Wood Science and Technology

, Volume 39, Issue 1, pp 77–85 | Cite as

Chemical treatment of wood for musical instruments. Part I: acoustically important properties of wood for the Ranad (Thai traditional xylophone)

  • Chaloampol Rujinirun
  • Pranee Phinyocheep
  • Wudhibhan Prachyabrued
  • Nikhom Laemsak
Original

Abstract

The purpose of this study is to determine the important acoustic properties of wood for making Ranad bars and the resonator box. The woods used in this study were separated into two groups. The first group is the type of wood that has been used to make Ranad for centuries: Ching-Chan (Dalbergia oliveri Gamble) and Ma-Had (Artocarpus lakoocha Roxb.) for making the bars, and Ka-Nun (Artocarpus neterophylla Lamk.) out of which the resonator box is made. The second group comprises woods that are abundant in Thailand and are genetically related to the first group. The physical and mechanical properties of the woods in both groups were measured including the specific dynamic Young’s modulus (E/ρ), density (ρ), hardness (H), acoustic conversion efficiency (ACE), and sound refraction coefficients (|Γ|). The results revealed that high and consistent |Γ| were crucial factors of the Ranad bar properties in addition to E/ρ, ρ, and H. The results from measurements made on the resonator box wood revealed that high E/ρ, ACE, and high and consistent |Γ| were its crucial properties.

References

  1. Bork I, Meyer J (1985) On the tonal evaluation of xylophones. Physikalisch- Technische Bundesanstall Braunschweig, GermanyGoogle Scholar
  2. Holz D (1974) On some important properties of non-modified coniferous and leaved woods in view of mechanical and acoustical data in piano soundboards. Archiwun Akustyki 9:37–57Google Scholar
  3. Holz D (1996) Acoustically important properties of xylophone-bar materials: can tropical woods be replaced by European species? Acta Acust 82:878–884Google Scholar
  4. Yano H, Minato K (1993) Controlling the timber of wooden musical instruments by chemical modification. Wood Sci Technol 27:287–293CrossRefGoogle Scholar
  5. Yasuda R, Minato K (1994) Chemical modification of wood by non-formaldehyde cross-linking reagents. Part 1. Improvement of dimensional stability and acoustic properties. Wood Sci Technol 28:101–110Google Scholar

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Chaloampol Rujinirun
    • 1
  • Pranee Phinyocheep
    • 1
  • Wudhibhan Prachyabrued
    • 2
  • Nikhom Laemsak
    • 3
  1. 1.Department of Chemistry, Faculty of Science and Institute of Science and Technology for Research and DevelopmentMahidol UniversityPhayathaiThailand
  2. 2.Department of Physics, Faculty of ScienceMahidol UniversityPhayathaiThailand
  3. 3.Department of Forest Products, Faculty of ForestryKasetsart UniversityBangkokThailand

Personalised recommendations