A new tuning method for glass harp based on a vibration analysis that uses a finite element method.

Oku, Keiichi; Yarai, Atsushi; Nakanishi, Takuji

doi:10.1250/ast.21.97

Cited by 3 publications

(8 citation statements)

References 3 publications

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“…The values of Young's modulus and Poisson's ratio listed in Table 2 are almost the same as those in Ref. [2].…”

Section: Measurement Of Geometry and Materials Constantssupporting

confidence: 55%

“…The duration of the tone analyzed was 2 s. From Fig. 2, we can see that the rubbing tone has only small overtones and thus produces almost sinusoidal tones [1,2]. On the other hand, the tapping tone has rather large inharmonic components and the affect the timbre, although the pitch is the same as that of the rubbing tone.…”

Section: Spectra Of Tones Of Glass Harpsmentioning

confidence: 96%

“…Following Ref. [2], we also cut the cup in half after dividing a glass harp into a cup part and a stem part, and then the precise cross section of the cup was obtained using a copy machine (Fig. 1).…”

Section: Measurement Of Geometry and Materials Constantsmentioning

confidence: 99%

“…[1,2]; thus, the lowest four modes are denoted as (2,0), (3,0), (4,0), and (5,0) following Ref. [1].…”

Section: Finite Element Analysismentioning

confidence: 99%

“…In recent years, several experimental and analytical studies have been carried out on glass harps [1][2][3][4]. However, the analytical studies have been focused on the tuning of a commercially available wineglass by filling it with water and/or by cutting the outside of the bottom of the cup.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Vibrational analysis of glass harp and its tone control

Uchida

Kishi

2007

Acoust. Sci. & Tech.

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In this paper, we focus on the control of the tone of a glass harp during the process of manufacturing, and on the analysis of the vibration of the glass harp using a finite element method. First, the effect of various factors on results is studied, such as the element type that enables a good geometries approximation and the number of divisions on the accuracy of mode frequencies. Second, we examine how each mode frequency changes with the bulge of the glass harp. The results demonstrate that the use of a bulge is effective in controlling the pitch and the timbre. Third, the pitch can be varied over a wide range by changing the bulge of the cup. In particular, it can be finely adjusted by cutting the inside bottom of the cup so as to form of a small circular groove instead of using a conventional method, which involves cutting the outside of the cup.

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“…The values of Young's modulus and Poisson's ratio listed in Table 2 are almost the same as those in Ref. [2].…”

Section: Measurement Of Geometry and Materials Constantssupporting

confidence: 55%

Section: Spectra Of Tones Of Glass Harpsmentioning

confidence: 96%

Section: Measurement Of Geometry and Materials Constantsmentioning

confidence: 99%

“…[1,2]; thus, the lowest four modes are denoted as (2,0), (3,0), (4,0), and (5,0) following Ref. [1].…”

Section: Finite Element Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vibrational analysis of glass harp and its tone control

Uchida

Kishi

2007

Acoust. Sci. & Tech.

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Tuning of musical glasses: diploma project

Guignard¹

2003

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Water Volume Estimation by a Flicking Motion based on the Glass Harp Acoustics

Kurita¹,

Sobue²,

Ikeda³

et al. 2011

JRSJ

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In this paper, we present a water volume estimation method in various cups using the glass harp acoustics. When a rigid probe flicks a glass, sounds arise. Since the sounds alter depending on the water volume in the glass, we can utilize the sound information to estimate the water volume. In order to model the acoustics characteristics of various glasses, we propose the relational expression between the water volume and the vibration frequency that improves Oku's expression. By using the proposed relational expressions and a flicking motion by a robotic finger with a microphone, we confirm the proposed method can estimate the water volume with the accuracy of 1 ∼ 3%.

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A new tuning method for glass harp based on a vibration analysis that uses a finite element method.

Cited by 3 publications

References 3 publications

Vibrational analysis of glass harp and its tone control

Vibrational analysis of glass harp and its tone control

Tuning of musical glasses: diploma project

Water Volume Estimation by a Flicking Motion based on the Glass Harp Acoustics

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