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Hi. I'm doing my thesis on vocal and non-vocal classification. In the pre-emphahsis step of MFCC, y2 = filter([1, -a], 1, y); what does it mean? I can't relate the code of pre-emphasis with its equation H(z)=1-a*z-1. Help me Please.

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May Thu
May Thu 2018-8-22
关闭： MATLAB Answer Bot 2021-8-20
a=0.95; y2 = filter([1, -a], 1, y);

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