Chapter 287: speaker

"Hey!"
Lin Tiancheng just gave a gentle feed, and in an instant, the squally wind whistling at the bottom of the well, flying sand and rocks, and the tranquil water surface also swayed layers of ripples, as if experiencing a substantial sound wave impact.
Luan Jingzhu felt as if someone had dropped a shock bomb in the well.
She exclaimed in surprise, and quickly covered her ears with her hands.
Lin Tiancheng himself didn't expect the voice to be so loud, and he was also taken aback.
It seems that the speaker function, Lin Tiancheng guessed right, can indeed amplify his speaking volume.
I usually talk on a mobile phone. When the speaker is not turned on, I can only hear it by putting it to my ear. The sound is only about 10 decibels. Turning on the external sound can reach about 40 decibels. The difference is four times.
If a normal person shouts loudly, it can reach 60 decibels, and then use a loudspeaker to amplify it, I am afraid it will reach a terrifying 200 decibels or more.
This is just a normal person, and Lin Tiancheng is no longer a normal person. If he turns on the speaker and shouts with all his strength, even 300 decibels is possible.
You must know that 120 decibels is not something ordinary people can tolerate. Staying for a minute can cause temporary deafness. More than 120 decibels can even cause a person to permanently deaf.
What is the concept of 300 decibels?
It was almost 30 tons of TNT exploding fifty meters away.
Lin Tiancheng was about to ask Luan Jingzhu to cover his ears, and suddenly a little different color appeared on his face.
Because the speaker is turned on, not only Lin Tiancheng's voice can be amplified, but the sound from the outside world is also amplified. The bottom of the well, which was originally extremely quiet, was a colorful world full of life to Lin Tiancheng's ears.
He could hear the whispers of birds and insects outside the well, and even the undercurrents at the bottom of the well, and every sound rang in his ears very clearly.
"Jingzhu, Doctor Lin..."
Hearing this voice, Lin Tiancheng smiled and said to Luan Jingzhu: "Have you heard, someone has come here."
Luan Jingzhu shook his head with a blank face.
Lin Tiancheng said to Luan Jingzhu: "You cover your ears and I will call someone."
After thinking about it, Lin Tiancheng felt unsafe, so Luan Jingzhu took a deep breath, and then sank his head into the water.
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Worried that the loud sound might damage his hearing, Lin Tiancheng covered his ears, raised his head to the sky above the well, and shouted, "We are in the mine."
Along with Lin Tiancheng’s
I
exit, there was a violent wind that seemed to be visible to the naked eye, roaring towards the mouth of the well, and the thorns and moss on the wall of the well, under the huge gust of wind, clung to the well. Above the wall.
At a location almost two meters away from the well, an unknown thorn rose to the top of the sky.
Outside the well is also strong winds, flying sand and rocks.
In an instant, I don't know how many birds and beasts were frightened and fled in all directions.
In a short period of time, near the mouth of the well, within a kilometer radius, no bird and beast could be found.
It is already four o'clock in the afternoon.
At noon, Miao Cuihua saw Lin Tiancheng and Luan Jingzhu not going home, and they couldn't get through, so she was a little worried.
In such hot weather, I am afraid that there is a possibility of heatstroke when entering Laohuling to collect medicine.
After waiting for another two hours, Lin Tiancheng and Luan Jingzhu still did not return. Miao Cuihua did not dare to neglect, and immediately mobilized the whole village to enter Laohuling to search.
As soon as they entered Laohuling, a group of people began to yell.
If I didn't find it, there was a thick voice in a misty voice.
"We are in the mine..."
Miao Cuihua's body became stiff, and she immediately beamed with joy, and said, "It's Doctor Lin, have you heard?"
"No, did you hear me wrong?" an old man with a little ear said.
Before Miao Cuihua could refute, many people spoke up, "Have you heard? Someone is calling for help."
"I heard it, in the mine."
Suddenly, someone showed something strange on their face, "Could it be that we heard it wrong? It's deep in the mountains and old forests. It's great that the sound can travel 100 meters. The nearest mine is also kilometers away from us. Well, and, he seems to say he is in the mine, is this possible?"
"We are really in the mine..."
As soon as this person's voice fell, Lin Tiancheng's voice came over again.
Many people have heard it. Everyone, look at me and I look at you, with a bit of horror on their faces.
What did Doctor Lin just say?
Are they really in the mine?
Could it be that Dr. Lin heard what everyone said?
Only Miao Cuihua, because she was anxious, didn't think much, she immediately said, "It's Doctor Lin. It's in the mine."
There are abandoned mines in several places in Laohuling. After a brief discussion, everyone decided to divide the troops into several routes, let the experienced people lead the way, and search separately.
Inside the mine, Lin Tiancheng was attentive, and he could hear Miao Cuihua and others talking.
Lin Tiancheng finally heaved a sigh of relief when they heard the soldiers approached in several ways.
It seems that when the speaker is turned on, it can not only amplify your own volume, but also amplify the volume of others. Fortunately, when I called for help, I didn't feel uncomfortable.
Turning on the speaker definitely consumes power. Looking at the remaining 3 power, Lin Tiancheng turned off the speaker.
At the same time, I was a little bit disappointed.
If you knew that Miao Cuihua would take people into the mountains so quickly, you shouldn't install this speaker.
20 electricity!
Get a kilometer sound transmission function, and by the way, give a wind ear ability.
Lin Tiancheng felt a bit tasteless.
It's just that it's done, even if you uninstall the battery, you can't get it back. That's all.
After half an hour, Lin Tiancheng and Luan Jingzhu were finally rescued.
Seeing that Lin Tiancheng and Luan Jingzhu were in such a deep mine, many people felt incredible.
Someone feared that Lin Tiancheng didn't know, and said to Lin Tiancheng, "Do you know? We heard your call for help just now. So deep, so far. We all heard it."
Lin Tiancheng thought in his heart that I still heard you talking, but said: "Really? It's our fate."
Someone shook his head, "We heard it from a long distance."
"That might be my luck?"
Everyone still finds it difficult to understand.
Many people began to discuss why Lin Tiancheng's voice could spread so far.
Some people say that Lin Tiancheng's voice is loud, and some people say that Luan Jingzhu's passing grandparents may have appeared.
Regarding everyone's guess, Lin Tiancheng reserved his opinion.
After returning to Luan’s Village, Lin Tiancheng taught Luan Jingzhu to stew the medicine once, and then planned to return to Fengcheng.
According to the current situation, if he does not break through the last step in a short time, it will be difficult for him to charge Luan Jingzhu.
He consumed a total of 12 electricity on Luan Jingzhu's family, and recharged 21 electricity on Luan Jingzhu, earning 9 electricity.
Although Luan Jianxin's illness can be cured with 5 electricity, but after a while, Luan Jingzhu's body can be charged again.
However, just walking out of Luan Jingzhu's door, Lin Tiancheng saw an acquaintance.
...