节拍器(Metronome),早期的样式在17世纪末就已经出现了,此后人们不断尝试改进。1816年梅尔策尔基于荷兰发明家温克尔的设想,制作了第一台现代意义上的节拍器。机械节拍器是根据钟摆原理而制,内置发条驱动,摆杆上游码可上下调动,以调整速度,并和面板上的刻度相对照,可知每分钟来回摆动的次数。1938年,电子节拍器问世,家长不必再替琴童劳神费力地去上发条。随着时 The Metronome, an early style that appeared at the end of the 17th century, has since been constantly tried to improve. In 1816 Melzel created the first modern metronome based on the idea of ​​the Dutch inventor Winkel. Mechanical metronome is based on the principle of pendulum system, built-in winding drive, swinging bar upstream code can be adjusted up and down to adjust the speed, and the scale on the panel and contrast, we can see the number of swings back and forth per minute. In 1938, an electronic metronome came out and parents no longer had to work harder on the clockwork. With time