Vibrations from the four strings are transmitted via the bridge to the front of the violin, and on to the back via the sound-post, a length of round wood wedged between front and back inside the box.

• 四根琴弦产生的震动通过琴桥传递到琴的正面，接着通过琴内部正板和背板之间一个圆柱状的音栓传到琴的背板。