A dataset of ultrasound and audio recordings from children with speech sound disorders




Session Description
Suit Suitability session to determine if child needs speech therapy
BL Baseline session before therapy (1-2 sessions)
Mid Mid-point session, halfway through therapy
Post Post-therapy session, immediately after therapy ended
Maint Maintenance session, some time after therapy ended
Therapy Therapy sessions

Data Types

Core data types

Data type Description
wav speech waveform
ult raw ultrasound data
param ultrasound parameters
txt prompt text with date/time of utterance recording

Additional data

All labels are provided in Praat's TextGrid format.

Data type Description
slt-labels manual annotation from SLT, when available. See [2] for details
speaker-labels speaker diarization identifying therapist (SLT) and child (CHILD) speech
word-labels automatic word-level alignment
phone-labels automatic phone-level alignment

File IDs

Individual recordings are indexed for each session according to their recording times. See the prompt text file for recording date/time.

Each file ID also includes a prompt type identifier. See Data for details.


[1] Eshky, A., Ribeiro, M. S., Cleland, J., Richmond, K., Roxburgh, Z., Scobbie, J., & Wrench, A. (2018) Ultrasuite: A repository of ultrasound and acoustic data from child speech therapy sessions. Proceedings of INTERSPEECH. Hyderabad, India.

[2] Cleland, J., Scobbie, J. M., Heyde, C., Roxburgh, Z., & Wrench, A. A. (2017). Covert contrast and covert errors in persistent velar fronting. Clinical linguistics & phonetics, 31(1), 35-55.

[3] Cleland, J., Scobbie, J. M., Roxburgh, Z., Heyde, C., & Wrench, A. A. (Under Revision).  Enabling New Articulatory Gestures in Children with Persistent Speech Sound Disorders using Ultrasound Visual Biofeedback. Journal of Speech, Language, and Hearing Research.