aishell/train/analyze_result_brief

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max dur: 14.531 s (wav_id: BAC009S0658W0472)
P99 dur: 8.510 s (wav_id: BAC009S0662W0365)
P75 dur: 5.326 s (wav_id: BAC009S0215W0137)
P50 dur: 4.262 s (wav_id: BAC009S0104W0492)
P25 dur: 3.494 s (wav_id: BAC009S0710W0419)
min dur: 1.230 s (wav_id: BAC009S0141W0423)
avg dur: 4.522 s
std dur: 1.359
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max txt_length: 44.000  (wav_id: BAC009S0107W0142)
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avg txt_length: 14.406 
std txt_length: 4.312
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avg speed: 3.186 char/s
std speed: 0.476
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avg leading_sil: 166.765 ms
std leading_sil: 204.435
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avg trailing_sil: 128.904 ms
std trailing_sil: 185.341