THE MEASUREMENT AND CALIBRATION OF SOUND REPRODUCING SYSTEMS

For decades, it has been widely accepted that a steady-state amplitude response measured with an omnidirectional microphone at the listening location in a room is an important indicator of how an audio system will sound. This paper examines both small and large venues, home theaters to cinemas, seeking a calibration methodology that could be applied throughout the audio industry. Room equalization schemes adjust the room curve to match a target believing that this ensures good and consistent sound. The implication is that by making in-situ measurements and manipulating the input signal so that the room curve matches a predetermined target shape, imperfections in (unspecified) loudspeakers and (unspecified) rooms are measured and repaired. It is an enticing marketing story.
Author: Toole, Floyd
Affiliation: Retired, Consultant to Harman International
Publication Date:August 18, 2015 Import into BibTeX
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=17839 
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