What sounds are white noise? What sounds count as white noise?

White noise, or white noise, is a random signal or random process in which the power spectral density is constant. In other words, the power of this signal is the same in each frequency band, and since white light is a mixture of monochromatic light of various frequencies (colors), this property of this signal with a flat power spectrum is called "white", and this signal is also called white noise. Conversely, other noise signals that do not have this property are called colored noise.

Ideal white noise has an infinite bandwidth and therefore an infinite amount of energy, which is not possible in the real world. In fact, we often think of flat signals with limited bandwidth as white noise, because it makes our mathematical analysis easier. Magical"White noise"There are amazing properties, it is like a white beam of light, made up of all the colors, and what we see is white light.

It's a kind of white noise, one might ask, what does white noise sound like? Can you make us feel it exactly? In some Western countries, many people who have been exposed to white noise** describe it as sounding like rain, or like the sound of waves crashing against rocks, or like the rustle of the wind through the leaves.

This kind of sound can play a certain role in the sound of people of all ages, and it is a "harmonious" voice. Some people also feel that "white noise" sounds a little harsh, and white noise at a certain volume can ** some children with hyperactivity have mental concentration disorders. Some experts and scholars say that "white noise" is actually a sound suggestion given to us by nature, which can play a role in assisting some neurological diseases.

White noise refers to the fact that the power of the frequency component in a sound is uniform throughout the audible range (0 20kHz). Since the human ear is sensitive to high frequencies, this sound sounds like a noisy rustle.

White noise, or white noise, is a random signal or random process with a constant power spectral density. In other words, the power of this signal is the same in each frequency band, and since white light is a mixture of monochromatic light of various frequencies (colors), this property of this signal with a flat power spectrum is called "white", and this signal is also called white noise.

How to get it. Use a radio: The most economical and convenient way to do so is to use a CD player to listen to white sound. You can use small disk replication technology to copy some white sounds with moderate volume, and burn some obtainable white noise from nature and life on a single disc, which can be listened to at any time.

The biggest advantage of this method is that you can adjust the volume according to your feelings.

White noise refers to sound that has the same energy at all frequencies. This may not be easy for you to understand, so let's take a look at the spectrogram of white noise.

So let's take a look at the spectrogram of white noise:

The sound energy of the whole picture is very uniform at different frequencies, like a solid cloth spread out.

Just as white is a combination of light waves of all the same energy bands, white noise is also a sound that is a combination of all the same energy bands, and the two are extremely similar in this respect, hence the name white noise.

And there's the pink noise that we might have heard:

Although the pink noise is more noticeable at low frequencies, its energy is relatively uniform at all points in time.

Whether it's white noise or pink noise, we all sound like a rustle in a TV set.

Of course, the white noise mentioned above is only white noise in a serious sense, in fact, we now call many sounds with relatively stable energy and no specific meaning as white noise. A lot of white noise comes from nature, like ocean waves, streams, rain, wind, and so on.

White noise produced by the Sound Library will also be available soon. In order to give everyone an immersive experience, the white noise in the sound library is all recorded in real time. The white noise recorded in this way is not only irregular, non-distracting white noise, but the depth of the sound field created by the natural environment allows for a more immersive experience.

White noise refers to the fact that the power of the frequency component in a sound is uniform throughout the audible range (0 20kHz). Since the human ear is sensitive to high frequencies, this sound sounds like a noisy rustle.

For example, the sound of wind, rain, waves in nature, and the sound of fans and air conditioners in your home are all white noise.

If you want to listen to white noise, prepare for a good sleep on your mobile phone, and listen to it in the sound of sleep aid.

As long as it is a regular sound and not harsh, it can actually be regarded as white noise, such as the sound of insects, rain, firewood burning, and fans.