| 摘要 |
An illustrative characterization of the invention depicts the cone shaped bow enabling the bassist to bow one string of the electric bass guitar singularly, bow two strings simultaneously or bow three or four strings of the electric bass guitar simultaneously. The use of a cone shaped rotating bow allows the bassist to hold the bow in the right hand and play pizzicato with the fore-finger. Bowing the string(s) is actuated by depressing the foot-switch and pressing the cone shaped bow against the string(s) to be bowed on the electric bass guitar. The foot-switch activates the cone shaped rotary bow to rotate clockwise between 2000 and 2400 revolutions per minute. The quality of the sound produced by this invention depends on two factors. First, the cone shaped rotary bow consists of a plastic cone that is wrapped and glued with horsehair. The cone is pressed on a grommet thereby mounting the cone to a direct current DC 6-9 volt electric motor. Factor one, the quality of the sound produced by this cone shaped rotary bow is produced by applying sufficient amounts of rosin on the cone shaped bow. Secondly, the quality of the sound produced by this invention depends on how the cone shaped bow impacts the string(s). Depressing the foot-switch activates the bow, pressure exerted on the string(s) by the bow is the means for producing different sound qualities. Factor two, less pressure exerted on the string(s) by the bow produces softer qualities of the bowed sound, increasing amounts of pressure exerted by the bow on the string(s) of the instrument produce a more intense impact.
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