Update wav_utils.py

zhuzizyf

2023-03-03 1a39b6f981d2cf5c8066d7fa4d38c58bccbbfe13

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