With the continuous development of human society, human life has been colorful and prosperous everywhere. This is a very fortunate thing for people, because after years of war, people have finally lived a peaceful and prosperous life. However, there will inevitably be some annoying things in life. Today I want to talk about "voice".
When it comes to sound, everyone will be familiar with it. The beginning of life is born from sound. In life, under the sprint of sound all the time, there is the cry of BB, the voice of people, the sound of cars, the sound of music, and the noise. Today we are talking about noise, which is the noise that this article is going to talk about.
How to define noise is difficult to decide, because noise can also be said to vary from person to person, but the country has also drawn a noise standard according to the standard of most people, that is, the decibel range is used to judge whether the sound produced is not. is noise. To judge this standard also needs some instruments, so the noise meter was born.
At present, with the development of science and technology, the function of the noise meter has not only been improved and improved, but more importantly, it is more and more convenient to use, the operation is more and more simple, and the test data is more and more accurate, the application The scope is getting wider and wider. At present, the most popular noise meters are hand-held noise meters and portable noise meters. These two noise meters bring people's lives not only what their names describe, but also more and more people. Such instruments are needed to ensure that their quality of life is not threatened, so the birth of such a product is a raindrop for people and carbon in the snow. Especially in the life of urban people, not only are people crowded, but the houses are even more crowded, and there are all kinds of noises. People living in cities are poisoned by noise all the time. If sound becomes noise, it is a poison that is more terrifying than poison. According to national regulations, noise is the sound that causes others to be unable to rest or work normally, and threatens the physical and mental health of others. Therefore, after investigation, it is concluded that the standard sound range that most people can accept is no more than 70 decibels, which is a normal sound. This value is measured with a noise meter. The working principle of the noise meter is briefly described below.
Sound is generated by vibration and propagates in the form of waves through the medium. The noise meter uses this to receive the vibration frequency of the transmitted sound and the wavelength of the sound, so as to calculate and count through complex formulas to obtain a relatively close. Numeric range, ** displayed on the noise meter screen.
In fact, people can also use the noise meter to protect their rights. If they are affected by noise for a long time in their lives, and want to stop this kind of thing and continue their own life, they can use the noise meter to collect the surrounding sound data and record the noise. Down, and then take the data to the relevant government departments, and let the government departments severely punish and warn the places that make noise.
