| 摘要 |
A wishbone shape articulated lateral drive means (19, 20) is mounted on the inner panel of the back plate (13) in a stringed instrument to energize and drive said plate (13) sideways causing sound box (15) panels to generate phase distinct vibrations as a result of sound boards' (12, 13) unison flapping movement so that clarity and response of tones are improved. In order to combine the improved sound with the original sound of the instrument for increasing the tonal range, manual switching capability (21) is provided within the sound box (15) for selection of tone colors from outside the instrument. Treble enhancing means (45, 47) additionally provided to brighten the instruments' sound in general and highlight the treble in particular so that tone color is improved beyond that which can be provided by conventional instruments. |
