Abstract:

For former researches were focusing on the small-size wood samples,this paper studied on the acoustic vibration property of full-size spruce wood soundboard of musical instruments by natural frequency measurement system of fast Fourier transform(FFT).Species included Picea glehnii,P.jezoensis,P.likiangensis and P.sitchensis.They were divided into three separate groups respectively.In the first group,the length of sample was less than or equal to 1 400 mm(L≤1 400 mm).In the second,that was more than 1 400 mm(L>1 400 mm).The third one was single species.The vibration property of each sample group was evaluating by comprehensive coordinate method and comprehensive marking method.The classified quality of the species was ranked:P.likiangensis>P.jezoensis> P.glehnii> P.sitchensis.Moreover,it showed a significant correlation between the results of these two statistics methods.It indicated that the method could be suitable for evaluating vibration properties for musical instrument soundboard in real production.

Key words: musical instrument, soundboard, wood, vibration property