How to control the volume of sound in life

Theoretically speaking, it is mainly from three aspects, first to control the generation of sound, such as prohibiting the horn, and then to control the propagation of sound, some glass is soundproof, and finally to prevent sound from entering the ear, which is very simple, earbuds are theoretically speaking, mainly from three aspects, first to control the generation of sound, such as prohibiting the horn, and then to control the propagation of sound, some glass is soundproof, and finally to prevent sound from entering the ear, which is very simple, earbuds are theoretically speaking, Mainly from three aspects, first to control the generation of sound, such as prohibiting the horn, followed by controlling the propagation of sound, some glass is soundproof, and finally to prevent sound from entering the ear, which is very simple, earbuds are.

To put it simply, it is controlled by a sound-sensitive and light-sensitive element, and when it receives sound waves and light, it will induce a circuit to turn on the bulb and make it shine.

In fact, there are many kinds of acoustic and photosensitive components, in fact, considering energy consumption, economic benefits and other issues, the internal structure may be more complex principles, I just talk about the basic principles to be easy to understand, which requires some basic knowledge of physics.

Acoustic-sensitive, such as capacitive type, a conductive film is placed between the two poles of the capacitor to completely separate the two poles, and the wire is drawn out from the film, and the upper and lower plates form 2 capacitors, if the sound wave comes, the film is bent by vibration, so that the distance between the 2 capacitor plates also changes in fluctuation, and the cycle is reduced while becoming larger, causing the size of the 2 capacitors to change, which can lead to the voltage change at both ends of the capacitor, and then the relevant amplification circuit amplifies and filters the filter to control the switch to turn on, and is provided with a delay circuit, and disconnect when the time comes.

The photosensitive element is the electric charge generated by some materials after being illuminated, that is, the change of voltage or current, which is actually the photoelectric effect of converting light energy into electrical energy, and there is also an energy calculation formula proposed by Einstein. If you look into the root cause in detail, that is the principle of the ability to release electron excitation and jump in quantum physics, the theory is profound, and I also know a little bit about it, if you are interested, you can find a related book to see. Then, similarly, the switching circuit is controlled by amplifying the filter and the time delay.

The ability is limited, I can't say it clearly, the landlord forgive me! Huh .

ps: We always feel that Einstein or some kind of great scientist still has various theories that are difficult to understand, and they can't play with our lives, but in fact, in the development of science and technology, they are all around us.

Adjust the strength of the hand covering your ears The tighter you cover, the quieter the sound

At any time in life, you should speak calmly, avoid losing your temper, and not make loud noises when you are happy!

Speak loudly when speaking, and try to be as quiet as possible when talking about private topics in public or when playing **.

Scenes that need to speak quietly include: two people talking about their hearts, office location, two people talking about problems, two people exchanging opinions in the family, and leaders and being led talking heart-to-heart and other scenes need to pay attention to whispering.

In short, there are many places where you need to speak quietly, as long as there are people around, speaking loudly will affect the other party, you should lower the volume, and don't reduce your quality because of your own whim.