What is LMAX?
LMAX, or Maximum Sound Level, is the highest averaged sound pressure level recorded during a measurement period, based on a selected time weighting (like Fast or Slow).
It tells you how loud the noisiest moment was, not the instantaneous peak, but the loudest value that’s been smoothed over a short period.
LMAX is commonly used in noise assessments for workplaces, events, and construction sites where understanding the most disruptive or hazardous noise levels is essential. It’s especially important when comparing against regulatory limits or guidelines.
In this video, we explain how LMAX is different from LPeak, why time-weighting matters, and where LMAX fits in acoustic monitoring. Want more straightforward explanations of technical terms?
Check out the AcSoft Knowledge Hub, packed with expert insights, FAQs, and practical resources for noise and vibration monitoring.
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