DETERMINATION OF THE ACOUSTIC ABSORPTION COEFFICIENT IN WOODS USED FOR CHORDOPHONES

Livia Calderon J.O.; Yoza Yoza L.S.; Pascual Acevedo Mallque M.; Mota Docha M.C.; Arellano Valz A.M. · Floresta (2025) · DOI: 10.5380/rf.v55i1.96581

Resumen

The aim of this study was to characterize the sound absorption of 13 wood species used by luthiers in Peru by measuring their sound absorption coefficients using an acoustic impedance tube built according to the ASTM C384 standards. The densities, moisture contents, and other acoustic properties of the samples were determined. The results showed that the sound absorption coefficients ranged from 0.037 to 0.119 at low frequencies, 0.019 to 0.063 at mid frequencies, and 0.033 to 0.112 at high frequencies. We concluded that the wood species palisangre (Brosimum rubescens) and palo azufre (Symphonia globulifera) exhibited good acoustic absorption qualities for the construction of the backs and sides of chordophones.

Instituciones: Universidad Nacional Agraria La Molina