Merge pull request #440 from alibaba-damo-academy/dev_lhn

zhifu gao

2023-04-28 f4710b4180d83328b48f97a8463ba1a2285c429e

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