A pilot study on the acoustic effects of a pseudo-palatal plate on speech: Implications for articulatory rehabilitation devices
Fig 3
(A) Heatmaps visualizing the MFCC coefficient values for the consonants/tʃ/ and/k/, before (left) and after (right) wearing the palatal plate.
The horizontal axis represents time, and the vertical axis represents MFCC coefficient indices. The yellow dashed box highlights the specific coefficient range used in the correlation analysis. (B) Correlation coefficient matrix comparing MFCC patterns across different articulation conditions. Red indicates higher correlations (greater acoustic similarity), while green suggests lower correlations.