Studies on the Air Pressure in the Vocal Tract during Phonation

Intranasal Sound Pressure during Utterance of Speech Sounds

“…This suggestion is supported by the fact that during utterance of the vowels following nasals a soft palate elevation is incomplete as shown in radiocinematographic studies by Umeno (1962) andHiroto et al (1962), electromyographical studies by Hiroto et al (1962) and cinematographic studies by Takahashi et al (1962). Yano (1963) measured intraoral air pressure during the production of speech sounds, dem onstrating th at the pressure was higher for voiceless consonants than for voiced con sonants.…”