Meters have been introduced that aim to measure the human perceived loudness by taking account of the equal-loudness contours and other factors, such as audio spectrum, duration, compression and intensity. One such device was developed by CBS Laboratories in the 1980s.
The introduction of meters that measure human perception of loudness has been made, taking into account factors like equal-loudness contours, audio spectrum, duration, compression, and intensity. A notable example is a device developed by CBS Laboratories in the 1980s.