We use the Ultrax Typically Developing dataset (UXTD) from the publicly available UltraSuite repository BIBREF19 . This dataset contains synchronized acoustic and ultrasound data from 58 typically developing children, aged 5-12 years old (31 female, 27 male). The data was aligned at the phone-level, according to the methods described in BIBREF19 , BIBREF25 . The data was recorded using an Ultrasonix SonixRP machine using Articulate Assistant Advanced (AAA) software at INLINEFORM0 121fps with a 135 field of view. A single ultrasound frame consists of 412 echo returns from each of the 63 scan lines (63x412 raw frames). 
 Question: What are the characteristics of the dataset?
synchronized acoustic and ultrasound data from 58 typically developing children, aged 5-12 years old (31 female, 27 male) data was aligned at the phone-level 121fps with a 135 field of view single ultrasound frame consists of 412 echo returns from each of the 63 scan lines (63x412 raw frames)