| 摘要 |
A portable tuning apparatus comprising keys and a rotatable tuning plate is provided. Each key comprises two opposing connector arms separated by a cranked section and extending perpendicularly from opposing ends of the cranked section. A first opposing connector arm of each key is configured to engageably rotate a lug of multiple lugs that support a drumhead of a percussion instrument. A second opposing connector arm of each key slidably engages with one of the openings arranged at predetermined locations on the rotatable tuning plate. Rotating the rotatable tuning plate causes the second opposing connector arm along with the cranked section of each key to orbitally revolve about the first opposing connector arm of each key. This orbital revolution causes an axial rotation of the first opposing connector arm of each key engaged on the lug and imparts a uniform tension to the lugs for tensioning and tuning the drumhead. |
