2pMU7. Sound radiation from Caribbean steelpans.

Session: Tuesday Afternoon, Dec 04


Author: Brian Copeland
Location: Dept. of Elec. and Computer Eng., Univ. of the West Indies, St. Augustine, Trinidad
Author: Andrew Morrison
Location: Phys. Dept., Northern Illinois Univ., DeKalb, IL 60115
Author: Thomas D. Rossing
Location: Phys. Dept., Northern Illinois Univ., DeKalb, IL 60115

Abstract:

Besides radiating sound from the note area being struck, a steelpan radiates from neighboring note areas that vibrate sympathetically, from the areas between notes, and from the skirt [Rossing et al., Phys. Today 49, 24--29 (1996)]. We have used a two-microphone intensity probe to measure the sound field around steelpans when various note areas are excited with swept sine wave force in an anechoic room. The radiation patterns in planes parallel and perpendicular to the surface of the pan are plotted and analyzed.