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. 2023 Apr 26;18(4):e0284667. doi: 10.1371/journal.pone.0284667

Fig 11. There are two panels for every plot.

Fig 11

The top panels are spectrograms of the speech segments IMFs (left) and the BLIMFs (right) obtained from the EMD of the male speech segment given in Fig 10(d). The x-axis is time (0.113 s), given in seconds, the y-axis is frequency given in Hz (0–10000Hz). The second panel represents the results of the GLRT test conducted on every mini-batch of that IMFs or BLIMFS segment. There are 50 mini-batches per segment. White corresponds to equality in distribution, hence no disease detected, while black corresponds to the detection of Parkinson’s disease. (a) Speech segments of the first three IMFs extracted from the sick male speech segment given in Fig 10(d) and (b) Speech segments of the first three BLIMFs computed on the IMFs of the the sick male speech segment given in Fig 10(d).