Knowledge
Low-frequency noise: what it is and how it can be investigated
Technical explanation of low-frequency noise, perception, sources, time and FFT analysis, limitations and simultaneous vibration measurement.
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Technical information to understand the problem before measuring
Technical notes on acoustic assessment, environmental noise, low frequency, vibration and survey planning.
Knowledge
When simultaneous noise and vibration measurement is useful
How synchronised noise and vibration measurement supports analysis of structure-borne transmission, events, equipment, traffic and low-frequency noise.
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Ambient, residual and specific noise: what is the difference?
Differences between ambient, residual and specific noise, measurement representativeness, source operation and disturbance assessment.
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How an acoustic assessment is planned
Steps in planning an acoustic assessment: objective, source, receiver, locations, periods, operation, weather, analysis and reporting.
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