Purpose Data on vowel formants have been derived primarily from static measures
representing an assumed steady state. This review summarizes data on formant frequencies …

Objective The present study aimed to investigate the vocal tract and glottal function during
and after phonation into a tube and a stirring straw. Methods A male classically trained …

Publisher Summary Two types of facts about singing are considered in this chapter. One is
the choice of acoustic characteristics of vowel sounds that singers learn to adopt and that …

Purpose Literature was reviewed on the development of vowels in children's speech and on
vowel disorders in children and adults, with an emphasis on studies using acoustic methods …

Phonation into a glass tube is a voice training and therapy method that leads to beneficial
effects in voice production. It has not been known, however, what changes occur in the vocal …

Phonation into a straw is used in voice training and therapy. This study investigated its'
effects on the vocal tract adjustments. Magnetic resonance images were taken from one …

High vertical laryngeal position (VLP), pharyngeal constriction, and laryngeal compression
are common features associated with hyperfunctional voice disorders. The present study …

Background The voice carries various information produced by vibrations of the vocal cords
and the vocal tract. Though many studies have reported a relationship between vocal …

Lombard and Clear speech represent two acoustically and perceptually distinct speaking
styles that humans employ to increase intelligibility. For Lombard speech, increased spectral …

Acoustic characteristics of classical opera singing differ considerably between the Western
and the Chinese cultures. Singers in the classical Peking opera tradition specialize on one …