In the side hall, musicians are assembling machines. These machines can automatically (spring drive) or manually (hand-cranked) music, called "Music Box".

It is the ultimate form of the music box.

On the side, Li Li listened to Wanbao, a worker at the Ministry of Works, who was part-time at Yuefu, to introduce the improvement of the music box.

The pronunciation principle of the music box is very simple. The protrusion on the drum keeps rotating with the drum, and pulls the soundboard (sound comb) like a comb. Soundboards of different lengths make different sounds and keep circulating.

A music box with complex structure can "play" more complex music.

With a large number of raised drums, it is equivalent to a music storage device. If the raised positions are carefully arranged, a specific music can be played.

Change the roller and you can play different music.

However, the protrusions on the roller are limited. With just one roller, the music that can be played is limited in length.

Putting one or several rollers can "delay" but the structure is complicated.

So, a single side with a raised disc was replaced.

Then there are disks with raised sides on both sides, which are one step closer to "delay".

A further improvement is the combination of sound combs, which are combined with a double-sided disc to play more complex music.

However, as the structure becomes more complex, the failure rate of music box will naturally increase.

Moreover, the more complex the structure, the more troublesome it is to maintain.

The quality requirements and durability of parts are also very high.

Therefore, only a few large music boxes that are "commercialized" can be manufactured. Among them, there are naturally indispensable official workshops that are managed by Shaofu Temple and Yuefu provides "technical support".

At present, the musicians assembled several music boxes are the products of the Shaofu Temple Workshop.

Wanbao often makes considerable contributions to the "setting" of these models of music boxes.

Based on his hobbies and familiarity with music, he participated in the improvement of music boxes, but Wanbao is often unfamiliar with mechanical structures and only optimizes the "sound quality" part of music boxes.

Referring to the amplification principle of the piano and pipa, a hollow "amplifier" was designed for the music box, making the sound of the music box much louder.

Li Li and Wanbaochang talked for a while. After the machine was installed, the musicians began to test the machine and slowly loaded a large plate of iron beads into the top of the machine.

Then tighten the spring and start.

A crisp and pleasant sound came from the trumpet of the machine, as if a large number of pearls fell into the silver plate, with clear and pure sound quality.

Li Li closed his eyes and listened to this wonderful music.

Such sound quality is not something that can be produced by conventional music boxes, so the "barrel music box" assembled by musicians is really good.

Wanbao is often immersed in this wonderful music and is proud of his masterpiece (the pronunciation principle comes from his creativity).

The pronunciation principle of the music box is the pronunciation of the raised toggle comb (sound board) on the roller.

The pronunciation method is "Di".

So, can we change the pronunciation method to "knock"?

Wanbao often doesn't understand machinery, but he thinks it can.

When he was a child, because he liked music, when he was intrigued, he had no musical instruments, so he used chopsticks to knock bowls, plates, bottles, and jars, which could also make wonderful music.

Of course, these containers must be properly filled with varying amounts of water to have various sound quality.

He has been playing with himself for many years, and his understanding of percussion instruments is very comparable to that of people.

Therefore, based on the pronunciation principle of the music box, I went to the next level and came up with a new pronunciation method: knocking.

The implementation method is to let a large number of marbles fall in intervals and hit different sound boards to pronounce them. In this way, the limitations of the drum or turntable can be avoided and the "single playback time" of the automatic broadcasting machine can be extended.

Once the idea is established, how to implement it in mechanical structure is the business of technicians.

Many musicians, musicians, and mechanical technicians have finally made this music box through continuous efforts, and named it "Pinzi Music Box" to distinguish the music box.

Although the structure is also very complex, the drum/turntable device still needs to control the falling order and interval of the marbles, but it is more "longest" than the playing time of the drum/turntable music box.

Because of the "circulating ammunition supply device", the marbles that fall and hit the soundboard can be lifted again, enter the "circulating box" on the top of the machine, and enter a new playing cycle, and the "circulating playback" of the music box can be realized.

This is the biggest advantage.

Then, when the user starts this kind of music box, he can "loop" a more complex music as a "background music" when eating, reading, practicing calligraphy, and doing things.

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Li Li likes this kind of music box very much because it is very close to some scenes in the daily life of later generations:

Mobile phones, computers, car audio and various music players can play music that people like to listen to in a loop, soothe Tao Yi's sentiment and soothe her mood.

From then on, he can also enjoy the treatment of "single loop" or "sequential playback" in this era.

"Pinzi Music Box" keeps playing music. Li Li was addicted for a long time before he came to his senses. He opened his eyes and looked at Wan Baochang: "The creativity of Yuanwailang is really amazing."

Wan Bao was certainly excited to be praised by the emperor, but he did not dare to take credit for it. He was very modest and said that this was all the credit of the designer, after all, he was not good at mechanical engineering.

"I want to reward you because I have made merits." After Li Li finished speaking, he looked at the one-person-high "platinum music box" in front of him, and had an idea:

"I will give you two staple music boxes, and Shaofu Temple provides a lifetime warranty!"

Wanbao Chang was overjoyed when he heard this and quickly thanked him for his reward.

This "stick music box" is not cheap. Although it is to be sold as a product, the price is very high, and the "exhibition price" is nearly a thousand cents of a unit.

Not to mention the subsequent maintenance costs.

Although ordinary people cannot afford such expensive and complex products, this kind of music box was not designed for civilians since its inception.

It is sold as a luxury product to wealthy families who talk about pomp and like to compete.

Or sell it to various entertainment and consumption places, allowing merchants to place them in private rooms and even the lobby, using magical "loop music" to show the wealth of their store.

After all, many people go to the restaurants and private rooms to eat, and talk about important matters while eating. Sometimes they don’t want others to be present, including musicians.

If you have this kind of music box, it will allow guests to listen to wonderful music and talk about things that you don’t want to be heard by others without any scruples. It is a great choice.

After a while, it was too late in Wanbao, and the emperor had nothing to explain. He quickly took his leave and went out before the palace gate was locked.

Li Li was soon left in the hall. He came to the "Pinzi Music Box", turned around and looked at the machine carefully.

After a long time, I reached out to turn the handle and drove the machine to operate with human power.

With a slight sound of machine brackets, the iron marbles in the "bomb box" at the bottom of the machine are slowly lifted to the top of the machine and enter the "drop zone".

Then there is an orderly fall, falling on the soundboard, making a pleasant sound.

The sounds gather together to form wonderful music.

Li Li listened to the music and narrowed his eyes again.

But in his mind, this was another voice.

The "projection principle" of the staple music box has broken through the "difficulty" in a certain field, making this pass that blocked countless people in the past and became a window paper.

Li Li shook his handle and continued to supply the bullets.

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