electric signal so as to give the tones the timbre close to that of the acoustic double-bass. The electric signal is supplied to a sound system, and the unique tones are produced in the sound system. The loudness is easily changeable. In fact, the loudness is drastically reduced to a tenth, and the acoustic energy is of the order of a hundredth. The four strings of a prior art electric stringed musical instrument are averaged at xe2x88x9220 dB. The drastically reduced loudness is as faint as whispers of human voice. Using the electric stringed musical instrument, the string player practices a tune at his or her home anytime.
FIGS. 1 and 2 show the prior art electric bowed stringed musical instrument. The prior art electric bowed stringed musical instrument4b is curved like the outline of a half of the body forming a part of the acoustic double-bass. The shaping board 4b is connected at both ends thereof to the side surface of the trunk 2, and is spaced from the trunk 2 between the connected portions. Any soundboard is not put over the space between the trunk 2 and the shaping board 4b. For this reason, any resonator is not formed in the prior art electric double-bass.
While a string player is bowing for playing the prior art electric double-bass, the shaping board 4b and the yoke 4a are held in contact with player""s body for keeping the attitude of the prior art electric double-bass. For this reason, the shaping board 4b and the yoke 4a are