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. 2013 Nov 8;8(11):e78273. doi: 10.1371/journal.pone.0078273

Figure 4. Formant values for the interjection vowels in Spanish (S) and Cha'palaa (C).

Figure 4

An instrumental analysis of interjection tokens from Spanish and Cha'palaa shows that the interjections have distinct, language-specific vowel targets, confirming the auditory analysis in Figure 3.