How is Noise Pollution Measured ?

Question

Give details regarding Octave Band and its importance

Answer 1

In decibels. That's all there is to it. A measure of total sound power.

Answer 2

Noise pollution, usually called environmental noise in technical venues, is displeasing human- or machine-created sound that disrupts the environment. The dominant form of noise pollution is from transportation sources, principally motor vehicles.

Noise is basically intensity of sound.
Since intensity of sound of sound is measured in decibels ,thus
Noise pollutionis also measured in decibels.
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After the unison, the octave is the simplest interval in music. The human ear tends to hear both notes as being essentially "the same". For this reason, notes an octave apart are given the same note name in the Western system of music notation—the name of a note an octave above A is also A. This is called octave equivalency, and is closely related to the concept of harmonics. This is similar to enharmonic equivalency, and less so transpositional equivalency and, less still, inversional equivalency, the latter two of which are generally used only in musical set theory or atonal theory. Thus all C#s, or all 1s (if C=0), in any octave are part of the same pitch class. Octave equivalency is a part of most musics, but is far from universal in "primitive" and early music (e.g., Nettl, 1956; Sachs & Kunst, 1962). Also monkeys experience octave equivalency, and its biological basis apparently is an octave mapping of neurons in the auditory thalamus of the mammalian brain

Answer 3

Octave band means a band with two frequencies a low frequency and a high frequency; the high frequency is double the lower one. The geometric mean of the two frequencies is the mid point frequency which is normally used for the band. If you want to find the higher frequency from the mid point frequency you multiply by the square root of two. For the lower frequency you divide by the square root of two. Humans hear frequencies between 20 and 10thousand hertz. The threshold of pain in hearing is 130 db. From this information one can calculate the mid band frequency for any decibel amount.

Answer 4

Currently the Passaic County Department mesaures noise pollution in decibels

Answer 5

Hi, Noise is measured by a noise meter comlying with IEC ??? standard type 2. It has the units of decibels (averaged) dB(A) taken usually from 7 meters away from source. But the distance may vary with the scenario.
Hope this answers your question!

Answer 6

Decibels as most people know.
However, it's divided up into different frequencies as, for example, low frequency noise damages buildings and can induce epilepsy. High frequency damages ears. Not of corn either...

Answer 7

Vibration Monitoring Sensor.
To be installed on a wall of building nearby source of noises.
Connect with read-out unit (Data logger)
Readings will show exceeding allwoable limits of decibles