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Noise and sleep explained

Noise and sleep explained

Noise often prevents the rest needed for adequate mental welfare and recuperation in three ways: 
 

  • Lack of sleep has a strong influence our health and welfare
  • Sleep prevention, arousal from sleep, and alteration of sleep patterns
  • Sensitivity to noise varies and women, particularly mothers, are more susceptible than most
  • Young children spend most of the time sleeping
  • Young and middle-aged adults need from 7 to 8 hours of sleep per day
  • A common ‘myth’ is that people can get by on little sleep (such as less than 6 hours a night) with no adverse effects
  • In the early 1900s most people slept 9 hours a night. But surveys show the average adult now sleeps fewer than 7 hours a night.
  • More than one-third of adults report daytime sleepiness so severe that it interferes with work, driving, and social functioning at least a few days each month.
  • Evidence also shows that children and adolescents’ sleep is shorter than recommended.
  • Lack of sleep may have a direct effect on children’s health, behavior, and development
  • Public noise events of a raised level can prevent, or delay going to sleep.
  • Often a large noise contributor is a neighbour’s barking dog.
  • Many influences can occur in sleep that can change the pattern without complete arousal. The sleeper may not even be aware of the adverse effect of this change.

HERE AT ESION WE HAVE ALL THE SOLUTIONS FOR ALL YOUR NOISE ISSUES, ENABLING EVERYONE, WHETHER AT HOME, IN THE WORKPLACE OR ABOUT TOWN TO ENJOY A PEACEFUL AND STRESS FREE LIFESTYLE. 
FOR CHILDREN. ACOUSTIC BLANKETS. ESIONBABY.COM
FOR ADULTS. NOISE-FREE BEDROOM. ESIONHOME.COM
FOR PETS. NOISE-FREE KENNELS. ESIONPET

Stages of Sleep

  • Waking. The waking stage is referred to as relaxed wakefulness, this is the stage in when the body prepares for sleep. Everyone falls asleep with tense muscles, their eyes moving erratically. (Rapid Eye Movement (REM) As a person becomes sleepy, the body starts to slow down, muscles begin to relax and eye movement slows to a roll.
  • Stage 1. (drowsiness) There is a big reduction in bodily activity from wakefulness to Stage 1. Eyes are closed, but if aroused, a person may feel as if they have not slept. This stage may last for five to 10 minutes.
  • Stage 2. (light sleep) shows varying peaks and troughs of brain activity. These waves indicate sporadic durations of muscle tone and periods of relaxation. Muscle tone of this kind can also be seen in other stages of sleep as a reaction to external sounds and vibrations. The heart rate reduces and body temperature decreases. At this point, the body starts to enter deep sleep.
  • Stages 3 and 4. These are deep sleep stages. These stages are the slow-wave sleep. During slow-wave sleep, especially during Stage 4, records show a pattern of deep sleep.
  • Deep sleep (stage 3 non-REM sleep) triggers more release of growth hormones, which contributes to growth in children and boosts muscle mass and the repair of cells and tissues in adults and children.
  • Sleep’s effect on the release of sex hormones also contributes to puberty and fertility.
  • During sleep, your body creates more cellular hormones that help the immune system fight infections. Lack of sleep can reduce your ability to fight off infections.
  • Not only is a good night’s sleep required to form new learning and memory pathways in the brain, but sleep is necessary for those pathways to work well. Several studies show that lack of sleep causes the thinking process to slow down. Lack of sleep also makes it more difficult to focus and pay attention. Lack of sleep can make you more easily confused. Studies also found that a lack of sleep leads to bad decision making and unnecessary risk taking. A lack of sleep slows down your reaction time, which is particularly important to driving and other tasks that require quick responses. When people who lack sleep are tested on a driving simulator, they perform as poorly as people who are drunk!
  • Sleep gives your heart and vascular system a much-needed rest. During non-REM sleep your heart rate and blood pressure progressively slow as you enter deeper sleep.
  • During REM sleep, in response to dreams, your heart and breathing rates can rise and fall and your blood pressure can be variable. These changes throughout the night in blood pressure and heart and breathing rates seem to promote cardiovascular health.
  • It is known that levels as low as 40dB(A) will awaken 5% and at 70 dB(A) about 30% of people.
  • Intrusive transient sounds, such as music or speech, can cause awakening or disrupt the stage of sleep.
SLEEP STAGE DISRUPTIVE SOUND LEVEL
REM 30 - 90 dB(A)
1 30 - 40 dB(A)
2 30 - 40 dB(A)
3 50 dB(A)
4 80 dB(A)

To reduce noise interference we can:

 

  • Close the window.
  • Turn on music.
  • Think of something else; distract yourself.
  • Count down until sleepy.
  • Add more pillows.
  • Change rooms.
  • Wear earplugs.
  • Ask the person making the noise to be quiet.
  • ADD SOUNDPROOFING.


While it’s not clear how effective these options are, and they may only apply to specific noise sources. 
With the last example the ‘solution’ itself could create stress and anxiety, which would be detrimental to the listener’s health and welfare. 
THE ADDITION OF SOUNDPROOFING IS THE MOST EFFECTIVE AND PASSIVE RESPONSE.

HERE AT ESION WE HAVE ALL THE SOLUTIONS FOR ALL YOUR NOISE ISSUES, ENABLING EVERYONE, WHETHER AT HOME, IN THE WORKPLACE OR ABOUT TOWN TO ENJOY A PEACEFUL AND STRESS FREE LIFESTYLE.

Got a special request? WHICH SOUND PROOF PRODUCT IS RIGHT FOR YOU?
We are here for you and your children! Send us a message.

What is noise?

  • Machinery use has increased exponentially since the birth of the industrial revolution.
  • One by-product of machinery use, is noise.
  • Noise has a variety of definitions, depending on the circumstances and the effects it produces.
  • Noise is different to sound. Sound is a variation in pressure that can be detected by the ear, while noise is considered to be undesirable by the recipient. In other words noise can be any sound that intrudes, disturbs or irritates.
  • Sound is measured in decibels (dB). The threshold of human hearing is 5dB and a sound of around 150dB is thought to produce immediate hearing damage.
  • However, volume is not the only thing that can affect response to sound. Unexpected sound, repetitive bass beats, screeches or whines can be just as annoying.

 

  • Typical noise categories: architectural, industrial, traffic.
  • Industrial – construction works, construction machines, manufacturing, workshops, agricultural;
  • Commercial and leisure entertainment, sports and leisure premises, petrol stations, car washes, hot food premises, bars, restaurants, shops.
  • Domestic - DIY, music, television, parties, animal noise, shouting, house alarms, and other.
  • Neighbourhood noise: Construction, demolition and road works;
  • Transport – road vehicles, railways, civil and military aircraft, vehicle alarms, delivery vehicles; and Street noise – loudspeakers, chimes, street, traders and performers and public addresses.

 

Sound Level (dB(A)) Environmental Conditions
140 Pain Threshold (134dB(A))*
120 Nightclub speaker (120dB(A))
100 Pneumatic drill at 5 m (100 dB(A)) 
Heavy goods vehicle from pavement
90 lawnmower at operators ear
80 Average traffic on street corner (74 dB(A)) 
Vacuum cleaner at 3m
70 Telephone ringing at 2m 
Conversational Speech
60 Social Night time (45-55dB(A)) 
Business office (54 dB(A))
50 Living room in suburban area 
Refrigerator at 2m
40 Library (34 dB(A))
30 Bedroom at Night
10 Threshold of hearing

 

  • Even low sound levels can be a cause of change in sleep patterns, except when a person is in deep sleep. The sound level to cause a change in sleep stage must be at least 5 dB above the existing ambient

  • Because social night time levels may range from 45 to 55 dB(A) and older persons spend more time in Stage 1 sleep, it is not surprising that sleep interference complaints come from them.
  • This is one reason why home soundproofing systems are used to create a raised steady ambient level.


HERE AT ESION WE HAVE ALL THE SOLUTIONS FOR YOUR NOISE AND SLEEP ISSUES, ENABLING EVERYONE, WHETHER AT HOME, IN THE WORKPLACE OR JUST OUT AND ABOUT TO ENJOY A PEACEFUL AND STRESS FREE LIFESTYLE.

NOISE CONTROL

The two major sources of noise in architecture are: 
1. Airborne noise, or sound waves transmitted from a source to a receiver through the air. 
2. Structure-borne noise is caused by vibration from within a building caused by footsteps or machinery. Vibrations are directly transferred through the building’s structures and materials. 
 

  • When sound waves travel through air or materials, the transmitted. Sound Pressure Level is reduced due to sound power loss. Almost every material exhibits sound insulating properties. They only vary in their level of acoustic performance.
  • When two layers of sound barriers are installed independently, the sound resistance ability of the entire wall will be increased.
  • A sliding double-glazed window provides horizontally offset openings that allow natural ventilation while preventing direct projection of traffic noise. The narrow path between the two windows dissipates sound energy and lowers noise levels relatively.
  • Noise barriers can absorb and redirect the paths of noise away from residential and pedestrian, zones. They can be artificial (a wall) or natural (trees). Common applications for noise barriers are to prevent traffic and construction sounds from penetrating nearby housing estates / apartment blocks and retail outlets.


HERE AT ESION WE HAVE ALL THE SOLUTIONS FOR ALL YOUR NOISE ISSUES, ENABLING EVERYONE, WHETHER AT HOME, IN THE WORKPLACE OR ABOUT TOWN TO ENJOY A PEACEFUL AND STRESS FREE LIFESTYLE.

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