What is the difference between noise and noise? 20

Murmur refers to any sound that is not in harmony with the surrounding sounds, or that is different from the surrounding sounds. Include any field.

Noise is a type of sound that causes irritability or excessive volume and endangers human health.

From the perspective of environmental protection, all sounds that hinder people's normal rest, study and work, as well as sounds that interfere with the sounds that people want to listen to, are noise.

From a physical point of view, noise is the sound produced when the emitter vibrates irregularly.

Personally, noise refers to incongruous sounds, but noise refers to sounds that have an impact on people, or even harmful.

Noise, dissonant-sounding, annoying sounds. For example, the sound of hitting the door, the sound of wind, the sound of scratching glass, the sound of industrial production, traffic, construction, etc. are all noises; Noise interferes with the sound of people resting, studying, and working.

Noise refers to any sound that is not in harmony with the surrounding sounds, such as signal interference, current noise, etc., and the degree is lighter than noise.

Miscellaneous, that is, a lot of sounds mixed together, may not be uncomfortable, or may be particularly annoying; Dry, especially loud, like a car honking, affecting people's normal life and rest.

There is no noticeable difference.

Murmurs are other sounds that are mixed in with normal sounds.

The noise is more than a higher decibel than the noise, which is even more unbearable.

01 Noise refers to the sound of chaotic changes in pitch and intensity, sounding discordant. It is caused by the irregular vibration of the articulatory body, and also refers to noisy and harsh sounds.

Noise will affect human life, interfere with people's rest, study and work, and even affect people's physical health, so what is noise?

Most of the general ambient noise comes from random noise sources, such as speeding cars, the honking of airplanes, the noise of people, and all kinds of noise around you**.

Generally speaking, noise is generated by the vibration of objects, and noise is defined from the fields of physics, physiology, and communication

1.Physics defines noise as the sound emitted when a sound-emitter vibrates irregularly.

2.Physiological definition of noise is any sound that interferes with people's normal rest, study and work, as well as sounds that interfere with the sounds that people want to hear. In this sense, there are many types of noise, such as cars on the street, talking in a quiet library, machines at a construction site, and the loud sound of the neighbor's TV.

3.The field of communication defines noise as an energy field that interferes with the transmission of signals, known as noise. The source of this energy field can come from internal systems or from external environments. Typical noises are white noise and thermal noise. The intensity of the noise is expressed as the signal-to-noise ratio.

Decibels: The sound that the ant Sun heard in the Gang Neng Cave.

Decibels: Feel quiet.

Decibel: The volume of the whispering nanochain.

Decibels: The hum of the refrigerator.

Decibels: The sound of normal conversation.

Decibels: equivalent to walking in the downtown area.

Decibels: cars on the road.

Decibels: The sound of the motorcycle starting.

Decibels: The sound of a decoration drill.

Decibels: The sound of an airplane taking off.

1. During the dynamic test, the noise level in the clean room should not exceed 70 decibels.

2. During the empty test, the noise level of the turbulent clean room should not be greater than 60 decibels; The noise level of a laminar flow cleanroom should not be greater than 65 decibels.

3. Due to technical and economic conditions, or when the noise is greater than 70 decibels and has no impact on production, the noise level can be appropriately relaxed, but it should not be greater than 75 decibels.

Upstairs and downstairs, between neighbors, conflicts caused by noise problems are becoming more and more common, recently, the Liushi Court of the People's Court of Yueqing City, Zhejiang Province has successfully resolved a dispute case caused by noise.

Nuisance pumps.

The "buzzing" sound of the water pump on the first floor has become Mr. Zhao's "nightmare" on the second floor, and the irregular sound every day has caused a lot of impact on Mr. Zhao's life. After several failed negotiations, in August 2021, Mr. Zhao sued the 10 neighbors upstairs to the court, demanding that the nuisance be removed and the water pump affecting his life removed and removed.

Mr. Zhao lives on the second floor of a community in Liushi Town. At the end of 2020, he found that his upstairs neighbors had installed water pumps in the entrances and exits of the first floor, and the operation of multiple water pumps day and night seriously affected Mr. Zhao's daily routine.

In response to Mr. Zhao's complaint, the neighbors argued that in 2020, due to a lack of water, the water supply pressure was insufficient, and a higher power pump was needed to meet the water needs of the residents on the upper floors. The first floor belongs to the public area, and everyone installs the water pump here, and also takes into account the residents on the second floor, and the water pump is also used during the day.

On-site case handling: The multi-party joint investigation was concluded after one year.

The presiding judge is well aware that if the neighborhood dispute case cannot be properly handled, the conflict is likely to further escalate and affect social harmony. In order to properly resolve the dispute, the presiding judge decided to resolve the case through mediation after clarifying the facts of the case and the focus of the dispute.

However, the first few mediations did not go well, and the two sides faced off and argued. In order to further grasp the actual situation of the disputed pump and carry out mediation between the two parties in a more targeted manner, the court invited municipal community staff and mediators to jointly visit the scene with the help of the mechanism of "court case handling and comprehensive management". Through on-the-spot visits to Huzhi and learning about the water supply and water supply of residents on the upper floors from professional institutions, after patient mediation by many parties, the 10 defendants finally either moved their own water pumps or replaced them with silent models.

At this point, the year-long contradictions and disputes have finally come to an end.

The judge said: The use of household appliances should be "noise-proof".

The noise of water pumps and air conditioners, as well as the excessive noise of TVs and stereos, are common causes of noise disputes between neighbors.

The newly revised Law of the People's Republic of China on the Prevention and Control of Noise Pollution, which came into effect on June 5, 2022, clearly identifies residential buildings as noise-sensitive buildings, and requires the use of household appliances, musical instruments or other household activities to control the volume or take other effective measures to prevent noise pollution.

Responsibility: Li Jiping.

Sounds that change pitch and intensity chaotically and sound dissonant. It is caused by the irregular vibration of the articulation body (as distinguished from "musical sounds").

The old name for noise.

Noises that interfere with people's rest, study and work, as well as sounds that interfere with the sounds that people want to hear, are classified as noise. In this sense, there are a lot of noises, such as cars on the street, talking in a quiet library, machines at a construction site, and the loud sound of the neighbor's TV.

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Under some special conditions, such as the blasting of the preparation of the letter line, due to improper protection or lack of necessary protective equipment, it can cause acute trauma to the auditory system due to the shock wave generated by the strong **, causing hearing loss.

Detonation deafness can be accompanied by the rupture of the eardrum imitation blind wheel, the destruction of the ossicular bone, the hemorrhage of the inner ear tissue, etc., due to the different degrees of injury, and can also be accompanied by the brain**. Clinical manifestations include tinnitus, otalgia, nausea, vomiting, vertigo, severe impairment or complete loss of hearing examination.

What does low-frequency, medium-frequency, and high-frequency noise mean?

We know that sound is produced by vibrations. The so-called sound frequency is the vibration frequency of the sound source. Frequency is read in Hz, and low-frequency noise refers to sound with a frequency below 500 Hz (octave).

In the range of the human ear, it is 20-500Hz is low-frequency, that is, the irregular sound produced by vibrating 20-500 times in one second is called low-frequency noise. The conventional definition is that frequencies below 250Hz are low frequencies, frequencies of 500-2kHz are medium frequencies, and high frequencies are 2kHz-16kHz. The sound that ordinary people can hear is between 20-20000Hz, below 20Hz is infrasound, and above 20000Hz is ultrasound.

Low, mid and high frequencies:

1.The sound frequency range of low-frequency noise is 20-200Hz, of which the frequency with a more obvious impact on the human body is mainly the frequency range of 3-50Hz.

According to the regulations on low-frequency noise, the following 200Hz is low-frequency: there are five main categories of low-frequency noise sources in residential areas: elevators, transformers, water pumps in high-rise buildings, air conditioning systems (including cooling towers) and traffic noise.

Among the 12 typical noise sources in power supply systems, underground garages, elevator equipment, heating systems, drainage and water supply systems, air conditioning equipment, and ventilation equipment, 9 of the frequency bands where the high sound pressure level is located are mostly low frequency bands. Therefore, low-frequency noise has become a high-impact noise source in residential areas.

2.There is no industry-wide and industry-wide value for midrange and high frequency. The mid-frequency band is the natural energy concentration of the socks, an important frequency band, and it is also the frequency band where the human ear is sensitive to hearing.

Generally speaking, if the low frequency affects the fullness, mixing thickness and strength of the sound, then the middle frequency affects the brightness, clarity and transparency of the sound. Due to the large span of the mid-frequency, the mid-frequency is divided into the lower mid-frequency and the upper mid-frequency. Of course, there is no rule for this demarcation.

It can be divided into the lower middle frequency below 1000Hz, and the upper middle frequency above 4000Hz.

3.High-frequency noise mainly comes from industrial machinery, modern vehicles, loudspeakers, construction sites, as well as the noise of shopping malls, sports and entertainment venues. These high-intensity noises harm people's organisms, make people feel tired, produce negative emotions, and even cause diseases.

Noise refers to the sound that should not be there in a certain environment. Generally refers to noisy, harsh sounds. From the point of view of environmental protection:

Any sound that interferes with people's normal rest, study and work, as well as sounds that interfere with the sound that people want to hear, is classified as noise. Noise is a type of sound that causes irritability or excessive volume and endangers human health. Noise pollution is mainly used in transportation, vehicle horns, industrial noise, building construction, social noise such as halls, loudspeakers, morning markets and people's loud talking.

To determine whether a sound is noise, it is not enough to judge from a physical point of view, subjective factors often play a decisive role. For example, a wonderful ** is a musical sound to someone who is appreciating**, but it can be a noise to someone who is studying, resting, or concentrating on a problem. Even if the same sound is in different states and moods, people will have different subjective judgments about the sound, and the sound may become noise or music.

Therefore, from a physiological point of view, all sounds that interfere with people's rest, study and work, that is, unwanted sounds, are collectively referred to as noise. Noise pollution occurs when noise has an adverse impact on people and the surrounding environment.

Standard value for noise.

Standard value category daytime evening.

At the construction site, different construction machinery and construction methods are used with the progress of the project and the replacement of the construction process. For example, in foundation engineering, there are earthworks blasting, tamping, and piling with the greatest noise

To put it simply, all sounds that interfere with people's normal rest, study and work, as well as sounds that interfere with the sounds that people want to listen to, can be called noise