Free guide: Measuring sound levels in decibels

摘要

A free guide to measuring sounds levels in dB is now available. It notes the main difficulty in comprehending dB measurement is its' log-linear scale. While it is useful to represent very large differences in a more user-friendly scale, it also compresses the scale. Sound is defined as any pressure variation that be be heard by the human ear. Threshold of Hearing is defined as 0 dB; the threshold for pain is around 130 dB - both readily understood, notes the guide.