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fix bug, change squre to element wise squre #237

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fix bug, change squre to element wise squre #237

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6 changes: 3 additions & 3 deletions pyAudioAnalysis/audioFeatureExtraction.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,12 +25,12 @@ def stZCR(frame):

def stEnergy(frame):
"""Computes signal energy of frame"""
return numpy.sum(frame ** 2) / numpy.float64(len(frame))
return numpy.sum(np.square(frame, dtype='int64')) / numpy.float64(len(frame))


def stEnergyEntropy(frame, n_short_blocks=10):
"""Computes entropy of energy"""
Eol = numpy.sum(frame ** 2) # total frame energy
Eol = numpy.sum(np.square(frame, dtype='int64')) # total frame energy
L = len(frame)
sub_win_len = int(numpy.floor(L / n_short_blocks))
if L != sub_win_len * n_short_blocks:
Expand Down Expand Up @@ -139,7 +139,7 @@ def stHarmonic(frame, fs):
M = len(R) - 1

Gamma = numpy.zeros((M), dtype=numpy.float64)
CSum = numpy.cumsum(frame ** 2)
CSum = numpy.cumsum(np.square(frame, dtype='int64'))
Gamma[m0:M] = R[m0:M] / (numpy.sqrt((g * CSum[M:m0:-1])) + eps)

ZCR = stZCR(Gamma)
Expand Down