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Optimal modal spacing and density for\ud critical listening

By Bruno Fazenda and Matthew Wankling

Abstract

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

Topics: TA, QC
Year: 2008
OAI identifier: oai:eprints.hud.ac.uk:3546

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