support BiCifParaformer timestamp output without vad

北念

2023-03-03 af3fb57fa9f3e635c8e3f16804a19ada6d83f5b2

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beam_size: 1
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.0
lm_weight: 0.15