Sound Power Level Measurement for Chinese Plucked Stringed Instrument Liuqin
WU Li-ling · Journal of Tianjin University Science and Technology · 2010
Liuqin is one of the plucked stringed instruments used in Chinese national orchestra.In this study,sound power level(SWL)measurements of Liuqin with 4 strings and 29 frets have been performed in a reverberation chamber,where two qualified musicians performed on their Liuqins respectively.The sound pressure levels of 1/3 octave band were measured by 4-channel acoustical measurement setup and typical values of the radiated sound power levels of Liuqins were calculated through averaging when 3 representative single notes g,d2 and g3,a music scale and a folk song were performed at pp,mp,f and ff dynamic levels respectively.Considering the fact that subjective acoustical sensation correlates well with the forte level in a music hall,the forte sound power level when a musical scale is performed is suggested as the representative value of sound power level of the Liuqin.