NVHEnvironmental monitoring / occupational health / third-party testing
IEC 61672 Equivalent Sound Level and Time Statistics
01
Pain Points
- !Environmental/occupational/workshop noise all need A/C/Z weighting, with many metrics (Leq/Lmax/Lpeak/statistical levels).
- !Fast/Slow/Impulse time weighting and limit comparison are easy to mix up, slowing report production.
- !Day/evening/night grouping is cut by hand, with inconsistent conventions.
02
The Tinia Approach
Weighting and statistical conventions are all fixed in node parameters; Leq/Lmax/statistical levels + day-evening-night grouping + limit evaluation re-measure consistently in one click.
A/C/Z weightingFast/Slow/ImpulseStatistical levelsDay-evening-night groupingLimit evaluation
03
Nodes Used
Frequency Weightingweighting_filter
A / C / Z weightingSound Level Meterlevel_meter
Fast / Slow / Impulse time weightingIndicator Mathindicator_math
Leq / Lmax / Lpeak / statistical levels + time-period groupingSpec Limit Checkspec_limit_check
Statutory limit evaluationCore nodes; add or remove steps as needed for your data and standards — the node graph is always editable.
04
Expected Output
- Value tables for L_Aeq / L_AFmax / L_Cpeak etc. with limit indicators.
- Day / evening / night time-period distribution statistics.
- A compliance report with fixed conventions and consistent re-measurement.
Reference Standards / Engineering PracticeIEC 61672-1 Class 1/2
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