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Roughness frequency shift corrected in frequency domain #54

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Merged
merged 1 commit into from
May 24, 2022
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Roughness frequency shift corrected in frequency domain #54

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6 changes: 3 additions & 3 deletions mosqito/sq_metrics/roughness/roughness_dw/roughness_dw_freq.py
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Original file line number Diff line number Diff line change
Expand Up @@ -49,18 +49,18 @@ def roughness_dw_freq(spectrum, freqs):
if len(spectrum.shape) == 1:
nperseg = len(spectrum)
nseg = 1
fs = int(nperseg * np.mean(freqs[1:] - freqs[:-1]))
fs = int(2 * nperseg * np.mean(freqs[1:] - freqs[:-1]))

# 2D spectrum
elif len(spectrum.shape) > 1:
nperseg = spectrum.shape[0]
nseg = spectrum.shape[1]
# one frequency axis per block
if len(freqs.shape) > 1:
fs = int(nperseg * np.mean(freqs[0, 1:] - freqs[0, :-1]))
fs = int(2 * nperseg * np.mean(freqs[0, 1:] - freqs[0, :-1]))
# one frequency axis for all the blocks
elif len(freqs.shape) == 1:
fs = int(nperseg * np.mean(freqs[1:] - freqs[:-1]))
fs = int(2 * nperseg * np.mean(freqs[1:] - freqs[:-1]))
freqs = np.tile(freqs, (nseg, 1)).T

# Initialization of the weighting functions H and g
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