What is it about?
Most rooms suffer from resonant problems which affect the way sound is heard within them. If the room is used to listen to reproduced sound (from loudspeakers or instruments), these resonances cause perceptible effects that will interfere with the correct audition of sound at low frequencies. The work described in this paper shows that the audibility of these resonant effects reduces drastically at shorter decay times. The perceptual thresholds defined in the paper can be used to achieve optimal listening conditions.
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Why is it important?
The definition of perceptual thresholds for resonances in rooms published here can be used to design the conditions under which rooms will provide an optimal space for listening to music. The results published in this work can be used by acousticians, architects and the DIY room builder to design the required treatment for optimal low frequency behavior.
Perspectives
This work stems from my initial research during my PhD. Many years and many experiments later I finally managed to actually measure frequency dependent modal thresholds which are more useful than those previously published by myself and others. I would love to see these thresholds being adopted in the room design recommendation and standards.
Dr Bruno Fazenda
University of Salford
Read the Original
This page is a summary of: Perceptual thresholds for the effects of room modes as a function of modal decay, The Journal of the Acoustical Society of America, March 2015, Acoustical Society of America (ASA),
DOI: 10.1121/1.4908217.
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