support wav file input

haoneng.lhn

2023-04-28 dcc4053d3e25ff3962e9a8236a26ef69ae4c4827

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 1.0
lm_weight: 0.7