Resource: The DKU-JNU-EMA Electromagnetic Articulography Database

Reference The DKU-JNU-EMA Electromagnetic Articulography Database
Date of Submission July 18, 2019, 7:16 p.m.
Status accepted
ISLRN 147-070-436-975-2
Resource Type Primary Text
Media Type Text, Audio
Language Hakka Chinese, Min Nan Chinese, Yue Chinese
Format/MIME Type audio/x-flac, text/plain
Size 3122232 KB
Access Medium Web Download


The DKU-JNU-EMA Electromagnetic Articulography Database was developed by Duke Kunshan University and Jinan University and contains approximately 10 hours of articulography and speech data in Mandarin, Cantonese, Hakka, and Teochew Chinese from two to seven native speakers for each dialect.

Electromagnetic articulography (EMA) is a method of measuring the position of parts of the mouth and their movement over time during speech and swallowing. Measurements are made from sensors placed in the mouth to capture real-time vocal tract variable trajectories. EMA is used in linguistics and language-related research to study phonetics, in particular, articulation (how sounds are made).


Articulatory measurements were made using the NDI electromagnetic articulography wave research system. Subjects had six sensors placed in various locations in their mouth and one reference sensor was placed on the bridge of their nose. For simultaneous recording of speech signals, subjects also wore a head-mounted close-talk microphone.

Speakers engaged in four different types of recording sessions: one in which they read complete sentences or short texts, and three sessions in which they read related words of a specific common consonant, vowel or tone.

Audio data is presented as single channel, 16kHz, 16-bit flac compressed wav files. Articulography data is stored as UTF-8 plain text files.

Version 1.0
Creator Xiaoyi Qin , Xinzhong Liu , Zexin Cai , Ming Li
Distributor Linguistic Data Consortium
Rights Holder Portions © 2019 Duke Kunshan University, © 2019 Jinan University, © 2019 Trustees of the University of Pennsylvania