Several vocal-tract models were reviewed, with special focus given to the sliding vocal-tract
model [T. Arai, Acoust. Sci. Technol. 27 (6), 384–388 (2006)]. All of the models have been …

This paper describes vocal-tract models that we have developed and their applications in
education in acoustics. First, we grouped the representative models into two major …

Students in acoustic phonetics and speech science classes often do not have much
technical background; an intuitive means to teach acoustic phenomena to them would, thus …

Diseases occurring near the vocal cords, such as laryngeal cancer, share the initial
symptom of hoarseness of voice. The GRBAS (grade, roughness, breathiness, asthenia …

Pronunciation has received relatively little attention within the field of Arabic second
language teaching and learning, particularly with respect to the more prominent areas of …

Autism spectrum disorder (ASD) is characterized by atypical and idiosyncratic language,
which often has its roots in pragmatic deficits. Identifying and measuring pragmatic language …

Whistling has become more popular in recent years.“Whistling competitions” are being held
in Japan since 2005. However, it can be difficult to teach some people how to whistle. One of …

To visualize how the vocal tract is positioned in the head, we designed a series of head-
shaped models in our education system [3, 11, 12]. There are two major types of head …

Arai has developed several physical models of the human vocal tract for education and has
reported that they are intuitive and helpful for students of acoustics and speech science. We …

Physical models of the human vocal tract with a moveable tongue have been reported in
past literature. In this study, we developed a new model with a flexible tongue. As with …