Figure 2
From: Phonetic relevance and phonemic grouping of speech in the automatic detection of Parkinson’s Disease
Waveforms and spectrograms of a speaker with PD (in an advanced stage) and a control speaker pronouncing the word [petaka]. Obtained from the Neurovoz corpus. Red dot-lines mark the first four formants calculated with Praat software. (A) Idiopathic PD female speaker. Age: 85. UPDRS: 47. Span: 810 ms. (B) Control female speaker. Age: 83. Span: 780 ms.
