2021蕉葉琴0609進度

2021-06-09

蕉葉琴調音前準備

由於蕉葉琴獨特的波浪造型而使得調音方案與常規造型的古琴有所不同，在配件鑲嵌後就開始提前預估因後期裹布與刮灰胎所增加的塗層厚度，並在後期切削硬木配件的時候，可以預留一定的容差值給臨界高度。

而蕉葉琴在造型後，面板與底板在分離後各自有半波的特殊形態。所以在調音階段開始就需要明確劃分三大階段：響板定音、響板匹配與合琴後微調。而每一步都要保留相當彈性可調的範圍給下一步進行校準。

簡而言之就是在配件鑲嵌可用的情況下，初步預估古琴面板可通過挖薄以達到的最佳與最低自然頻率範圍，從而提前做好整體與局部沉降挖薄的規劃。

Due to the wavy shape of the Jiaoye Qin, the tuning work is different from the common Guqin. After the accessories are inlaid, and begin to estimate in advance the coating height that will be increased due to the cloth wrap and ash scraping, and when cutting hardwood parts later, a certain tolerance value can be reserved for the critical height.

After the Jiaoye Qin shaped, the soundboard and backboard each have a special half-wave shape after being separated. Therefore, at the beginning of the tuning stage, three stages need to be divided cleary: the pitch expect, tone fine-tunnig and the final timbre fine-tunning. And each step must reserve a fairly flexible adjustable range for the next step to be calibrated.

In short, when the accessories are available, the best and lowest natural frequency range that the Guqin soundboard can be achieved by thinning is preliminarily estimated, so as to plan the overall and partial thinning in advance.