Xiang Feng's house was only 70 square meters. It had two bedrooms and a living room. The balcony was not big either. It could even be said to be relatively small.
However, the good thing was that the line of sight was not bad. It was quite far away from the other tall buildings and could see the mountains in the distance.
Xiang Feng didn't bring a chair out. He just lay on the balcony tiles. Of course, the floor had been carefully wiped.
Under the night sky, Xiang Feng's condition was particularly good. His bodily functions had reached their peak. After the targeted training after drinking blood for the last three times, his sensory abilities had mutated and evolved. They had already improved greatly.
However, due to the limitations of his equipment, he was unable to make accurate tests and statistics. He had used his phone to download an APP that could emit sounds at a frequency of 1- 22,000 Hertz, but this could only test the frequency range of the sound he heard. It could not completely test the overall improvement of his hearing. He had also used a fixed sound source as a reference, then lengthened the distance, using the farthest distance that could be heard as the standard. However, this method of judgment required a relatively fixed and stable environment. It was easy to be disturbed and difficult to test accurately.
It was the same for the sense of smell. They could only perform a more subjective test.
Xiang Feng, who was lying on the balcony tiles, closed his eyes and relaxed his muscles. He focused all his attention on his hearing and smell.
The sound was like a flood from a reservoir. All kinds of noises intersected, and so did the smell.
The human brain had a very mature mechanism for processing external information. It could be said to be a protective mechanism, but it could also be said to be a lazy mechanism.
When one's attention wasn't on sound or smell, although the hearing and smell organs were constantly collecting information, this information would be weakened, filtered, or even blocked by the brain.
When one's attention was focused on sound and smell, they could focus and enhance the transmission of information according to the information they were focused on, blocking other influences.
However, hearing a sound, smelling a scent, and locking onto a sensory information was one thing. How to make a judgment based on this sensory information was another matter.
It was as if someone was sitting at home and heard a car whistling past.
If his attention was attracted by the sound, he would subconsciously imagine a car speeding across the road outside the house.
He was able to see this scene because he was familiar with the road outside the house. He had also heard the sound of cars and seen how cars sped on the road outside the house.
Those who were more familiar with the sounds of car engines and exhaust could even tell whether the car outside was a four-cylinder or six-cylinder engine, a Ford or a Toyota, a broken diesel truck or a supercar. The images constructed in their minds would be more specific and rich.
The person sitting at home would be able to tell that the sound was from high heels when he heard the crisp footsteps upstairs. If he had never seen the residents upstairs, he might have imagined a young woman walking around in high heels. However, if he had seen the residents upstairs were a fifty-year-old auntie, then when he heard the sound of high heels, he would imagine a fifty-year-old auntie walking around.
The brain would make the necessary " brain adjustments " based on its own " database ", experience, logic, and instinct.
Therefore, it was one thing to be able to collect sensory information, but whether the information was really useful was another matter. Helping the brain make judgments was another matter.
Xiang Feng was lying on the ground not because there were no chairs to move out or blankets to spread on the ground. It was because in a building made of reinforced concrete, other than air, the walls and ground were the main medium for sound transmission. Therefore, if he lay on the ground and touched the ground directly, he could hear the entire building more easily.
Xiang Feng listened carefully and slowly filtered through the various sounds. He started with the nearest sound. First, it was downstairs, Room 608. From the sound, it seemed to be a middle-aged couple talking about their son who was going to university in the north. The TV was broadcasting the news.
To the side, the room next door was silent. There were no footsteps, no sounds of electrical appliances being used, no sounds of talking, and no sounds of breathing. However, there was the sound of the curtains being blown. It should be the sound of the windows being closed and the owner not returning.
Then, he heard the voice of the chubby girl, Liu Shiling, whom he had seen during the day, so he located her voice at 706. He knew that the chubby girl's house was 706.
Judging from her voice, the chubby girl and her mother were at home. Her mother was urging her to take a shower, and she was still watching cartoons in front of the television, refusing to move.
Using 706 as the anchor point, Xiang Feng continued to distinguish the sounds he heard and make judgments.
When he heard footsteps, he could judge the position of others in the house and even the direction they were moving based on the structure of his house and other reference sounds, such as the sound of turning on the tap, the sound of turning on the gas, the sound of lifting a cup, and the sound of other electrical appliances being turned on.
At the same time, he could also use smell to assist in his judgment. For example, if he heard the sound of someone colliding with a spatula or cooking food in 402, he could use his sense of smell to determine what the other party was cooking. He could even guess the taste.
Moreover, the mutual verification of smell and sound could also help him determine the location more accurately.
Time passed slowly. From the outside, the lights in the entire neighborhood slowly went out and the voices and movements of the families gradually became smaller.
It was past one in the morning when Xiang Feng opened his eyes. He sat up from the ground and stretched.
He had already used sound and smell to 'walk' through every household in the entire building. Although the only person he had actually met, told his name, and knew was the chubby girl from 706, Liu Shiling, he had recognized almost everyone through their voices and smells that night. He even knew a lot of " secrets."
Of course, Xiang Feng wasn't trying to pry into other people's privacy. He was training.
Just like how he started to train his endurance and agility after his muscle circumference increased, he needed to train his brain's ability to process the sensory information he obtained after his sensory abilities improved rapidly.
It was like two professional athletes of the same weight and similar muscle content. Because of the different sports they were engaged in, the training they carried out was different, and the way they exerted force was also different. The results of exerting force were naturally different. A professional boxer's punch was naturally heavier than a professional basketball player's, and a professional basketball player's ability to complete a basketball move under the same level of confrontation was definitely stronger than a professional boxer's.
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