Merge pull request #308 from alibaba-damo-academy/dev_lhn

hnluo

2023-03-29 7dc81334ad28e3d293e1cadb41ba4648b4998ef8

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7