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Subjective preference of modal control methods in listening rooms

Fazenda, Bruno, Wankling, Matthew, Hargreaves, J. A., Elmer, L. A. and Hirst, J. (2012) Subjective preference of modal control methods in listening rooms. Journal of the Audio Engineering Society, 60 (5). pp. 338-349. ISSN 1549-4950

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Abstract

Methods to control the unwanted effects of low-frequency modes in critical listening rooms range from complex signal processing to the positioning of loudspeakers and listeners. A rigorous scientific experiment has been conducted to evaluate the perceived quality of eight low-frequency reproduction systems used to control the unwanted effects of room modes in a standard listening room. A strong correlation has been demonstrated between perceived improvements in quality and the decay times of low-frequency energy. For critical listening conditions, those systems ensuring a faster decay of low-frequency energy are preferred over those attempting to “flatten” the magnitude frequency response.

Item Type: Article
Uncontrolled Keywords: room modes, low frequency, CABS, modal control
Subjects: T Technology > T Technology (General)
Schools: School of Computing and Engineering > Music Technology and Production Research Group
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[1] H. Bolt Richard, “Frequency Distribution of Eigen- tones in a Three-Dimensional Continuum,” J. Acoust. Soc. Am., 10(3): 228–234 (1939).
[2] R. Schroeder Manfred, “The ‘Schroeder Frequency’ Revisited,” J. Acoust. Soc. Am., 99(5): 3240–3241 (May 1996).
[3] M. M. Louden, “Dimension Ratios of Rectangular Rooms with Good Distribution of Eigentones,” Acustica, 24(5): 101–04 (1971).
[4] R. Walker, “Optimum Dimension Ratios for Studios, Control Rooms and Listening Rooms,” Technical Report BBC Research and Development Report RD1993/8.
[5] O. J. Bonello, “A New Criterion for the Distribution of Normal Room Modes,” J. Audio Eng. Soc, 19: 597–606, Sept. 1981.
[6] R. Bucklein. “The Audibility of Frequency Response Irregularities”. J. Audio Eng. Soc, vol. 29 pp. 126–131 (1981 Mar).
[7] S. E. Olive, P. L. Schuck, J. G. Ryan, S. L. Sally, and M. E. Bonneville, “The Detection Thresholds of Resonances at Low Frequencies,” J. Audio Eng. Soc, vol. 45, pp. 116–127 (1997 Mar.).
[8] T. J. Cox, P. D’ A ntonio, and M. R. Avis, “Room Sizing and Optimization at Low Frequencies,” J. Audio Eng. Soc, vol. 52, pp. 640–651 (2004 Jun.).
[9] M. R. Avis, B. M. Fazenda, and W. J. Davies, “Thresholds of Detection for Changes to the Q-Factor of Low Frequency Modes in Listening Environments,” J. Au- dio Eng. Soc, vol. 55, pp. 611–622 (2007 Jul./Aug.).
[10] Goldberg, “A Listening Test System for Measuring the Threshold of Audibility of Temporal Decays,” Proc. Inst. Acoust., 27(5) (2005).
[11] M. Karjalainen, P. Antsalo, A. Makivirta, and V. Valimaki, “Perception of Temporal Decay of Low- Frequency Room Modes,” presented at the 116th Convention of the Audio Engineering Society (2004 May), convention paper 6083.
[12] B Fazenda, M. R. Avis, and W. J. Davies, “Perception of Modal Distribution Metrics in Critical Listening Spaces—Dependence on Room Aspect Ratios,” J. Audio Eng. Soc, vol. 53, pp. 1128–1141 (2005 Dec.).
[13] T. Welti and A. Devantier, “Low-Frequency Opti- mization Using Multiple Subwoofers,” J. Audio Eng. Soc, vol. 54, p. 347 (2006 May).
[14] A. Makivirta, P. Antsalo, M. Karjalainen, and V. Valimaki, “Modal Equalization of Loudspeaker-Room Re- sponses at Low Frequencies,” J. Audio Eng. Soc, vol. 51, pp. 324–343 (2003 May).
[15] A. J. Hill and M. O. J. Hawksford, “Wide-Area Psychoacoustic Correction for Problematic Room-Modes Us- ing Nonlinear Bass Synthesis,” J. Audio Eng. Soc, vol. 59, pp. 825–835 (2011 Nov.).
[16] P. Antsalo, M. Karjalainen, A. Makivirta, and V. Valimaki, “Comparison of Modal Equalizer Design Methods,” presented at the 114th Convention of the Audio Engineering Society (2003 Mar.), convention paper 5844.
[17] S. E. Olive, J. Jackson, A. Devantier, and D. Hunt, “The Subjective and Objective Evaluation of Room Correction Products,” presented at the 127th Convention of the Audio Engineering Society (2009 Oct.), convention paper 7960.
[18] L. L. Thurstone, “A Law of Comparative Judgment,” Psychological Review, 34(4): 273–286 (1927).
[19] S. Bech and N. Zacharov. The Perceptual Audio Evaluation: Theory, Method and Application (WileyBlack- well, 2006).
[20] International Telecommunication Union. “ITU- BS.1116 - Method for the Subjective Assessment of Small Impairments in Audio Systems including Multichannel Sound Systems,” Technical report, Geneva, Switzerland (1994).
[21] International Electrotechnical Commission, “IEC.60268-13,BS.6840-13 - Sound System Equipment - Part 13: Listening Tests on Loudspeakers,” Technical report, Geneva, Switzerland (1998).
[22] IK Multimedia, Advanced Room Correction Sys- tem, July 29th 2011. URL http://www.ikmultimedia.com/ arc/features/.
[23] S. Bech. “Perception of Timbre of Reproduced Sound in Small Rooms: Influence of Room and Loud- speaker Position,” J. Audio Eng. Soc., vol. 42, pp. 999–1007 (1994 Dec.).
[24] A. Celestinos and S. Nielsen, “Controlled Acoustic Bass System (CABS)—A Method to Achieve Uniform Sound Field Distribution at Low Frequencies in Rectangular Rooms,” J. Audio Eng. Soc., vol. 56, pp. 915–931 (2008 Nov.).
[25] A. Makivirta and A. Varla, Sound Reproduction Equipment and Method for Reducing the Level of Acoustical Reflections in a Room - United States Patent 6795557, application: 2000, published: 2004. URL- http://patent.ipexl.com/US/6795557.html.
[26] M.WolffA.Goertz and L.Naumann,“Optimierung der Wiedergabe von Surround Lautsprecheranordnungen in Tonstudios und Abhorraumen”, Tonmeistertagung, 22, English translation available at http://forums. klipsch.com/forums/storage/8/1485263/tmt2002 eng.pdf, 2001.
[27]M. R. Wankling, B. M. Fazenda, and W. J. Davies, “The Assessment of Low Frequency Room Acoustic Parameters using Descriptive Analysis,” J. Audio Eng. Soc., vol. 60, pp. 325–337 (2012 May).

Depositing User: Matthew Stephenson
Date Deposited: 25 Jul 2013 09:41
Last Modified: 02 Dec 2016 15:43
URI: http://eprints.hud.ac.uk/id/eprint/17980

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