Male-to-female transsexual individuals frequently experience difficulties in increasing the fundamental frequency so that they can pass as members of the preferred gender. Female-to-male individuals may also meet with vocal problems although hormone treatment lowers fundamental frequency. The purpose of this study was to explore the transsexual individuals who, as part of their reassignment process, were referred to the voice clinic at the Sahlgrenska University Hospital in Göteborg, Sweden, between 1991 and 2002. The group comprised 22 male-to-female and 3 female-to-male transsexuals. Video recorded laryngeal examinations revealed basically normal conditions. More than half the patients showed supraglottal constriction on phonating at both habitual and preferred levels. A comparison between acoustic analyses before therapy and at follow-up visits showed increased fundamental frequencies for male-to-female individuals (p = < 0.01). Vocal fatigue was reduced. Degree of satisfaction with the post-therapy voice was not related to number of therapy sessions.

The aim of this study was to describe the aerodynamics related to velopharyngeal function during speech in bilabial, dental, and velar articulatory positions in Swedish speakers. Repeated syllables including voiceless stop consonants and sentences including combinations of voiceless stops and nasal consonants were uttered by 11 normal adults. Oropharyngeal pressure was assessed with a miniature pressure transducer positioned transnasally, in combination with measurement of nasal pressure and nasal airflow. The corresponding velopharyngeal opening area was estimated. The results suggest that the velopharyngeal function during stop consonants is similar in different articulatory positions. Differences in oropharyngeal pressure and nasal airflow between bilabial versus dental and velar positions were found, presumably due to differences in volume and compliance of the vocal tract.

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