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Journal Article Open Access

The Measurement and Calibration of Sound Reproducing Systems

Authors: Toole, Floyd

Journal of the Audio Engineering Society · Volume 63 · Issue 7/8 · pp. 512–541 · July 2015

Abstract

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.

Details

Publication
Journal of the Audio Engineering Society
Volume
63
Issue
7/8
Pages
512–541
Publication date
July 6, 2015
Affiliation
Retired, Consultant to Harman International (See document for exact affiliation information.)
Type
Journal Article