Sound power level measurement of the Chinese traditional plucked three stringed instrument-Big Sanxian
WU Li-ling · Shengxue jishu · 2009
Big Sanxian is one of Chinese traditional plucked three stringed instruments.But up to now,its sound power level(SWL) has not been determined.In this study,sound power measurements of the Big Sanxian are performed in a reverberation chamber according to ISO standard and Chinese national standard.Two qualified musicians play two different Big Sanxians in the chamber,while the sound pressure levels of 1/3 octave bands are recorded and analyzed by means of 4-channel real-time analysis.Typical values of the radiated sound power levels of Big Sanxian are obtained through averaging,when three representative single notes G,g and g1,a music scale and a folk song are performed at four dynamic levels(pp,mp,f and ff) respectively.The forte sound power level of performing a scale is suggested as the most representative value of the sound power of the Big Sanxian instrument.