According to the phonation theory, adopting cutting notch in the circular saw, equipping samdproof hook, adding damping material tothe saw and pressing the work pieces tightly can achieve good effect.

• 根据其发声机理.；通过采取对圆盘锯边缘开槽；安装吸隔声罩；对锯片增加阻尼材料；夹紧工件等措施取得了较好的降噪效果。