Aspiration is the main distinctive feature of consonants in Chinese, whereas voicing and palatalization as well as aspiration are all distinctive in Mongolian.

Objective To explore the spectro-mode features of unaspirated consonants of Chinese Putonghua produced by healthy, normal children and children with cleft palate.

The results of experimental study show that Chinese unaspirated and aspirated consonants as two phonemic categories can be established in JPL's perception and production.