｛XingHe JiaoYe Qin｝-progress0731

2021-07-31

Backboard fine-tunning of the Jiaoye Qin’s

In the regular form (shape) of Qin sound, the soundboard uses the midrange as the main tone and the bass as the sub-tone, and the backboard uses the bass as the main tone and the mid-range as the sub-tone, blending with each other form the Qin sound that we can hear and feel. Therefore, the tuning of the backboard and the soundboard complement each other, and overall the tone is balanced with the structure of seven-string tensionwhile taking equal balance as tuning the Qin tone even the timbre.

The backboard tuning of the Jiaoye Qin’s will intermodulate according to the natural resonance frequency of the soundboard. For example, the resonance frequency of Qin across the CDFGA tone. Assuming that the panel has D and F as the main tones, the backboard can adjust the resonance frequency to about 32Hz, that is, C and A can be the main tones. In some cases, the tone of the soundboard and backboard can be interchanged or switch, and the equal loudness curve can be understood as adjusting the connection and ratio of the high and low pitch of Qin tunning.

The Jiaoye Qin can be correct in the later stage according to the tone deviation after the soundboard and backboard bonding, so it is more flexible than the regular Guqin but the operation difficulty will be slightly higher. The “Goose feet” (the endpin feet) part can also choose the slot carving in advance or later according to the tone transition of the current Qin (each of soundboard and backboard).