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What is “current ongoing 12hr Leq” for NoiseLynx users?

Date: January 23, 2020
Under Singapore's Environmental Protection and Management (Control of Noise at Construction Sites) Regulations, Second Schedule, the 12 hours equivalent continuous noise level(LEQ12hrs) maximum permissible noise level for construction sites are set based on a start time of 7am and end time of 7pm for the DAY period. And from 7pm to 7am for the NIGHT period.  In order to know the 12hr Leq, a 12-hr measurement time would h...

Notes on Boundary noise limits for ACMV systems in non industrial buildings (Feb 2018)

Date: October 04, 2019
To conduct noise assessments of ACMV (air conditioning and mechanical ventilation) systems under NEA's guideline for TOP submission, each test point is tested for a 15 minutes equipment "ON" and another 15 minutes "OFF" state. As it would take time to switch equipment on and off, each point usually take about 45 mins to test. That is assuming a one-take measurement, and external factors such as a sudden event of airplanes, mo...