This supplementary materials aim to support the text paper to expand its analysis. It contains the R code for audio descriptors analysis; a math presentation of the functions used in this study; audio files used (100 in total in .wav format); .csv files extracted by the libxtract library from Sonic Visualiser; the preliminary results by MANOVA analysis (in .csv); the boxplot pairwise comparison from both R and Sonic Visualiser methods (for all the 100 audio files in .png file); the scatter plot from all audio descriptors used in this study for each analysis method (R and Sonic Visualiser in .png file)