Introduction

Studying voice and speech quality is of importance for evalution of voice rehabilitation. Judgment of voice and speech quality needs to be multi-dimensional. In a study by van As et al. (2001) such a multidimensional protocol is proposed. The protocol consists of perceptual evaluations, acoustic analyses, maximum phonation time, videofluoroscopy, and the Voice Handicap Index (Jacobsen, et al. 1997). Depending on the goal of the investigation, one or more parts of the protocol can be carried out. For the Speech Language Pathologist perceptual evaluations are most important and clinically relevant. Complementing acoustic analyses can be considered a valuable (objective) adjunct to perceptual evaluations. The use of a quality of life questionnaire such as the Voice Handicap recordings (video recording of X-ray during swallowing and phonation) are suitable for judging the anatomy and morphology of the neoglottis. (Van As, et al. 2001). Usually, videofluoroscopy recordings are used for diagnosis and evaluation of swallowing and/or speech problems such as hypertonicity and spasm of the neoglottis.