<commit_before>from __future__ import division

import numpy as np

"""
SHRP - a pitch determination algorithm based on Subharmonic-to-Harmonic Ratio.

Based on the shrp.m from voicesauce v1.25.  Per that file, for details of the
algorithm, please see <NAME>.,"Pitch determination and voice quality analysis
using subharmonic-to-harmonic ratio" To appear in the Proc. of ICASSP2002,
Orlando, Florida, May 13 -17, 2002.  For update information, please check
http://mel.speech.nwu.edu/sunxj/pda.htm.

XXX: This is not a full re-implementation of shrp.m: it only implements those
functions actually used by the voicesauce func_GetSHRP function.

"""
# XXX This is a work in progress, working from the bottommost functions up.
# Function definitions are ordered the same as in the matlab source.<commit_msg>Don't implement ethreshold.<commit_after>from __future__ import division

import numpy as np

"""
SHRP - a pitch determination algorithm based on Subharmonic-to-Harmonic Ratio.

Based on the shrp.m from voicesauce v1.25.  Per that file, for details of the
algorithm, please see <NAME>.,"Pitch determination and voice quality analysis
using subharmonic-to-harmonic ratio" To appear in the Proc. of ICASSP2002,
Orlando, Florida, May 13 -17, 2002.  For update information, please check
http://mel.speech.nwu.edu/sunxj/pda.htm.

XXX: This is not a full re-implementation of shrp.m: it only implements those
functions actually used by the voicesauce func_GetSHRP function.

"""
# XXX This is a work in progress, working from the bottommost functions up.
# Function definitions are ordered the same as in the matlab source.

# ---- ethreshold -----
# Although present in the matlab source this function is not used.

def ethreshold(frames):
    """Determine energy threshold for silence."""
    raise NotImplementedError
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