bhattacharyya_mvnorm    Bhattacharyya distance and affinity under
                        multivariate normality
boot_jsd                Bootstrap JSD for each group
estimate_bhatt          Estimate Bhattacharyya distance, globally or by
                        group
estimate_jsd            Estimate Jensen-Shannon divergence or distance
                        between two categories
estimate_overlap        Estimate proportional overlap globally or by
                        group
estimate_pillai         Estimate Pillai trace, globally or by group
extract_mfcc            Extract MFCCs for vowel segments
global_boot_jsd         Global JSD with bootstrap confidence interval
global_pillai           Global Pillai trace (point estimate)
hier_boot_jsd_model     Hierarchical bootstrap for JSD-based models
jsd                     Jensen-Shannon divergence for discrete
                        distributions
jsd_kde_nd              n-dimensional JSD via multivariate kernel
                        density estimation
jsd_summary             JSD summary: point estimate and optional
                        bootstrap per group
kl_div                  Kullback-Leibler divergence for discrete
                        distributions
percent_overlap_kde     Proportional overlap between two distributions
                        via KDE
phontrast               Compute and compare phonological contrast
                        metrics
phontrast_palette       Okabe-Ito color palette used by phontrast plots
pillai_overlap          Pillai trace for multivariate overlap
plot.phontrast_contrast
                        Plot a phontrast() result directly
plot_category_pca       Plot a PCA projection of multidimensional
                        category space
plot_category_space     Plot phonological categories in acoustic space
plot_contrast           Distribution-aware contrast plot for two
                        categories
plot_overlap_metrics    Plot overlap metric comparisons
prepare_jsd_beta        Prepare JSD estimates for beta regression /
                        GAMs
scale_colour_phontrast
                        Okabe-Ito discrete color and fill scales
speaker_bhatt           Bhattacharyya distance by group
speaker_jsd             Group-level JSD point estimates
speaker_pillai          Group-level Pillai scores
theme_phontrast         Publication theme for phontrast plots
