What is noise level? Effects and ways of limiting noise

Everyone also hears the phrase "environmental pollution" every day, but "sound pollution" is definitely a problem that many people are facing. Noisy sounds from laptops , refrigerators, washing machines ... have any effect on your health? Let's discuss with WebTech360 through the article below.

1. What is the definition of "noise level"?

The sound to disturb and affect ourselves, otherwise it makes me uncomfortable , do not want to hear can be referred to as noise . The living environment around us is always filled with all kinds of sounds, most of which we all classify them as "noise" such as the sound of cars on the street, the sound of production machines.

Even in our own house, there will always be noise, simply noise from the laptop's cooling system, noise during the operation of refrigerators, washing machines , air conditioners , ... and a lot more. other objects.

Thus, the unit for measuring sound intensity is known to everyone as the decibel (dB) . Normally, we only have to distinguish vaguely loudness such as "too noisy", "want to be deaf", "can still hear", ...

2. The intensity of the sound of the environment

Sound intensity from some activity in our surroundings is recorded and measured in dB:

3. Threshold of the level of sound intensity that humans can hear

According to scientific research, the normal human ear can hear sounds between 0 dB and 130 dB . However, depending on many factors such as health and physical condition, the maximum threshold of sound intensity that can be tolerated by some people will vary, some people have the maximum threshold of only 85 dB.

All sounds higher than the maximum threshold that the ear can tolerate have a direct negative effect on hearing and health.

Time to endure the noise:

80 dB threshold : Still acceptable and no support or protection is required.

From 80 dB to 90 dB : At this threshold, care should be taken that precautions can be taken to keep away from where noise is generated or to limit it.

90 dB threshold : Maximum per person per day can only withstand this threshold about 1 hour .

100 dB threshold : If there is no sound suppression / restriction device, we can only withstand a maximum of 15 minutes .

If you live for a long time in an environment with high intensity and prolonged noise, your hearing and health will inevitably deteriorate and worse conditions may develop.

4. How does noise affect health and life?

Noises that are too unbearable or living in noisy environments for a long time will have negative health effects.

4.1 Reduced or more severe hearing loss

Loud noises too loud sometimes will directly cause hearing loss .

If you live in an environment surrounded by long, loud noises such as homes near railroad tracks, plane runways, factories, ... your hearing will be impaired. words from time to time and can be lost completely.

4.2 Sleep Disorders

Noises can disturb your sleep, leaving you unable to sleep deeply or even losing sleep. The poor quality of sleep affects your working and learning during the day. Over time can also weaken health.

4.3 Causes increased blood pressure, cardiovascular disease, psychological health, and mental health

Exposure to noise over long periods of time can increase blood pressure, increase stress, and increase the incidence of cardiovascular disease.

Reference from source: Noise pollution - Wikipedia .

5. How is noise level measured?

5.1 Using a Noise Meter (Sound Intensity Meter)

The sound intensity meter is designed to measure parameters such as strength, sound level, frequency of the sound, ... the sound will be analyzed by circuits, amplifying and filtering in many different ways. .

On the market today, there are quite a few types of machines as well as diverse prices, from a few hundred thousand to several million depending on models and functions.

5.2 Use a noise meter app that can be installed on a smartphone

You can find quite a few noise meters in the app stores of your phone. There are a few applications that are trusted to use such as: Sound Meter , Decibel & noise detector , Sound & noise meter , ... Also because it is only software, it will not guarantee 100% accuracy, but you can still count on that for more effective noise reduction measures.

6. How to limit noise and its negative effects?

There are some noises that we do not have the authority to control or prevent from being released like cars on the street, factories in operation, planes, trains, etc.But there are ways to the environment closest to us minimizes noise pollution.

6.1 Construction of soundproof houses or living rooms

In the process of building or repairing your home, you can also note and use materials that can limit the noise from entering the house such as: Installing soundproof glass doors , using furniture. , wooden housewares , partitioning, plaster ceilings, ...

And especially, planting trees around the house just protects the environment, and can limit noise penetration somewhat.

6.2 Use household electrical appliances equipped with noise canceling technology

Most of the noise in the house will come from electronic appliances and appliances of the home. The older the equipment, when operating, will have loud running noise and noise.

The current refrigerators or washing machines all use Inverter technology, the internal apparatus can operate more smoothly. Or on the air-con with quiet operation mode, sleep mode helps you feel more comfortable.

6.3 The sound insulation itself

When there is no way to reduce background noise, you can use measures like earplugs and noise-canceling headphones to focus more on your study or work.

See more:

>>> Learn about active noise canceling ANC on headphones .

>>> What is noise-canceling microphone?

>>> Should choose to buy a laptop or a tablet to study online, study for college exams?

The information in the above article will hopefully help you to solve your everyday noise problem. Let's talk and discuss with WebTech360 in the comment area right below!