Noise monitoring

Noise monitoring with YDOC data loggers Noise is a very complex and fluctuating phenomenon mainly caused by human activities and therefore not following a natural course, with other words taking a sample now and then does not say much about this phenomenon and you need to sample continuously.

Sampling continuously produces an impractical amount of data, luckily our data loggers are provisioned with aggregation channels that can help to reduce it to manageable proportions.

To monitor noise you need a microphone that can measure and analyze sound pressure and that outputs a signal corrected against the sensitivity curve of human hearing (A-weighting), such signals are referred to as LA (A-weighted, sound level) and are expressed in dB(A).

An example of such a microphone/noise sensor is the Rika RK300-06-BA with MODBUS/RTU interface.

Commonly monitored noise parameters are:
Aggregation channel 1
[0] Exit
[1] Input parameter >> LA (Noise) (LA)
[2] Input type >> dB
[3] Aggregation period >> 00:10:00
[4] Average >> LAeq (Average)
[5] Minimum >> LAmin (Minimum)
[6] Maximum >> LAmax (Maximum)
[7] Gust >> Not used
[8] Deviation >> Not used
[9] Percentile 1 >> LA95 (Background) (95% descending)
[A] Percentile 2 >> LA10 (Peak Load) (10% descending)
[B] Percentile 3 >> Not used
[R] Remove
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Notes: