A-scale

A-scale

In sound-level meters, a weighting network, widely used to measure the noise levels in buildings or communities. The A-scale provides meter readings that correlate better with subjective judgments of noise than do readings of sound pressure levels (which are also taken with a sound level meter, but without a weighting network).
References in periodicals archive ?
The purpose is to determine if an employee is affected by work-related hearing loss as a result of possible noise exposure in those work environments found to exceed the Action Level threshold of an 8-hour time-weighted average of 85 decibels measured on the A-scale.
We propose that 1,000 colleagues from our administrative A-scale groups are at risk of dismissal or redundancy.
They fell from 94 decibels--measured on the logarithmic A-scale used by industry to approximate the human ear--to 78 decibels.
Delta pilots now reportedly will have the shortest time in the industry to reach the A-scale.