Noise is the result of chaotic oscillations of sound waves of different nature. In everyday life, we are constantly faced with noises, for example, the noise of the sea, the noise of the wind, the noise of a passing car. There are many different classifications of noise, including by color:
- White noise is so-called “everyday noise”. It includes the sound of foliage, the sound of rain, the sound of the night, the sound of a stream, and the hum of the subway. White noise is not harmful to humans, but constant exposure to it can lead to increased blood pressure and headaches.
Some people argue that white noise can cause hallucinations. To do this, you need to turn on the radio to an empty wave with interference, and go to bed with the halves of a tennis ball glued to your eyes. In this way, you can see horses or talk to deceased relatives.
- Pink noise - Also known as flicker noise in applications. A good example of pink noise is the sound of a helicopter flying by. Pink noise has a good therapeutic effect in the treatment of neuroses and depression. Recent studies have shown that films based on pink noise patterns tend to grab viewers' attention more. they correspond to the pattern of distribution of people's attention.
- Brown noise resembles the sound of a waterfall. He is famous for the fact that entering into resonance with human organs, in particular with the abdominal region, brown noise causes malfunction of the stomach and intestines and can be dangerous at strong intensity.
- Blue noise is sharper in sound than white noise. This noise results from transformations of pink noise.
- Purple noise, like blue, is absent in nature. It can be obtained by spectral analysis of white or brown noise.
- The property of gray noise is that it has the same loudness to the human ear over the entire frequency range. The spectrum of gray noise is obtained by combining two noises: brown and violet. Humans perceive gray noise in the same way as white noise.
- Orange noise, aka orange noise. From a scientific point of view, it has a very complex description. But it is very easy to reproduce such a sound - it is enough for first graders to hand over plastic soprano pipes and allow them to make some noise.
- Red noise is typical for most bodies of water: seas and oceans. Such noise can be heard from the shore from distant objects that are in the ocean.
- Green noise is the noise of the natural environment.
- Black noise is what we sometimes miss in the bustle of the city: black noise is silence.