We also see that with transfer learning, a model trained on only 5 hours of ST data achieves a BLEU of 9.1, nearly as good as the 10.8 of a model trained on 20 hours of ST data without transfer learning.
fine-tuning an English ASR modelwhich is relatively easy to obtain-produces similar results to training an ST model on four times as N = 0 2.5 5 10 20 50 base 0 2.1 1.8 2.1 10.8 22.7 +asr 0.5 5.7 9.1 14.5 20.2 28.2  much data, which may be difficult to obtain.