SpecAugment: A Simple Data Augmentation Methodfor Automatic Speech Recognition
Table 6: Test set WER (%) evaluated without LM for network LAS-4-1024 trained with schedule B.
['[ITALIC] W', '[ITALIC] F', '[ITALIC] mF', '[ITALIC] T', '[ITALIC] p', '[ITALIC] mT', 'test-other', 'test']
Time warping contributes, but is not a major factor in improving performance. We see that the effect time warping, while small, is still existent. Time warping, being the most expensive as well as the least influential of the augmentations discussed in this work, should be the first augmentation to be dropped given any budgetary limitations.