リラックス・ノイズ（ホワイトノイズ、ピンクノイズ）

The word "noise" is translated as "noise" and has the image of being noisy or disturbing.
Depending on how you use such noise, it has a masking effect that makes it difficult to hear other noises and an effect that improves the quality of sleep.

▼ Is there a color in the sound? What is colored noise?

Sound is not actually seen as color, but it may be expressed as color.
"Tone color" is written as the color of the sound. It is a word that refers to the feeling of sounds peculiar to pronunciation bodies such as human voices and musical instruments, and the world view.

However, what I will touch on this time is not the timbre, but the frequency.

"White light" means that when all the lights called "three primary colors of light" learned in elementary school are overlapped, they glow white.

There is noise that mixes sounds of all frequencies with the same intensity.

The sound of the "sandstorm" sir that flows at midnight on TV is that sound.

This sound is called white noise because of the same concept of "overlapping everything" as white light.

In the same way, noise under certain conditions corresponding to light is called "pink", "purple", "blue", "gray", and "brown".

There are also noises called "red," "green," and "black," although there is no exact definition.

And these are collectively called "colored noise".

▼ What is the effect of white noise?

White noise is said to have the effects of improving concentration, relaxing, and sleeping.

When I actually listen to it, it makes a sound close to the babbling of a stream, so it's soothing.

It also has a masking effect that makes it difficult to hear jarring sounds because all frequencies audible to the human ear are evenly mixed.

It's a addictive sound, so please listen to it.

Natural sounds of other colored noise and their benefits

▼ White noise
(Sound of nature) The murmuring of a stream, the sound of the wind
(Utility) Increased concentration, sleep
(Playback) White noise

▼ Pink noise
(Natural sounds) Womb sounds, heartbeat sounds
(Utility) Increased concentration, sleep
(Playback) Pink noise

▼ Blue noise
(Sounds of the natural world) Sounds of waves on the beach, sounds of waterfalls
(Utility) Increased work efficiency
(Playback) Blue noise

▼ Purple noise
(Natural sounds) Faucet sounds, shower sounds
(Utility) Inspiration up, sleep introduction
(Playback) Purple noise

▼ Brown noise
(Sound of nature) Sound of the sea, distant transportation network
(Utility) Introducing sleep, measures against night crying