White Noise: what is it? It is efficient?

Sound can be very good to help you fall asleep. Calm sounds that give us peace are an excellent strategy to get a good night's sleep, especially the white noise or white noise. 





Many people would rather fall asleep than listen to the calm sound of white noise. It is a good solution for those who live in very noisy places and want restful nights. But what does this type of sound really consist of?

What is White Noise?

O white noise or white noise, is a set of low, medium and high frequency sounds, played at the same time and with the same intensity level. 

O sound of white noise effectively masks other sounds around. It's as if, in the middle of a crowd, you put headphones that cancel out the external noise and take you to another dimension. 


believe, this sound it's really good to hang up!



We're not going to give you a physics class, but if you want to know what this noise is in a little more detail, we can tell you that the white noise it has the same energy per cycle, which means that its frequency spectrum is completely flat (20 to 40Hz).

it's called white noise because it belongs to the white light spectrum, thus emitting bright white light.

This type of noise could be the sound of waves on the beach, the radio playing a relaxing music or even an announcer speaking in a calm voice, as in the famous radio show Pacific Ocean

Briefly, they are those sounds that override the background noise.

How it works?

O white noise makes the auditory capacity reach its maximum level, which means that the more intense auditory stimuli are less able to activate the cerebral cortex during sleep. 

This explains, for example, why some people manage fall asleep faster if the television is turned on at a moderate volume.

Cuts out background noise and therefore the sound or white noise it's often used on ambulance sirens, so we can immediately identify where they're coming from. 

To produce this type of sound, each frequency within the reach of the human ear is played in a random order and in the same amplitude. This results in a "shh" sound, which can also be associated with the television or to the radio.




A slamming door, for example, can interrupt your sleep. But it doesn't necessarily wake you up because it's a big noise. This type of sound will wake you up because it changes from a soft sound (silence) to a loud sound (door slamming). This change does not happen with the white noise.

O sound of white noise acts as a shield against unwanted and disturbing sounds, masking these changes in sound consistency. That's why it can be very useful for people who don't like to sleep in a completely silent environment.

What are the effects of White Noise?

O white noise proved to be effective in hospital patients. These environments are usually noisy and have background noise, which can disturb your sleep. 

Some studies suggest that the white noise it can reduce the time it takes patients to fall asleep by nearly 40% compared to patients who don't hear it. 

Other studies have also found that the white noise can help babies and toddlers to fall asleep faster. O white noise causes the baby feel safe and secure, as this type of sound is similar to what you heard in your belly. 

O sound of white noise also helps kids with concentration difficulties concentrating better during the classes.

White Noise and Sleep

O white noise soothes the brain, neutralizes and masks sleep-impairing sounds such as dogs barking, traffic, someone snoring or the alarm clock ringing. Works great on people who have insomnia, light sleep, and who wake up easily in the middle of the night.

But how does this happen?

The explanation is simple. Our brain continues to process sounds even when we are sleeping. That's why hearing is the only active sense during sleep. Curious, isn't it?

white noise is a type of sound that diminishes the ability of intense auditory stimuli to activate the cerebral cortex and interrupt the rest.

As we have already mentioned, the white noise is protective barrier for the other sounds, contributing to a healthier and quality night's sleep, as it induces an effect tranquilizer.

White Noise and Insomnia

as you have read in one of our articles, insomnia is difficulty falling asleep and staying asleep at night. 

If you do or did go through this, then you already know that the next day can be very complicated: lots of sleepiness and lack of energy.

O sound of white noise exists to help you reduce this problem. During the night, it will prevent your brain from being alert due to outside noises...

It can, therefore, be an excellent ally to fight the insomnia. In some cases, the white sound or noise it's so effective in inducing sleep that you can even avoid medication.

But, to further enhance these effects, you can (and should) also follow these tips:

  • Keep the room as quiet as possible
  • not listen white noise at a high volume 
  • Reduce room lighting

However, if insomnia still won't let you down, it's important to stress that you should always ask your doctor for advice.

O white noise help to to relax, especially on those stressful days when the mind won't shut down for nothing. In other cases, the white noise should be used as a complementary strategy for the treatment of sleep disorders. 

Where to find White Noise?

O white noise can be generated through the technology, such as a fan, an air conditioner or even a hairdryer. 

If you don't have any of that, there's an easier way to do it: use applications that play those sounds. All just a touch away.

We recommend these apps from white noise:


You'll find that lack of sleep will disappear in no time! Give it a try!


Each person is comfortable in a certain auditory spectrum, and that level can change when we want to relax or stay focused. However, it is essential to experiment until you find the best sound for you. 

While some sounds can help the brain focus on what's really important, others can help you shut down and relax, which is perfect for a good night's sleep.

Leave a comment

Please note, comments must be approved before they are published