wehub-resource-sync
28 lines
598 B
Python
28 lines
598 B
Python
import numpy as np
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def norm_f0(f0, uv=None):
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if uv is None:
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uv = f0 == 0
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f0 = np.log2(f0 + uv) # avoid arithmetic error
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f0[uv] = -np.inf
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return f0
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def interp_f0(f0, uv=None):
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if uv is None:
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uv = f0 == 0
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f0 = norm_f0(f0, uv)
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if uv.any() and not uv.all():
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f0[uv] = np.interp(np.where(uv)[0], np.where(~uv)[0], f0[~uv])
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return denorm_f0(f0, uv=None), uv
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def denorm_f0(f0, uv, pitch_padding=None):
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f0 = 2 ** f0
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if uv is not None:
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f0[uv > 0] = 0
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if pitch_padding is not None:
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f0[pitch_padding] = 0
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return f0
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