Chapter |ten
Determination of Loudness
CHAPTER OUTLINE
Corrections to Zwicker’s Method
Dolby Leq(m) Movie Loudness/Annoyance
ITU-R BS.1770 — Loudness in Broadcast Programs
Loudness is a measure of how loud an acoustic signal sounds and we will naturally be interested in measuring acoustic sound in a manner that expresses precisely the loudness experienced. Depending on the application there are several methods for doing this.
In principle, a weighted measurement like IEC A is an attempt to measure sound as it is subjectively perceived. This, however, is very approximate and not sufficiently precise as a measurement of loudness.
The basis of loudness measurement is, ...
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