Next, Zhao Xingsheng told Gu Xiaobai about the twelve equal laws, between each octave, according to the proportional way, divided into 12 equal parts, forming thirteen tones, and the frequency of each tone is the 12th root multiple of the previous tone of 2, which is an irrational number, which is approximately equal to 1.0594630943593.

As a science student, it is instinctive to figure out math problems, and Gu Xiaobai can figure it out very easily.

People are good teachers, especially Zhao Xingsheng, otherwise he would not be a professor, and teaching a smart student gives people a sense of accomplishment that is incomparable.

Speaking and listening one by one, in less than half an hour, Zhao Xingsheng had already explained the basic music theory to Gu Xiaobai.

Just when Zhao Xingsheng was still unsatisfied and was about to give Gu Xiaobai a history lesson, the three-point profit and loss method and the five-degree symbiosis law, Xiao Su, a graduate student over there, came over: "Teacher, the 'woo-too' generation of T2-F1-3 has come out!"

"What era?"

"2,700 years ago, early Spring and Autumn!"

"Sure enough, this is indeed a relic from the early Spring and Autumn Period!" Zhao Xingsheng's eyes lit up.

They have carried out preliminary dating according to other methods, and thermoluminescence is very accurate in dating the unearthed pottery, which can be used to corroborate.

Gu Xiaobai also came to the side of the pottery and wondered, "What is this?"

"It's called a woo, and it's an early ocarina. ”

Zhao Xingsheng looked at Na Tu, his eyes shining.

From the bottom of his bones, he has a love for this instrument.

"There are not many well-preserved woo doos, I really don't know how the ancients preserved, the ruins excavated this time are really a treasure......" Zhao Xingsheng shook his head while looking at it.

He really wants to blow it!

Finally, he couldn't help it, waved his hand and said, "Xiao Su, you go and prepare the instrument, let's measure the pitch." ”

I don't know what rhythm the ancients used, what instruments they used, what music they played, and how did they know what kind of music the ancients listened to?

Seeing Gu Xiaobai looking at him, Zhao Xingsheng sighed with emotion: "Sound, probably the last kind of information that human beings can record, in ancient times, human beings can paint in caves, countless artists, but also painted countless famous paintings; But before the invention of the phonograph, there was not a single word that could be recorded, no. ”

"Those glorious music and songs of ancient times have finally escaped and decayed in the long river of history, and our descendants can only rely on imagination and speculation to know what they are singing, listening to, and playing......

Zhao Xingsheng looked out the window and said, "If those musicians in ancient times had spirits, they must be full of resentment." And they, they must be watching me somewhere now, hoping that I can resurrect their voices and reappear in the world......"

Listening to his words, Gu Xiaobai couldn't help but substitute himself into it.

If it's you, and you finally make achievements in physics, but you don't have time to publish it, you'll hang up, and I'm afraid I'll jump up even if you die.

The resentment of so many musicians must be terrible when gathered......

Zhao Xingsheng sighed deeply, carefully brought the ocarina-like whine to his mouth, and tried the sound.

"Woo......" sound.

The voice of 2,700 years ago resounded in the laboratory.

Gu Xiaobai subconsciously shouted: "F4, no, it's a little lower than F4...... 345hz！”

"Huh?" Zhao Xingsheng was stunned, "Xiaobai, do you have an absolute sense of tone?"

However, even if it is an absolute pitch, it is impossible to hear it so precisely, how many hertz can be heard?

No kidding, okay.

A person who doesn't even understand music theory has absolute pitch?

Zhao Xingsheng glared at Gu Xiaobai, turned around and urged Xiao Su: "Xiao Su, Xiao Su, come over quickly!"

Over there, Xiao Su moved the equipment and came over, and looked at the teacher and Gu Xiaobai in wonder: "Teacher, what are you playing?"

Hearing Zhao Xingsheng's explanation, Xiao Su looked incredulous: "Teacher, I see that you are about to become Xiaobai's brainless fan, how can such a mysterious thing be possible." ”

Xiao Su didn't believe that his teacher was so powerful.

Xiaobai is a little older, singing the treble of C6 is amazing, the tenor of C6, what kind of concept is that!

Now you have such strong hearing?

People who study ancient musical instruments and ancient music must understand the rhythm of music, and Gu Xiaobai doesn't even understand basic music theory, how can he be so good.

It must be that my own teacher has started to have convulsions again.

Forget it, anyway, the teacher here has the final say, and Xiao Su can only be good.

"Test this tone first. Zhao Xingsheng blew again, and then stretched his head over: "How much?"

"The peak tone of the base tone is at 344.96......" said Xiao Sudao.

If it weren't for Zhao Xingsheng's steady grasp with both hands, I'm afraid that as soon as he let go, he would drop the woo in his hand.

"Then you listen to this again, woo~"

"388. "Gu Xiaobai."

Xiao Su lowered his head and read: "388.03......"

His heart was roaring.

Isn't it, it's really so dazzling that you can even hear the frequency?

Xiao Su felt that he was being shown off.

"Woo~" Zhao Xingsheng blew a third note.

“427.5...... This should be an Ocarina in F key, and all the notes are lower than the current standard......" Gu Xiaobai said.

And with one decimal place?

Xiao Su glanced down and said, "The fundamental frequency is 427.52......"

Damn, it's just a decimal point, and every time you can even control the error within 0.05?

What kind of ears are you? Are they made of kryptonite?

All the sounds blew down, and Xiao Su was really convinced.

"Teacher, I don't think we need to bring any instruments in the future, just take Xiaobai with you!" Xiao Su said.

Gu Xiaobai stretched out a finger and scratched his cheek embarrassedly.

The "absolute pitch" skill produced by this system is really a bit awesome.

"Genius, this is genius!" Zhao Xingsheng sighed, looking at Gu Xiaobai's eyes, he became even more fanatical.

It's in fan mode again.

This is a real piece of gold and jade, and I Zhao Xingsheng saw it, one day, will I, Zhao Xingsheng, also become the godfather of music?

"Xiao Su, you go back and bring my book. ”

Xiao Su turned around and ran, and after a while, Zhao Xingsheng sent a book to Gu Xiaobai.

"Xiaobai, I'll give you this. ”

Understanding Music Theory: Ear Training Synchronization.

"Uh......" Gu Xiaobai scratched his cheeks, "I don't want to be a musician, I just want to be a physicist." ”

Zhao Xingsheng showed a "I understand" expression: "Just study acoustics and vibration, just take the time to flip." ”

"Oh......" Gu Xiaobai took it.