLU Foreign Accented Speech corpus contains perceptual judgments about the accents in the utterances. Each accented speech sample was independently annotated for accent strength on a scale of 1-4 (where 1 denotes a very mild accent and 4 denotes a very strong accent) judged by three native American English speakers. Intuitively, as the accent strength increases, our classifier accuracy increases. Despite the fact that our test set predominantly contains utterances of accent strength 3, it is interesting to see that the average accuracy on these test samples is much higher than the samples rated 1 and 2 on accent strength.