Can superman hear every sound?
Our sensory organ receive more and we,our counscionsness, perceive less.
Because most of the numerous sensory inputs are filtered out.
Sharks can smell a few kilometers and eagles can find mice a few kilometers away, but humans don't. But they all have structurally similar sensory systems.
Is it possible to hear and discern all the sounds from everywhere like Superman?
In conclusion, it's not impossible. Though sound is a wave transmitted through the vibration of a medium (particle) and it can be distracted by other forces, it seems our state-of-the-art technology makes the impossible possible.
The performance of a wiretap depends on how fine the sound can be tapped and how far the player can be. But security experts say, "Now, performance is rarely a problem for eavesdroppers," as recent ultra-high-performance eavesdroppers get on and off the media. Eavesdroppers hidden in fountain pen lids and rings, built-in taps built into power outlets, and eavesdroppers built into the cuprest are sophisticated products that make it impossible to doubt that a tap is installed. The equipment in the 007 movie about the US-US intelligence confrontation is already infiltrating us. However, even these eavesdropping equipments have a weak point that they need to access the tapping site once to install it. Therefore, in many cases, security measures can be thoroughly prevented from eavesdropping by blocking access from outsiders. But advanced eavesdroppers, who do not approach you and listen to your voice from afar, make this effort a bubble. It is laser tapping.
You know that there is an important meeting in an office in a building, but you can't access it. The principle is to shoot a laser to detect minute vibrations in the room's windows. Lasers can be fired on the window to detect sound waves and return them to speech. The price of laser equipment is so expensive that there is no example used in Korea, but it is already used in the US.
On the other hand, there is also a method of recording a conversation scene with video and analyzing the shape of the mouth based on this to compose a conversation. It is the same principle as the speech method that deaf people see the contents of their partner's mouth.
Because of this, private conversations are shared with the outdoors. In this case, since the talker speaks while moving, it is difficult to install a fixed tap and video of the talker's mouth is difficult. But it can also be tapped by using a high-performance microphone to amplify the sound waves transmitted over long distances. In an espionage movie, you can take a dish-shaped parabolic antenna and equipment, turn it from place to place, catch the sound, and keep track of it.
In this case, there is a need for a technique of erasing the sounds coming from the surroundings and amplifying only the voice. Using a high-performance microphone, it is possible to directly detect sound waves at a distance of about 100 to 200 meters. Similarly, using a high-performance hearing aid, you can easily hear the faint sound of talking in the next room without installing a wiretap.
Extra)
How do nature documentaries get such good sound?
A)Investigate the habitats of animals and install a microphone in advance to get sound.
Because most of the numerous sensory inputs are filtered out.
Sharks can smell a few kilometers and eagles can find mice a few kilometers away, but humans don't. But they all have structurally similar sensory systems.
Is it possible to hear and discern all the sounds from everywhere like Superman?
In conclusion, it's not impossible. Though sound is a wave transmitted through the vibration of a medium (particle) and it can be distracted by other forces, it seems our state-of-the-art technology makes the impossible possible.
The performance of a wiretap depends on how fine the sound can be tapped and how far the player can be. But security experts say, "Now, performance is rarely a problem for eavesdroppers," as recent ultra-high-performance eavesdroppers get on and off the media. Eavesdroppers hidden in fountain pen lids and rings, built-in taps built into power outlets, and eavesdroppers built into the cuprest are sophisticated products that make it impossible to doubt that a tap is installed. The equipment in the 007 movie about the US-US intelligence confrontation is already infiltrating us. However, even these eavesdropping equipments have a weak point that they need to access the tapping site once to install it. Therefore, in many cases, security measures can be thoroughly prevented from eavesdropping by blocking access from outsiders. But advanced eavesdroppers, who do not approach you and listen to your voice from afar, make this effort a bubble. It is laser tapping.
You know that there is an important meeting in an office in a building, but you can't access it. The principle is to shoot a laser to detect minute vibrations in the room's windows. Lasers can be fired on the window to detect sound waves and return them to speech. The price of laser equipment is so expensive that there is no example used in Korea, but it is already used in the US.
On the other hand, there is also a method of recording a conversation scene with video and analyzing the shape of the mouth based on this to compose a conversation. It is the same principle as the speech method that deaf people see the contents of their partner's mouth.
Because of this, private conversations are shared with the outdoors. In this case, since the talker speaks while moving, it is difficult to install a fixed tap and video of the talker's mouth is difficult. But it can also be tapped by using a high-performance microphone to amplify the sound waves transmitted over long distances. In an espionage movie, you can take a dish-shaped parabolic antenna and equipment, turn it from place to place, catch the sound, and keep track of it.
In this case, there is a need for a technique of erasing the sounds coming from the surroundings and amplifying only the voice. Using a high-performance microphone, it is possible to directly detect sound waves at a distance of about 100 to 200 meters. Similarly, using a high-performance hearing aid, you can easily hear the faint sound of talking in the next room without installing a wiretap.
Extra)
How do nature documentaries get such good sound?
A)Investigate the habitats of animals and install a microphone in advance to get sound.
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