If you want to use combine several acoustic parameter (feature) sets with nkululeko, you might state

[FEATS]
type = ['mld', 'praat']
features = ['JitterPCA', 'meanF0Hz', 'hld_sylRate']

This would combine the

• hld_sylRate feature from MLD
• JitterPCA feature from Feinberg's Praat features and
• meansF0Hz feature from Feinberg's Praat features

Of course you could omit the features entry and simply use all of them.

It's interesting to see how many emotions from Berlin Emodb can still be recognized with only these three parameters: