don't call me singer

Chapter 689 Gu Xiaobai's whack-a-mole game

Above the sea, under the blue sky, the Zhongjun sailed alone on the sea.

This is not a common shipping channel, so it is very quiet around.

The sailing speed of the Zhongjun is very slow, only about seven or eight knots. On the Zhongjun, many staff members are busy testing and debugging various equipment and testing various underwater acoustic data.

Behind the Zhongjun, a thousand meters underwater, a submarine has been quietly following behind for two hours.

"Not found!"

"Ahahaha, let me just say, we were not discovered!"

"Sure enough, our stealth is invincible!"

It's been two hours, and we haven't been found yet. We must have tricked Zhongjun!

The captain stood there, tears streaming down his face.

We finally made it!
Our experiment is successfully completed!

Just when he was about to announce loudly, he suddenly heard a "boom".

Knocked out!
Hit by active sonar again!

The captain's expression immediately froze.

What's the situation?
On the Zhongjun, Gu Xiaobai finally finished working on a small project of his own, pushed away the notebook in his hand, stood up and stretched.

Ah, so tired.

Time to listen to something and take a break.

Gu Xiaobai walked to the earphone of the full-band transducer array next to him, and put on the earphone.

As soon as he put on the earphones, he heard a small humming melody amidst the noise of the ocean.

The melody is hidden under the noise of the ocean, like the splash of a bluefin tuna inadvertently turning around, like a shark wagging its tail from side to side, or like a school of panicked fish, suddenly merging and suddenly separating.

Its voice is so harmonious that even people who hear this voice occasionally will think that it is actually some kind of unknown marine life, and will not think that it is actually a submarine.

A behemoth capable of submerging in seawater for a month!
But this kind of voice can't be hidden from Gu Xiaobai.

At this moment, Gu Xiaobai really couldn't laugh or cry.

This big guy, why are you here again?
In Gu Xiaobai's ears, that huge monster has nowhere to hide in the ocean.

It's like a big man hiding in the crowd, covering up, trying to cover up the person in front of him.

Hey, your big man has been exposed, okay?
Forget it, save some face!

After a while, Gu Xiaobai found that this big guy was still brazenly following behind.

Moreover, there is a trend of getting closer and closer.

Gu Xiaobai couldn't bear it anymore.

Is this bullying that I am deaf?

Gu Xiaobai's hand pressed down on the console, and in the next second, there was a loud "boom", resounding through the cabin of the submarine again.

Knocked out!
Knocked out again!

It was as if a basin of cold water had been poured on everyone's foreheads, and the joy just now had suddenly disappeared.

There was a dead silence in the submarine.

How did we get discovered again?
Is it really because our technology is not good enough?
The officers and soldiers in the submarine fell into deep doubts again.

At critical moments, the captain encourages everyone:
"Don't be discouraged, everyone, at least we persisted for two hours before being discovered! It's much better than being discovered when we first appeared last time!"

"Oh!" Everyone replied weakly.

"Come on, don't be rude, and say hello to Zhong Junhao!"

With a sound of "boom", the active sonar hit the bottom of the Zhongjun ship. On the Zhongjun ship, Gu Xiaobai heard that the submarine behind stopped, then slowly turned and sailed into the distance.

gone?

After a few hours, Gu Xiaobai put on the earphones again, and then he heard that voice coming again!
Gu Xiaobai didn't know what to say, he thought about it, and another active sonar knocked over.

"Boom!"

After a long time, there was a "boom", and the other party responded to him.

Gu Xiaobai: "????"

He didn't understand at all what these guys were doing.

a bit confused...

Why do you feel a little childish?

This kind of feeling is like a big man following behind the small man in front, and when the other party finds out, he greets with a smirk: "Hi!"

What do you want to do?
Do you always feel like you are being followed by morons?

Gu Xiaobai tilted his head, puzzled.

In the submarine, the captain clenched his fists: "This time, we persisted for two and a half hours before we were discovered!"

"come on!"

"Let's do it again!"

The submarine turned and sailed away again.

One more time and we're heading back home!
On the Zhongjun, Gu Xiaobai thought for a while, then returned to his notebook and started typing.

Pan Guoxiang watched for a while, but didn't understand at all.

Hydroacoustics involves fluid mechanics and acoustics, but the electroacoustics that Gu Xiaobai is doing now is entirely the work of coders and coders.

He asked the sluggish Chen Jingshan next to him, "What is Xiaobai doing?"

"He's writing a filtering algorithm for sonar..." Chen Jingshan looked dull.

filtering algorithm?

"What is it for?"

"From the noise of the sea, find a certain sound in a specific pattern, and separate and mark it..." Chen Jingshan said.

Now, it was Pan Guoxiang's turn to be shocked.

Although Chen Jingshan is engaged in electro-acoustics, he is actually mainly engaged in high-fidelity compression, high-fidelity playback, streaming music streaming, and other electro-acoustic processing of sound.

He had never touched anything military-related before.

But Pan Guoxiang understands.

This thing actually overlaps with the functions of modern sonar. Modern sonar can automatically identify and fix different motors and ships through sound patterns, and automatically mark them.

In most cases, it can be very accurate.

But this kind of thing has almost no effect on military submarines. The identification data of major military powers are absolutely confidential.

But for Gu Xiaobai, there is nothing in this world that cannot recognize patterns and find characteristic sounds.

But as long as effective patterns and characteristics are found, it will be easier to identify them.

"The accuracy of his algorithm is very high...it can improve the noise control level of recognition by several grades..." Chen Jingshan looked behind for a long time and explained to Pan Guoxiang.

Then, Gu Xiaobai added a few more lines of code, and wrote these things into the control code of the underwater acoustic transducer matrix.

"What's this for?" Although Pan Guoxiang didn't know how to change, it was obvious that the genetic code behind it was different from the previous one.

"As long as the target pattern is detected from the ocean noise, the active sonar will be launched automatically..." Chen Jingshan pondered: "Why do I think Xiaobai wants to whack a mole?"

Whack-a-mole?
Who are the gophers?

Why does Xiaobai want to fight the hamster?
Pan Guoxiang had no idea what happened.

Behind, the big man who was sneaking quietly approached the Zhongjun from a distance.

There are dozens of nautical miles away from the Zhongjun, the captain took a breath and said: "Get ready, keep silent! Don't make any noise!"

According to their experience, the Zhongjun will probably monitor the data of about [-] nautical miles nearby. As long as it enters the range of [-] nautical miles near the Zhongjun, it will be a matter of time before it is discovered.

The question is how long this time around.

Then, the captain heard a "boom".

"What's the situation? Didn't you say not to make any noise?" The captain was annoyed.

The sonar soldier looked at him with a dazed expression on his face.

"Wait, we got knocked?"

The sonar soldier nodded.

"How could we be knocked!" The captain was furious, "Again!"

After going around in a circle, they just entered within [-] nautical miles of Zhong Jun.

"Boom!" There was another sound, and it hit the submarine accurately the moment they entered thirty nautical miles.

captain:"……"

Sonar Soldier: "..."

Other officers and soldiers: "..."

why?
"This is impossible, it must be a coincidence!"

"Is he shooting active sonar indiscriminately?"

The sonar soldier looked at the screen for a long time, then put on the earphones and listened for a while, then shook his head and said, "No."

"I don't believe it, come again!"

The captain raised his wrist and looked at his watch: "We'll come back at night, I don't believe he doesn't sleep!"

The submarine wandered around the rear for a long time, and at around 11 o'clock in the evening, it quietly entered the range of Zhongjun.

"Boom!" I was knocked again!
At this moment, the captain felt like the reincarnation of the Buddha, with his head covered in bruises!

Mom, look how tall I am!
Mom, I'm growing taller again!

Mom, I'm growing taller again!

I'm in so much pain!

In the submarine, day and night, in the dim light, the captain commanded the submarine and kept circling around the Zhongjun.

2 a.m.: "Boom!"

3:27am: "Boom!"

5:15am: "Boom!"

7:[-] am: "Boom..."

"Doesn't he even sleep?" The captain was going crazy.

We don't sleep, why don't you sleep too!
He didn't know that Gu Xiaobai had gone to bed long ago, and at this moment, it was not a human being who was playing "whack-a-mole" with him, but a program.

Gu Xiaobai's laptop is connected to the console, and it is running quietly at this time.

The algorithm that Gu Xiaobai just wrote is running in the background.

It's like a thin layer of gauze, filtering the sound of the bottom of the sea over and over again.

once, twice, three times...

It's as if the water has been filtered layer by layer, from mud and sand to a piece of clarity.

All the noise disappeared, leaving only the sound of the propeller humming on the screen.

Then "boom".

Whack-a-mole.

Gu Xiaobai fell asleep, but there were still people who stayed up.

Chen Jingshan sat in front of the computer, staring at the program on it.

Watching the sound being filtered layer by layer, the feeling is like seeing someone find an orange among millions of oranges at a glance.

He'd seen the code, but no matter what, he still couldn't believe how anyone could play pattern recognition and noise filtering of voices to such an extent.

This is impossible!
He felt that his previous worldview was about to be subverted.

At eight o'clock in the morning, Wang Guanshan came to change shifts with the chief mate.

He ran around on the boat and sweated a little. He was stretching comfortably at this moment. After entering, he found Chen Jingshan's red eyes.

"You haven't slept all night?" Wang Guanshan stared.

Chen Jingshan responded with a hoarse voice, staring at the picture.

Wang Guanshan shook his head, half an hour passed, and Gu Xiaobai also finished his breakfast and exercise, and ran to the cabin.

He saw Chen Jingshan staring at his notebook, but he didn't care. He took out a book and read it carefully beside him.

After a while, he heard Chen Jingshan yelling: "Damn it, it appeared again!"

Gu Xiaobai turned around and saw a group of people gathered around Chen Jingshan, including graduate students, other professors, and crew members.

They are discussing curiously.

"What is this doing?"

"Is Xiaobai looking for a deep sea monster?"

"It seems to appear every once in a while, like playing hide and seek with us."

"It's so pitiful, just entering 30 nautical miles from us, you will be knocked back..."

"I think it might be a whale. Look at this tiny noise. It's definitely not a ship."

"Maybe it's a sea monster!"

"I think it may be the people of the sea."

"alien!"

"But it's amazing, such a small wave can be found!"

"If this recognition algorithm is published, tsk tsk tsk..."

Wang Guanshan also watched with relish and participated in the discussion.

He was the one who guessed it was an undersea monster.

Then, he heard the radio ring.

"Captain, someone is looking for..." Over there, the staff member called him with a strange expression.

Then he heard a crying voice inside: "Hey, you are too much! Our captain is crying, can we be human!"

Wang Guanshan: "???"

"Whoever said I was crying, I was sleepy! Old Wang, you brat, did you stare at us all night without sleep! It's too much! Do you want to give me some face! Are we still good brothers!" Over there, the captain's hoarse voice came.

Wang Guanshan immediately recognized this voice, his old classmate and good friend for many years, his comrade-in-arms Sun Junliang.

"Old Sun, why are you contacting me? Aren't you going... Wait, are you by our side?"

Wang Guanshan looked left and right subconsciously.

In the past, when he was still on the warship, he was often molested by Sun Junliang.

In the rear, the submarine threw out its floating antenna and complained to Wang Guanshan just to make a phone call.

At this moment, Sun Junliang really burst into tears: "I didn't know before, Lao Wang, you are this kind of person, how long has it been since we haven't seen you, is it really okay for you to be so merciless and abuse us like this? A little way to survive Don’t even give me uuuuuuuuuuuuuuuuuuu give me back the Wuliangye I gave you! Give me back!”

Wang Guanshan: "?????"

He looked back and saw the crowd forming a group, and suddenly understood...

What the hell was Gu Xiaobai molesting this night?

"Oh... so the guy who got knocked as soon as he showed his head was you..." Wang Guanshan suddenly realized, "Ahahahaha, do you think brother, I don't sleep to play with you? I don't know how sweet I sleep at night! Knock Your one is not a person, it is a code edited by my boss, and it is knocked when he shows up. Isn't it cool? "

Wang Guanshan was stunned suddenly.

The most advanced domestic submarine will be caught and knocked on the sonar filter algorithm...

A possibility came to Wang Guanshan's mind.

What the hell, the Black Square family is about to add a new member!
(End of this chapter)