product   Name: music box

cargo   No. : KX212 

package   Packing: packing bags

Product size: 75*35*65

Packing number: 300PCS

box   Rules: 60 * 45 * 55 CM

                                                                         Music box

In 1796, the Swiss Antoine fabre developed the cylindrical musical box, the world's oldest musical box. It is reported that the world's ancient music box Japan \"Kyoto arashiyama music box museum\" collection, only in Shanghai public display for one year. Born in 1796, the music box is so small, only about 10 centimeters high. Invented by watchmaker Antoine fabre, it is actually a very practical and luxurious solid gold seal with a music box hidden in the bottom. When people wound the ring at the top of the stamp, the switch on the pedestal began to play. Antoine fabre's invention used \"a cylinder device and a metal comb that tuned the melody to make music by plucking pieces of metal\".

The principle is that the power drives the sound tube with a small bulge on the surface to rotate at a constant speed. When the bulge passes through the sound bar of the sound board, the reed will be plucked (first slowly lifted, then suddenly lowered) to make the reed vibrate according to the set vibration frequency and produce the set sound. The sound board part of the music box is cut on a piece of elastic steel plate with the same length but different thickness (thickness and thickness according to the set vibration frequency). A bump on the drum is equivalent to a note in a musical notation. A drum according to the convex point set regularly, the drum rotation, convex points across the edge of the sound board, due to the different convex points, so that the pronunciation is different, plus the role of damping, so that the drum to do uniform rotation, a rotation down generally ordinary movement in 8-17 seconds, this is enough to express the climax of a piece of music; Of course, high-end music boxes typically cycle between 30 seconds and 8 minutes