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It is basically a curve on a graph, with octave bands on the x-axis, and Sound Pressure Level on the y-axis. they are used by designers and engineers as well as acoustics engineers to determine the noise floor of a given space. In Europe we use the ISO standard of Noise Rating Curves, they give a reference point of 1KHz. which makes it make a fair bit more sense! If you Google noise rating curves a fair bit of NC stuff comes up... not very useful to me but perhaps to you it might be.
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What is the A Weigting on a sound level meter?
The decibel A filter is widely used. dBA roughly corresponds to the inverse of the40 dB curve at 1 kHz equal-loudness curve for the human hearing.An A curve always provides for "nice" values when low frequency noise signals are included. An A filter of a measured motorcycle noise must show untrue values. You should know that. From a dBA measurement no accurate description of the expected volume is possible.
What kind of curve does a projectile make?
Parabolic curve
Can you make a bullet curve in the air?
No. A cross wind will cause it to curve slightly on the horizontal plane and gravity will make it curve vertically, but you cannot MAKE it curve unless you possess powers of telekinesis.
What most likely accounts for the difference between curve A and curve B on the energy diagram?
The reaction described by curve B is occurring with a catalyst.
What role does density play in nature?
yas this is the answer Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water Give the name of the outward curve found on the surface of water v
What is noise criteria?
Noise criteria, commonly known as NC, is a numerical index used to rate indoor noise, noise from air-conditioning equipment, and noise in any other given space.
What is the difference between noise rating NR and noise criteria NC curves?
5 dba NC 25 is approximately 30 DBA and NR 25 is 35 dbA.
What is the A Weigting on a sound level meter?
The decibel A filter is widely used. dBA roughly corresponds to the inverse of the40 dB curve at 1 kHz equal-loudness curve for the human hearing.An A curve always provides for "nice" values when low frequency noise signals are included. An A filter of a measured motorcycle noise must show untrue values. You should know that. From a dBA measurement no accurate description of the expected volume is possible.
What would cause a 1999 Chrysler Sebring LXI front driver side to make a loud growling noise not a popping noise when turning left around a curve but be completely quiet when turning to the right?
Could be a wheel bearing
Name three criteria of a good location for an air-cooled condensing unit?
1.code requirements 2.will not make noise 3. place with low shrubs
When does noise pollution occur?
Noise pollution requires two thing: a source of unpleasant, overly loud or unwanted noise and a person to be bothered by the noise. The criteria for the noise levels and sources are often set out in municipal or other guidelines which specify decibel levels and times of permissible noise. The "bother" caused by the noise is much more difficult to quantify and legal measures usually fall back on terms such as "loss of enjoyment of property"These two criteria are most often met in urban settings (cities, towns, etc.) The sources can be traffic, industrial processes, music or construction.Noise pollution can also occur in places where silence is seen as an aesthetic consideration. This would include areas such as nature preserves, meditative centres, and other places people go to "enjoy peace and quiet". The decibel level of noise pollution in such areas can be much lower.
How the sine curve related to a curve?
Basically, it IS a curve.
What is the c curve and d curve in MCB?
c curve & d curve mcb difference
Is it criteria are or criteria is if there is more than one criteria?
The singular form of "criteria" is "criterion." So, "criterion is" would be proper, as would "criteria are." "Criteria is" or "criterion are" would not.
What is Difference between simple curve and simple closed curve?
simple curve is a curve which doesnot cross itself,it neednot be closed....... but a simple closed curve is a curve which is simple and also closed. every simple closed curve is a simple curve but not vice versa.
What is the difference between a heating curve and a cooling curve?
heating curve is hotter than the cooling curve
Difference between learning curve and experience curve?
difference between leaning curve and experience curve
