Figure A2.1. Equal Loudness Contours Source: https://en.wikipedia.org/wiki/File:Lindos4.svg
Thus applying A-weighting to measured sound pressures more closely represents the frequency response of the human ear. Sound pressure levels that have been A-weighted are denoted by the symbol, dBA. 2.2 shows the A frequency weighting and several other common weightings.
48 of 58 Spendiarian & Willis Acoustics & Noise Control LLC
12/15/2019
Made with FlippingBook - professional solution for displaying marketing and sales documents online