High-speed imaging of the voicing source in laryngectomees during production of voiced-voiceless distinctions for stop consonants.
This study presents results from high-speed imaging recordings of the voice source, that is the pharyngo-esophageal segment, in four laryngectomized men. The subjects were asked to produce VCV-syllables with voiced and voiceless stop consonants during simultaneous high-speed imaging recordings and audio recordings. A general and detailed visuo-perceptual analysis of the shape and vibratory pattern in the pharyngo-esophageal (PE-) segment was made, as well as acoustical measurements of voice onset time (VOT) and closure duration for each syllable. The syllables were also audio-perceptually evaluated by five expert listeners. Results show that the subjects had a high overall intelligibility as judged by the listeners. All four subjects were able to make opening gestures in the PE-segment while producing voiceless stop consonants. In cases where misperceptions were predominant, the acoustical analysis with spectrograms and the detailed analysis of the vibration in the PE-segment gave information about probable causes of the mishearings.
Lundström
Elisabet
E
Department of Logopedics and Phoniatrics, Karolinska Hospital, Stockholm, Sweden. elisabet.lundstrom@ks.se
Hammarberg
Britta
B
D000328:Adult; D006801:Humans; D007089:Image Enhancement; D007825:Laryngectomy / Q000534:rehabilitation*; D007828:Laryngoscopy / Q000379:methods; D008297:Male; D008875:Middle Aged; D010699:Phonation / Q000502:physiology*; D013061:Speech Acoustics; D013068:Speech Production Measurement; D013072:Speech, Esophageal / Q000379:methods*; D013637:Tape Recording; D014743:Videotape Recording; D014827:Vocal Cords / Q000502:physiology; D014833:Voice Quality