UTI recordings – the recording studio
Recordings took place in a purpose-built UTI recording studio at Queen Margaret University, Edinburgh. A high-speed Sonix RP ultrasound machine was used with automatic audio-ultrasound synchronization recording at 121 frames per second.
Figure 5: Long and short-handled microconvex probes; a probe fitted in the stabilising headset; the high-speed Sonix RP ultrasound machine.
All noisemaking equipment such as the ultrasound machine and PC CPU were in a room adjacent to the one where the recordings were made. Articulate Assistant Advanced software version 3.14 beta G was used to record simultaneous audio and UTI. A short-handled microconvex probe set to an angle of 150° was used, fitted to a stabilising headset, worn by participants (see figure 5). Orthographic stimuli were presented to the speakers via a monitor. A change in screen colour cued the speaker to begin speaking. Audio recordings were made using a directional clip-on microphone clipped to the side of the ultrasound headset.