Noise pollution is more and more serious affecting the human body health
Afraid of noise has been hesitant to wind field project one of the main reasons, but most people don't know what is the noise of the windmill.
What is noise? What is music? Vocal cords, strings, objects such as wood board, motor vibration will emit sound waves, sound waves through the air into our ears, is that we hear the sound. Sound has the branch of noise and music: irregular vibration sound, such as wood board, motors, etc., called the noise; Vibration regularly, such as vocal songs, made by the string sound, call too. Sound is mainly used in music too.
Noise of the seven major health hazards:
1) damage hearing.
2) interfere with sleep.
3) interfere with thinking.
4) impact on physiological effects: the nervous system, such as headache, sleep disorder, causing blood pressure to instability.
5) to the psychological effects: cause worry, panic, environmental noise in the growth of children's intelligence 20% lower than the children's intelligence in the quiet environment.
6) cause cardiovascular disease.
7) increases the risk of elderly stroke.
The hustle and bustle of the city noise let many sleepless nights. This is a type of rotary smash grille borrow the car and the active noise reduction technology design of headphones noise glass sucker. When using it on the glass surface, open the device will automatically select different noise source, after all you can to block or get through a single voice, like a bird. What is wind noise. To the question "to hear", Arup group of horses, spent two weeks in wind field recorded various real voice, set up in different wind speed, distance and direction parameters of sound file, which can simulate the noise of all kinds of complicated situations.
Square dance community residents "noise" :
Ask you a question: every night, you are out of the window, be quiet or noisy? There is no one in the square dance? Recently in wuhan, hubei occurs square dance "PoFen" caused by the incident. Reporters found that due to the square dance neighborhood contradiction problem, has existed in many area. Because of the space is limited, "oldies" can only open place downstairs to dance. According to YangChunShi epa day and night for the central plaza, the noise of the detection, found are overweight. Because the square park where noise pollution is the public security organ shall have the right to dissuade and fines. Why can't let the noise of the central square YangChunShi public security bureau the volume to the standard? Around the tens of thousands of people, students, and the patient's body and health, sleep, watch TV rights, etc. Why not protected? Square can be fun, but please do not excessive noise.
Field testing found that the noise is far supranational standard. Don't respect for others, there is no access to social harmony, ultimately harm the rights of everyone. Condemns the illegal type rights at the same time more rights mechanism should be established and noise may seem small, but affect our happiness, don't make used indifference and damage the rights of others. Be quiet, can hear the sound of others.
Don't play exciting music while driving:
Automobile sound insulation can reduce the noise of the car driving process, and can improve the car stereo sound pressure and sound. Automobile noise by damping materials of automobile sheet metal vibration and sealing treatment, reduction of car audio sound pressure and sound effects, etc., at the same time through damping materials and sound insulation materials for cars on vibration and sound insulation treatment, reduce the noise of automobile sheet metal structure transfer improve the driving comfort.
If more than 90 db noise, the sensitivity of the eye to light decreases, easy cause eyestrain. Under normal circumstances we talk of 50 db, 90 db (a) is equivalent to place oneself in a music bar. Driving at night, in particular, more attention should be paid to.
Open convertibles or driving on the way to open the window, the noise and the construction site is almost no difference, so it is easy to damage hearing. St. Louis university school of medicine, the researchers said the speed up to 120 km/h, the noise could be as high as 100 decibels. Even if the speed is only 90 km/h, the noise will be more than 85 decibels. When the speed of 120 km/h, the noise level is equal to the jet noise from overhead.
Four noise signals need attention
A, new or abnormal noise signal is usually a car trouble instructions.
B, the indicator on the dashboard is the place where another can not be ignored.
C, if you are driving feel tilted steering wheel tight, bus, or in a certain speed range of abnormal vibration, need to check the tire, or wheel balance and positioning.
If d, auto start smoothly.
Construction noise for one year, residents suffer from insomnia, xiamen ring and grille door decoration is too large for the dust and noise, employees are forced to half a day off, at the same time with jin chengguo border. Has signed a contract or negotiate the customer friend, please contact related personnel, contact inconvenience, still hope understanding customer friends. Another: jin chengguo border has forced next door can only night construction, so the normal work tomorrow.
Otherwise due to the site roar and sleep the whole night through? Brought about by the designer Rudolf Stefanich window (than) the noise of the muffler is expected to solve this problem. After using the ANC active noise reduction technology, choose a certain noise, it can produce a superposition with reverse phase of voice, so as to reduce or even eliminate the noise. Artifact, finally can set his mind at to sleep!
Friendship remind: to some soft music,!
White noise, hear the term, you might first think of when the TV couldn't received signal presents a gray pitting. From the Web design perspective, the term indicates user cannot be correctly guide to Web content, thus lose interest in site, the attention. This is very famous in Web design and development of the community of a concept, used to highlight the contents of the first design method. First, the design method of the content can reduce the possibility of advertising to grab limelight.
Regular users browse the Web site may be encountered this kind of scene: when you browse a Web site by chance, suddenly found himself can't find want to see the content, but in too many "additional content" (such as advertising, etc.). Advertising, product placement will disturb the user to read too much content, this is a bad user experience, even lead to users to leave, and have bad impression on the site.
Open convertibles or driving on the way to open the window, the noise and the construction site is almost no difference, so it is easy to damage hearing. St. Louis university school of medicine, the researchers said the speed up to 120 km/h, the noise could be as high as 100 decibels. Even if the speed is only 90 km/h, the noise will be more than 85 decibels. When the speed of 120 km/h, the noise level is equal to the jet noise from overhead.
Four noise signals need attention
A, new or abnormal noise signal is usually a car trouble instructions.
B, the indicator on the dashboard is the place where another can not be ignored.
C, if you are driving feel tilted steering wheel tight, bus, or in a certain speed range of abnormal vibration, need to check the tire, or wheel balance and positioning.
If d, auto start smoothly.
Construction noise for one year, residents suffer from insomnia, xiamen ring and grille door decoration is too large for the dust and noise, employees are forced to half a day off, at the same time with jin chengguo border. Has signed a contract or negotiate the customer friend, please contact related personnel, contact inconvenience, still hope understanding customer friends. Another: jin chengguo border has forced next door can only night construction, so the normal work tomorrow.
Otherwise due to the site roar and sleep the whole night through? Brought about by the designer Rudolf Stefanich window (than) the noise of the muffler is expected to solve this problem. After using the ANC active noise reduction technology, choose a certain noise, it can produce a superposition with reverse phase of voice, so as to reduce or even eliminate the noise. Artifact, finally can set his mind at to sleep!
Friendship remind: to some soft music,!
White noise, hear the term, you might first think of when the TV couldn't received signal presents a gray pitting. From the Web design perspective, the term indicates user cannot be correctly guide to Web content, thus lose interest in site, the attention. This is very famous in Web design and development of the community of a concept, used to highlight the contents of the first design method. First, the design method of the content can reduce the possibility of advertising to grab limelight.
Regular users browse the Web site may be encountered this kind of scene: when you browse a Web site by chance, suddenly found himself can't find want to see the content, but in too many "additional content" (such as advertising, etc.). Advertising, product placement will disturb the user to read too much content, this is a bad user experience, even lead to users to leave, and have bad impression on the site. |
