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fbank窗函数采用了hamming,和训练python脚本中的kaldi.fbank中的窗函数对不上,导致特征提取对不上 #209

@QHenry1990

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@QHenry1990

在runtime的core的fbank.h中,窗函数采用hamming,而在训练中采用的是provey函数,导致C推理特征和python特征数据对不上。

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