fix oov bug for sond inference (#555)

Zhihao Du

2023-05-25 6cc2e585b745685c71c10af80dda3553cc949460

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# The conformer transducer decoding configuration from @jeon30c
beam_size: 10
simu_streaming: false
streaming: true
chunk_size: 16
left_context: 16
right_context: 0