Please, come home and practice the piano

Chapter 904 164. Shocking: It’s a living instrument! ?

On the small stage on the second floor of Sigang, Xiao Che was lying on the piano board concentrating on watching Grandpa Lu tune the grand piano.

She had only seen how to tune an upright piano before.

The strings of an upright piano are arranged vertically, while the strings of a grand piano are arranged horizontally.

The strings change from standing to lying, and the direction in which the hammers strike also changes. In addition, the internal space of a grand piano is much larger than that of an upright piano. Perhaps this is why, with the same striking force, the sound of a grand piano is much louder than that of an upright piano.

It’s not a groundbreaking discovery. Xiaoche just thinks it’s interesting to observe the internal structures of different pianos.

On the contrary, Wang Xiaohu on the side felt a little bored. At first he was full of curiosity. He thought that Grandpa Lu, the best man in Chengdu, would use some unique "skills" like the outdoor masters in martial arts novels.

At least the "weapons" used should be different from those of ordinary tuners. As a result, Grandpa Lu took out his mobile phone and opened an app as soon as he came!

What?

Seeing Grandpa Lu pointing and gesturing skillfully on his phone, Wang Xiaohu suddenly lost interest.

Ji Yang was also a little surprised. Although, her idea was quite similar to Wang Xiaohu's, she didn't know how to tune the piano. Since the teacher said that Mr. Lu was amazing, he must have some extraordinary qualities.

Unfortunately, she really had no interest in tuning.

"It would be great if Marco were here." Wang Xiaohu whispered while the old man had his back turned.

“+1.” Senior Sister Xiao Ji voted in favor. She also felt that apart from Che Lin, only Ma, who liked to tinker with screwdrivers, might be interested in the scene before them.

"You can't sit still anymore?" Mr. Lu turned around and glanced at the three people with a smile.

Xiao Che shook his head, and Senior Sister Xiao Ji smiled and said nothing.

Wang Xiaohu was very honest, "Grandpa Lu, I want to see you perform your special moves!"

"Secret move?" Old Lu laughed when he heard that. "What secret move do you want to see?"

Wang Xiaohu rolled his eyes and said, "For example, tune five notes at a time."

Old Lu shook his head: "It's just five notes, what a trick."

Huh? Five notes at a time is not enough!

Wang Xiaohu immediately became interested and started rubbing his hands eagerly.

Ji Yang was also very curious about how the five notes would be tuned together.

"But before that, I have to test you to see if you have enough ability to distinguish. Otherwise, you won't be able to see my special move even if I use it."

Wang Xiaohu: "How do we take the test?!"

Old Lu looked around and said, "Let me test your ears."

Won! Wang Xiaohu said in his heart that it was a sure thing, Grandpa Lu, you must not know that Che Lin has absolute pitch?

Hehe, Wang Xiaohu showed an embarrassment, "Grandpa Lu, you also know that hearing is difficult. Isn't this embarrassing for us? Except for Senior Sister Ji Yang, Che Lin and I have not received any special hearing training."

Car:

Senior Sister Xiao Ji tried to hold back her laughter. This is Wang Xiaohu.

Just when the three children thought that the regular listening test was about to begin, they saw Mr. Lu holding up his mobile phone directly in front of them.

At first glance, the picture on the phone screen looks like a tuner interface.

"Do you see clearly?"

The three children nodded.

"Do you have any basic knowledge of pitch?"

Wang Xiaohu: "Of course! We all study music!"

Senior Sister Xiao Ji felt something was wrong and nodded slightly.

Old Lu looked at Xiao Che last, and Xiao Che asked hesitantly, "Grandpa Lu, when you say pitch recognition, do you mean the judgment of pitch?"

"Yes, it's about judging the pitch," Lao Lu nodded, and then said, "I'll play a note later, and you tell me if it's high or low."

Xiao Ji was a little unsure: "Sorry, Mr. Lu, do you mean that you will tell us what note you played, and then we can make a judgment based on this note?"

Lao Lu smiled and said, "You can understand it that way."

As expected! Xiao Ji felt bad, this was too difficult.

It's like someone brings you an apple, tells you it's an apple, and then asks you how many grams the apple weighs.

How can one judge this? There is no scale!
Wang Xiaohu still didn't understand what was going on, "Come on, Grandpa Lu! We're ready!"

Senior Sister Xiao Ji rolled her eyes immediately. She still had questions to ask!
Just then, "Grandpa Lu, do we have a standard sound reference?"

Lao Lu: "What standard sound do you want?"

This question made Xiao Che even more confused. The standard pronunciation must be national standard A1, but it didn't matter to her whether it existed or not. She just didn't quite understand what Grandpa Lu meant.

In the eyes of the car, it is like a person brings an apple, and this person tells you that this is an apple, but then asks you if this apple is an apple.

Similarly, if a note is a1, isn’t this note just a1? How can there be a difference between high and low notes?
Unless this sound is actually not a1, but if this sound is not a1, why would the other party tell you that this sound is a1?
And whether it is a1, can’t you tell it by just listening?
Xiao Che decided to listen to a sound first to see what Grandpa Lu meant.

"Are you ready?"

The three children nodded.

"Okay, look at the phone screen carefully, I'm going to play a C1 next."

what? !

Let's judge by looking at the tuner?

Without waiting for the third child to react, "Ding!"

As the sound of a piano was played, a line of sound waves appeared on the screen of the mobile phone, oscillating back and forth, and the line always hovered around the center of the scale.

A lowercase c is displayed above the center 0 scale, followed by a 1.

Wang Xiaohu stared closely at the movement of the ripples. After determining that the sound wave line lingered on the left side of the 0 scale for a longer time than on the right side, he blurted out: "It's too low!"

Senior Sister Xiao Ji also nodded. Judging from the analysis of the profile picture, it was indeed low. She learned something new and at the same time she understood what Teacher Lu meant - intonation is only a relative concept and there are slight deviations in intonation.

Xiaoche looked at the screen and blinked, and she seemed to understand.

"Do you understand now?"

The three children answered in unison: "I understand."

"Okay, you guys take the phone."

Wang Xiaohu took the phone and thought to himself, what fun!

Lao Lu fiddled with the piano for a while and played C1 again with a "ding" sound.

As soon as the ripples appeared on the screen, Wang Xiaohu answered quickly: "Too low!"

"very good."

Lao Lu repeated the action and the sound rang out.

Ji Yang: “It’s high.”

"very good."

In the next two minutes, Lao Lu adjusted and played the guitar three times in a row. Wang Xiaohu answered two questions, and Ji Yang only answered the first one. Both of them answered correctly three times.

But Xiaoche remained silent. After the third time, she stopped looking at the screen of her mobile phone because she found that the ripples on the screen had affected her self-judgment.

However, by the fourth and fifth times, she could hardly hear any obvious difference between the last two notes.

"when."

Another C1 sound was heard.

No one answered.

Five seconds later, another C1 sounded.

Still no one answered.

Wang Xiaohu was dumbfounded. The ripples on the screen no longer shook. "Is it accurate?"

After a moment, Senior Sister Xiao Ji spoke uncertainly.

"Are you sure?" Old Lu asked with a smile.

Senior Sister Xiao Ji smiled modestly and answered truthfully: "The ripples stopped moving, so my guess was correct. I couldn't hear any difference in the next three times."

By the fourth and fifth time, Ji Yang could no longer hear any difference, so she stopped answering.

Just because she couldn't hear it didn't mean there was no difference between the two notes, because there was a faint hint of difference in the ripples on the screen. It was just that by the sixth time, even the ripples on the screen had balanced out.

"It should be accurate." Wang Xiaohu looked at the car uncertainly, "I couldn't tell the difference after the fourth time."

Old Lu couldn't help but look at Wang Xiaohu again. He sounded quite arrogant. Could he last until the fourth time?
Then all eyes turned to the car.

"It's a little bit low." Xiao Che didn't know what was on the screen. If her judgment was correct, it was a little bit low this time.

"That's a little low." Wang Xiaohu repeated directly. He trusted Che Lin's judgment more than the ripple data in front of him.

It was difficult for Senior Sister Xiao Ji to analyze Xiao Che's judgment without a filter, but she was much more rational than Wang Xiaohu. After all, the instrument could not be faked. It was not that she was unwilling to believe Xiao Che, she was just curious about where Xiao Che's judgment came from.

"A little lower." It was interesting. Old Lu turned around and fiddled with the piano again.

"when."

After a moment, Xiaoche said: "It's too high."

Old Lu smiled and turned around to fiddle with it again.

"when."

After a moment, Xiaoche said: "Nothing has changed."

The smile on Old Lu's face gradually disappeared when he heard this, and he turned around and adjusted again.

"when."

Xiaoche said directly: "It's too low."

There was no difference between these sounds in Ji Yang and Wang Xiaohu's ears, and the phone screens showed the same thing, but that didn't stop them from having a blast!

Because they had already seen from Mr. Lu's reaction that Che Lin was not only able to hear it, but also that his answers were all correct.

Old Lu's inner world is much more turbulent than that of his second child, and can be described as a raging storm.

He knew that the little girl named Che Lin in front of him had great piano skills at a young age, but piano skills are piano skills and hearing is hearing. As far as he knew, among the living people, only Finland's national treasure-level harmonica master Lebisno had such ability when he was young.

As an experienced tuner with 40 years of experience, he was absolutely confident that the last few notes he played were precisely scaled.

"How do you judge?"

Having been dealing with tuning for a lifetime and having trained his ears for a lifetime, Lao Lu couldn't help but be curious.

"Hehe, Che Lin has absolute pitch!" Wang Xiaohu answered quickly.

Old Lu shook his head. He had noticed it a long time ago, but this had nothing to do with absolute pitch. It was no longer a simple hearing function problem.

Seeing that Grandpa Lu didn't show any surprise at what he said, Wang Xiaohu felt a little "unhappy".

"Be quiet." Senior Sister Xiao Ji asked Wang Xiaohu to shut up.

Facing all kinds of gazes, Xiao Che didn't know what to say. If she wanted to answer this question, she had to go back to her original question.

"Grandpa Lu, the C1 you play is based on the standard pitch of 442, right?"

Old Lu nodded: "That's right."

Xiao Che breathed a sigh of relief. There would be no problem. Her judgment was correct.

Seeing this, Lao Lu smiled again: "Can you share it with us now?"

Xiaoche paused and said, "Actually, I couldn't hear it anymore in the end."

Wang Xiaohu: "What's your guess?"

Xiaoche: “I haven’t finished yet.”

Senior Sister Xiao Ji: "Wang Xiaohu!"

Wang Xiaohu shut up immediately.

Xiaoche: "I can't tell the difference between high and low pitches just by listening to one note."

Old Lu tightened the tuning wrench in his hand.

Xiao Che continued to explain: "The teacher said that the so-called pitch accuracy must be based on at least two pitches to make a judgment, so I used the C1 that I thought was accurate and the A1 that I thought was accurate to construct the sixth interval in my mind, and then compared the C1 I heard with the A1 interval that I thought was accurate in my mind. In the end, I found that there was still a slight difference between them."

Wang Xiaohu: "."

Senior Sister Xiao Ji: “.”

It was simply horrifying. If Lao Lu had not seen it and heard it with his own eyes, he would not have believed it at all.

The method used by this child already involves the beat frequency rules of musical intervals.

There is a slight difference in the beat speed of the intervals of different root notes under the same crown tone, among which the beat frequency of the major sixth is faster.

If, as the child said, we imagine a1 as the crown tone and construct a major sixth downward, and then assume an auditory c1 to compare with the auditory c1, and judge by the difference in beat frequencies in theory, the above method is completely valid on paper.

But he knew very well how big the gap between theory and practice was on this issue.

"No wonder your teacher asked you to stay and help me. Hahahaha, awesome. Really awesome."

Old Lu was so happy. He had such a strong inner hearing. He must be a natural piano tuner.

Xiao Che felt a little embarrassed by the laughter. She could tell that Grandpa Lu was praising her, but she hadn't been able to help in any way yet.

Downstairs lobby.

Xu Li didn't know how the three children downstairs made the old man so happy. She was thinking about what to eat for lunch, and she stood up when she heard the noise outside the door.

"Sister Xu, we are back."

The first one to come in was Haitao, followed closely by Li An. Xu Li looked back and saw an extremely petite girl following in with a white suitcase.

The two girls smiled at each other, and Mu Xin waved enthusiastically in the air.

"Sister Xu, let me introduce you," the last person to come in was Lao Tang, "Mu Xin, our teacher at position four."

"Hello, Sister Xu! I'm Mu Xin, just call me Ah Xin." Mu Xin took the initiative to extend her hand, and Xu Li also stepped forward to hold Mu Xin's hand, smiling and responding: "Welcome home, Ah Xin."

Oh my god! It’s so touching!!!
Without saying anything else, Mu Xin felt that she had begun to adapt to everything here. "Thank you, Sister Xu!"

At this time, Haitao came over and said, "I'm not kidding you, this will be your home in Chengdu from now on."

Mu Xin: “Yeah!”

Xu Li: "Come on, I'll take you upstairs to get to know the door first, you take a rest and then we'll go eat."

"Don't worry, Sister Xu, I'm not tired at all," Mu Xin said as he took off his coat, "Let's work first."

On the way back, Mu Xin learned that there was still a lot of work to be done in the store, which was great.

Xu Lixin smiled and finally got impatient, which was good, very good.

"Eh? Where's Ango?"

Lao Tang looked around but couldn't see Li Ang.

upstairs.

"Ang Lee, these three kids are amazing." Old Lu sighed.

Li An looked at the three children and smiled: "That's a must. Tell me loudly, is your Grandpa Lu powerful?"

The three kids said in unison: "Great!!"

In an instant, everyone downstairs looked up.

When Mu Xin heard the child's voice, he immediately wondered, "Excuse me, are they having class upstairs?"

Everyone couldn't help but laugh when they heard this.