Douglas H. Whalen, US-based PI, overall direction of the project.

Yi Xu, UK-based PI, author of the PENTA model and main author of the Praat scripts PENTA- trainer and AMtrainer.

Amalia Arvaniti, UK-based Co-I, expert on AM theory.

Santitham Prom-on, Thailand-based researcher, author of the qTA implementation of the PENTA model and CPP-local.

Fang Liu, UK-based researcher, experienced in tone and intonation in Mandarin and English

Wentao Gu, experienced in intonation modelling with the Fujisaki model

Hosung Nam, US-based researcher, author of TADA model.

Christian DiCanio, US-based researcher, experienced in tones in American languages.