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Commit 475e99f

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ybdarrenwangybdarrenwang
ybdarrenwang
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ybdarrenwang
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fix bug in delta (forgot to divide by denom)
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+1-1Lines changed: 1 addition & 1 deletion

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‎python_speech_features/base.py‎

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+1-1Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -184,5 +184,5 @@ def delta(feat, N):
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denom = sum([2*i*i for i in range(1,N+1)])
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dfeat = []
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for j in range(NUMFRAMES):
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dfeat.append(numpy.sum([n*feat[N+j+n] for n in range(-1*N,N+1)], axis=0))
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dfeat.append(numpy.sum([n*feat[N+j+n] for n in range(-1*N,N+1)], axis=0)/denom)
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return dfeat

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