Spatial aspects of reproduced sound in small rooms

The Journal of the Acoustical Society of America
S Bech

Abstract

This paper reports on the influence of individual reflections on the auditory spatial aspects of reproduced sound. The sound field produced by a single loudspeaker positioned in a normal listening room has been simulated using an electroacoustical synthesis of the direct sound, 17 individual reflections and the reverberant field. The threshold of detection was measured using the method of adjustment for five reflections using three subjects for noise and speech. The thresholds have been measured for two simulated situations (1) a loudspeaker with a frequency independent directivity characteristics and frequency independent absorption coefficients of the room surfaces and (2) a loudspeaker with directivity similar to a standard two-way system and absorption coefficients according to measurements of real materials. The results have shown that subjects can reliably distinguish between timbre and spatial aspect of the sound field, that the spectral energy above 2 kHz of the individual reflection determines the importance of the reflection for the spatial aspects, and that only the first order floor reflection will contribute to the spatial aspects.

References

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Citations

Apr 17, 2012·The Journal of the Acoustical Society of America·Matthew J GoupellRuth Y Litovsky
Jan 18, 2007·The Journal of the Acoustical Society of America·Richard L Freyman, Rachel Keen
May 12, 2009·The Journal of the Acoustical Society of America·Rachel Keen, Richard L Freyman
Jul 7, 2007·The Journal of the Acoustical Society of America·Sascha SporsWolfgang Herbordt
Mar 3, 2015·The European Journal of Neuroscience·Ludwig WallmeierVirginia L Flanagin
Feb 12, 2014·Hearing Research·Marko TakanenVille Pulkki
Jun 13, 2015·Royal Society Open Science·Ludwig Wallmeier, Lutz Wiegrebe
Jan 1, 2000·The Journal of the Acoustical Society of America·R L FreymanR K Clifton
Jun 17, 2005·The Journal of the Acoustical Society of America·Barbara G Shinn-CunninghamTara J Martin
Dec 5, 2019·The Journal of the Acoustical Society of America·Neofytos KaplanisSøren Holdt Jensen

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