At some point, Gu Xiaobai was already facing the audience and sitting on the side of the stage.

In front of him, there was a table, which looked like an upright piano, but it was two circles larger than an upright piano. The positions of the keys were round short sticks, which had been streamlined and ergonomically processed.

On the top of the "upright piano", there are countless cables connected to the shelf above the stage.

Gu Xiaobai clasped his hands, pointed at a piano key in front of him, and tapped it lightly.

At that moment, the round rod-shaped piano key pulled the cable behind it. The cable passed through four or five pulleys, pulled a wooden heavy hammer, and slammed it down.

A bell that was one meter and a half long, firmly fixed on the bracket and almost unable to shake, was struck suddenly.

"Boom", a very rich and round C4 pitch sounded.

The mellow resonance of the bell body, coupled with the complex and mellow overall resonance, the moment the sound sounded, the audience present screamed "Wow" and screamed in surprise.

What kind of sound is this! So beautiful!

Is this the sound of chimes?

Yes, this is the sound of chimes.

But it's not exactly the same tone as traditional chimes.

Due to size limitations of traditional chimes, including those of Zeng Houyi, when the upper row of bells is struck with a higher pitch and a smaller bell body, there will be some disharmony, such as the kind that strikes broken iron pieces.

Unpleasant vibration sound.

After all, the vibration of the shell is much more complicated than the vibration of the string. It has too many harmonics, and it is difficult to achieve perfect harmony with its own overtones like the vibration of the string.

How to make a good sound is Gu Xiaobai's biggest challenge in building the "bell and drum piano" this time.

After Gu Xiaobai tried many methods, he finally decided to increase the size! Then increase the size!

The size of the bell body is increased to enhance its volume and the stability of the sound, and the pitch is adjusted by thickening the bell wall. At the same time, complex tuning technology is used to adjust the fluctuations of the bell body to the most harmonious

status.

This kind of processing technology and difficulty has almost reached the technical limit of the Spring and Autumn Period. Gu Xiaobai even brought many Ming Dynasty technologies to the Spring and Autumn Period.

I want to mess around, mess around! Anyway, Qin Shihuang is behind it all!

Burning books and trapping Confucianism, one after another, no records will be left, perfect!

In the pre-Qin era, people were so willful.

But its effect is perfect.

At this moment, the sound of this chime is actually close to that of a round bell. Only after the fundamental tone and several major harmonics are attenuated can the dissonance like a dragging tail be heard.

This disharmony is no longer a flaw, but a feature. It is part of its timbre and represents its identity. It is a chime bell, not a round bell.

The sound of a round clock can’t decay so fast!

And this is Gu Xiaobai's consistent attitude and inheritance, but he never adheres to it.

The bells and drums he wants to make are the pinnacle of traditional Chinese bells and drums, but they are definitely not clumsy reproductions of bells and drums from thousands of years ago. They have evolved and can keep up with modern aesthetics, and even

Can lead the trend!

The area in front near the "Carillon" is specially reserved for Peking University, the defending professors, and various review experts.

Two salty fish teachers are also sitting here at this moment. Next to them are many colleagues who are engaged in acoustics. Although everyone is considered a competitor this time, after all, this subject is very small. They usually attend various meetings without looking up.

See, we are already familiar with it.

The moment this perfect bell rang, he heard a series of exclamations ringing around him.

"How is it possible? What's going on?"

"really!"

"Is it the synthesized sound from the loudspeaker?"

"Listen carefully, the clock is vibrating!"

A layman listens to the excitement, and an expert listens to the rules. Although most people in the world do not have an absolute sense of pitch, let alone a pervert like Gu Xiaobai who can be accurate to 1 decimal place. But the human ear can distinguish between "harmony and harmony".

"No" is an instinct. A sound can be heard the moment it enters the ear.

To ordinary people, this harmonious and pleasant sound only makes people feel pleasant to the ears, but to those who are engaged in acoustics, they instantly think of countless contents.

Yes, as they have emphasized to countless people before, the mechanical design of this "bell and drum instrument" is not difficult, nor is the processing and manufacturing, as long as you have money!

What is difficult?

The hard part is tuning!

Human ears are sometimes so dull that they cannot distinguish between high and low sounds.

But sometimes it is so keen that it can distinguish between good and bad timbre better than any other instrument.

You know it as soon as you hear it!

It’s so obvious!

Behind the sitting area, Duan Guixin stood up with a roar.

what's the situation?

This kind of tuning?

Gu Xiaobai, is he finished?

"Impossible...impossible, it's just an hour..."

It is not difficult to tune a bell, but what is difficult is to tune the 57 copper bells on the entire shelf, and more than half of them are tuned to two tones!

No matter how perfectly this one is tuned, there are still 56 bells left!

The second is that every bell has a perfect tone. The key is that all the bells must be in tune and in tune!

A clock is not like a piano, which can be adjusted by tightening or loosening the strings. It must be done in one step!

How long did it take Gu Xiaobai to design this bell and drum instrument? Not all bells can be tuned in one step. For such perfect tuning, it would probably take dozens of them to be cast before one can be selected.

use?

Impossible, impossible...

Duan Guixin decided to wait. You can't just play this one note.

As long as you play the next note, you will be exposed.

But Gu Xiaobai didn't continue playing.

After pressing this note, he turned back and looked down the stage.

The pitch of this Yong bell is c4, which is almost in the middle of the sound range of this bell and drum, and its position is also exactly in the center of the entire shelf. The moment the Yong bell is struck, the bell suddenly lights up, and then

The light changes, and circles of ripple-like things spread in all directions and are transmitted to other nearby clocks. All the clocks light up in turn, and the slight resonance causes all the clocks on the entire stand to ring softly, and the light also

Flashing slightly.

Just like the timbre of a piano, it is never the resonance of a certain string. Its beautiful timbre comes from the resonance of all the strings in the entire body of the piano. The same is true for the "Piano of Bells and Drums".

The peculiar acoustic effect amplifies the volume of the bell and spreads it in all directions.

And the light did not stop directly, but after leaving the bell, it spread in all directions of the entire stadium. Obviously the special lighting effects of the bell were related to the lighting and stage beauty of the entire venue, and the fluorescent sticks held in the hands of the audience were

, also lights up at the same time.

Circles of sound patterns spread in all directions, spreading to the entire stadium within a second. After reaching the edge of the stadium, they were reflected back, forming complex interference fringes.

Listening to the gentle ringing of the bell that echoed in the ears, and watching the lighting effects that were surging back and forth throughout the venue, at that moment, the entire audience had goosebumps and their hair stood on end.

I go!

I want to blow it up!

Is this the bell and drum?

Great!

When the sound of the bell disappeared, the lights converged from all directions to the center, until the bell in the center of the shelf dimmed, and the whole place was plunged into darkness again.

It was quiet for three seconds, and then crazy cheers resounded through the sky: "Ooooooooooooo!"

This is Gu Xiaobai, with just one movement and one voice, he can make the whole audience go crazy!
Chapter completed!