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Convention Paper

Optimal Modal Spacing and Density for Critical Listening

Authors: Fazenda, Bruno; Wankling, Matthew

AES Convention 125 · Paper 7584 · October 2008

Abstract

This paper presents a study on the subjective effects of modal spacing and density. These are measures often used as indicators to define particular aspect ratios and source positions to avoid low frequency reproduction problems in rooms. These indicators imply a given modal spacing leading to a supposedly less problematic response for the listener. An investigation into this topic shows that subjects can identify an optimal spacing between two resonances associated with a reduction of the overall decay. Further work to define a subjective counterpart to the Schroeder Frequency has revealed that an increase in density may not always lead to an improvement, as interaction between mode-shapes results in serious degradation of the stimulus, which is detectable by listeners.

Details

Published in
AES Convention 125
AES Convention
125
Paper number
7584
Publication date
October 6, 2008
Session subject
Listening Tests & Psychoacoustics
Affiliation
University of Huddersfield (See document for exact affiliation information.)
Type
Convention Paper