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NOISE MAPPING  

A noise map is normally generated using computer software that calculates noise
levels from input data such as traffic flows and topography (e.g. ground levels)

 

Computer modeling is used rather than noise measurement as measurement would
be prohibitively expensive and it would be technically difficult to isolate different
sources of noise (e.g. that from road, rail, aircraft or industry).

 

Noise maps are normally contour maps showing areas of differing levels of noise
They can be maps of individual noise sources i.e. road traffic, railway traffic, aircraft
in flight or industry. However, all the sources can be combined into one map to give
an overall picture of the noise climate.







ENVIORNMENTAL NOISE MONITORING & MEASUREMENTS   

Our  range of noise monitoring solutions is very comprehensive. Based on our customer's inputs and demands we have designed instrumentation aimed at providing the solutions you need, regardless of whether you're in need of just a light-weight, portable, semi-permanent construction site monitoring system or complete systems for airport noise monitoring.

The choices are numerous and so are our solutions as well - not to make things complicated, but to ensure that you get what you need, and not what we may think that you need!

With this article we would like to introduce you to our range of environmental noise monitoring solutions. As you will see, flexibility is a keyword here - by combining the various elements available there will be solutions for virtually every noise monitoring application!
The outdoor microphone units have been designed for permanent installations in the field, such as airport noise monitoring or industrial noise monitoring systems.


A typical outdoor microphone system of this type includes anti-bird spikes, a windscreen and a rain cover, all of which are integral parts of the acoustic unidirectional characteristics offered by the system. The rain cover contains an electrostatic actuator enabling a precise in situ calibration at 1000Hz from the internal sine wave generator.

Optionally, the complete frequency response may be calibrated using an external generator. A special adaptor allows acoustic calibration. The microphone diaphragm and housing are made of stainless steel to withstand pollution and corrosion.


"type with 200V polarization voltage. The unit comes with a built-in A-curve spectral weighting network in addition to Flat response (no spectral weighting at all) and a 0 or ±20dB amplifier - all set by internal jumpers. An internal heating system is provided





 

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News & Events
The Polycarbonate Noise Barriers' work was completed by Envirotech in a good manner and also according to our specifications.
Shree Cement Limited  ....

Acoustic Enclosure supplied by Envirotech, has fulfilled CPCB Norms without affecting DG set performance.
PepsiCo India Holding Pvt. Ltd  ....

The Noise Test Booth designed by Envirotech (ESPL) has acieved the desired noise level i.e 35 dB(A) in side the chamber.
Maruti Suzuki Limited  ....

The design of Anechoic Chamber has fulfill our requirement & no echo generation was found inside the chamber .
Dongyong  ....

 

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