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Noise is technically one of the most complex and least understood
forms of
pollution.
Although by listening we detect
noise
with a great sensitivity, we have often difficulties to describe
it and we certainly cannot define it in technical terms -
we usually know
when noise is excessive,
but we cannot predict the required noise
reduction and, more important,
we cannot determine how to effectively
reduce
the excessive noise.
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The proper noise pollution
assessment and design of effective noise control measures require:
a. thorough understanding of acoustics,
b.
complicated and expensive sound analysing equipment, and
c. extensive practical
experience. |
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Having all the above, we provide outstanding, all-inclusive services in noise pollution measurement,
assessment
and engineering control, viz.
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1. |
environmental,
interior and
occupational noise measurements and analyses with NATA-calibrated, Class 1,
Brüel & Kjær (B&K)
Modular Precision
Real-Time Sound and Vibration Analysers type 2260 Investigator, with: |
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a. |
Enhanced Sound Analysis Software BZ7206 (1/3-octave band spectrum range:
6.3 Hz to
20 kHz); and |
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b. |
Fast Fourier Transform (FFT) Software BZ7208
(narrow-band spectrum from
0.1 Hz to 20 kHz, with resolution better than 0.5
Hz);
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c. |
Building Acoustics
Software
BZ7204
(measurements of sound insulation and reverberation time); and
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d. |
Sound Intensity
Software
BZ 7205
[identification/location of (major) sources of noise]. |
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2. |
overview, post-processing and
in-depth analysing of noise measurement data with
Brüel & Kjær (B&K)
software packages:
- Noise
Explorer type 7815; and
-
Evaluator
type 7820.
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3. |
noise
dispersion modelling;
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4. |
product noise rating compliance
certification - determination of
sound power level of a mechanical system on the spot, in your laboratory or factory,
without the necessity of
placing this system inside the anechoic or reverberant chambers (expensive) or in the acoustically free-field (in many cases
unattainable);
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5. |
assessment of aircraft, helicopter,
road traffic, motor sport, entertainment, industrial and/or community noise impact on residential premises;
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6. |
assessment of environmental noise according to
New South Wales Industrial Noise Policy (INP) published in January 2000 by then
Environment Protection Authority of New South Wales (EPA),
now New South Wales Department of Environment and Climate Change
(DECC);
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7. |
assessment of occupational noise according to
requirements of WorkCover Authority (WorkCover),
i.e. |
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a. |
Occupational
Health and Safety Regulation 2001 - Clause 49,
Chapter 4, Part 4.3, Division 4 - Noise management; and |
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b.
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Australian/New
Zealand Standard: Occupational noise management
(AS/NZS 1269: 2005).
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8. |
selection of optimal noise reduction methods;
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9. |
design of noise barriers, enclosures and silencers;
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10. |
redesign recommendations for the silencing of noisy machinery and processes;
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11. |
recommendations on modifications of both industrial buildings
accommodating noisy equipment
and residential buildings exposed to excessive noise;
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12. |
assessment of road traffic noise with U.S. Department of Transportation Federal Highway Administration Traffic Noise Model (FHWA TNM®; the successor of FHWA Stamina);
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13. |
certification of compliance with Australian
Design Rules:
- ADR 28/01 : External Noise of Motor Vehicles;
- ADR 39/00 : External Noise of Motor Cycles; and
- ADR 56/00 : Moped Noise;
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14. |
MOST
ADVANCED, VERY USEFUL BUT RARELY AVAILABLE measurements
of
sound
intensity
with
Brüel & Kjær (B&K)
Modular Precision
Real-Time Sound Analysers type 2260, with Sound Intensity Probe type 3595
(state-of-the-art
hand-held sound intensity system).
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is one of the UK's premier acoustic consultancies offering acoustic testing, sound insulation testing and sound solution.
See also:
     
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