Relationship between Glottis Opening Area and Frequency Response in Human Whistling

Mori, Masahiro; Fukuda, Saki

doi:10.1541/ieejfms.138.478

Cited by 1 publication

(1 citation statement)

References 3 publications

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“…In this context, endoscopic images were used to measure glottis opening area of test subjects who were whistling when data for the vocal tract model were created; calculation of amplitude characteristics of the vocal tract with regard to the glottis opening area showed that the mentioned problem (that some sounds with pitch corresponding to calculated resonance frequencies do not occur) can be theoretically explained. 4 In addition, as a result of detailed exploration of decline in gain and change in resonance frequency with expansion of the glottis opening area, it was found that taking glottis opening area into account can not only explain the problem of nonoccurrence of some sounds corresponding to resonance frequency calculated on the assumption of the closed glottis, but also reduce errors in resonance frequency. These issues are reported below.…”

Section: Introductionmentioning

confidence: 99%

Frequency response of the vocal tract considering the glottis opening area during human whistling

Mori

Fukuda

2020

Elect Comm in Japan

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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 the reasons is that theoretical information, including clear descriptions about how to whistle is scant. A better understanding of the principle would be beneficial to both the trainer and the trainee. In this study, the glottis opening area during whistling was measured via endoscopic imaging data. The amplitude characteristics of the vocal tract were determined by measuring the glottis opening area during whistling and calculating the transfer function of the vocal tract in conjunction with that area. By considering the glottis opening area, we could logically explain the fact that, in reality, some notes corresponding to theoretically calculated resonance frequencies did not occur, and we could obtain a calculation result that was close to the physical model. Furthermore, because the calculation result close to the physical model was only associated with certain glottis opening areas, it is evident that not only the shape of the vocal tract and the lip opening area, but also the glottis opening area is an important component of sound production during human whistling.

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Section: Introductionmentioning

confidence: 99%