The processing methods of increasing the tone quality of bamboo and wood instruments
For thousands of years, when people make musical instruments which are made of bamboo and wood, they have done nothing with the material of resonator except for the need of dry or model.
For example, when people made the violin, "they use the wood materials which were through completely dry one or two-hundred years. (On the page of 414 of "The Manual of Music knowledge (Book on)")
Such bamboo and wood material, its oscillation sound and performance of propagating acoustics were not very good. So this kind of bamboo and wood instrument have three shortcomings below:
Fist, its resonance sound is little. And its tone quality is quite different. The bamboo and wood instrument with top grade of tone quality are scarce. It was estimated that can't reach one hundredth of its total.
Second, the same tone quality of Qin (the name of a kind of musical instrument) can' t be made of the same kinds of bamboo and wood material. Such as the jinhu, which is made of Nan bamboo. But its tone quality was quite different. And pad auks erhu (Chinese two-stringed musical instrument) and the violins were the same.
Third, the bamboo and wood instrument that people made in the past, its sound volume and tone quality were not very good when it was just finished. Only when it through many years, its tone quality can be changed purer and its sound volume can get bigger.
The advantage of this processing method:
First, it can make bamboo and wood material have excellent performance of oscillation sound and propagate acoustics. So this kind of bamboo and wood material is the best for making into resonate trunk.
Second, this method can not only increase the tone quality and the resonate sound, but also can guarantee that we can use the same kinds of bamboo to made the same grade instruments. For example, all mahogany or spruces can be made into the top grade erhus or the violins and cellos.
Third, if we use this method, the sound of the bamboo wood instruments which are just finished can reach the optimum condition.
Forth, the processing method is simple and convenient. Its production cost is low. It takes about 20 days to complete the whole course. And it is non-poisonous, harmless and non-polluted. It costs 20 yuan to process a erhu resonate trunk. And processing a violin needs 40 yuan. Those violins which are cost one hundred thousand even more than one million dollars only cost hundreds yuan. if we use this method.
It must be a great change of the making history of bamboo and instrument.
There are some samples. Welcome to examine.
Inventor: Li Zheng-zhong Professor. Post code: 564707
Address: Guizhou Chitianhua Group Corporation retired office, Gui zhou province。
China Telephone: (0852) 2878163