• Digital audio or audio-video recordings should be performed, with a microphone of high quality.
  • The microphone should be placed so that the person's speech is captured optimally, and other noise is avoided.
  • The background of the video recording should be "clean" and with good enough light.
  • In research, one person should operate the camera with focus on the person's head and shoulders. Pictures should be displayed from the front so that the person does not look down. A clear image of the face should be recorded with no visual distraction (Lohmander et al., 2009).


* Lohmander A, Willadsen E, Bowden M, Henningsson G, Persson C, Hutters B. Methodology for Speech Assessment in the Scandcleft Project – an international randomised clinical trial on palatal surgery: experiences from a pilot study. Cleft Palate-Craniofacial Journal, 2009; 46:347-362.