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MA. R.. Avis, BR. M.. Fazenda, and WI. J.. Davies, "Thresholds of Detection for Changes to the Q Factor of Low-Frequency Modes in Listening Environments," J. Audio Eng. Soc., vol. 55, no. 7/8, pp. 611-622, (2007 July.). doi: MA. R.. Avis, BR. M.. Fazenda, and WI. J.. Davies, "Thresholds of Detection for Changes to the Q Factor of Low-Frequency Modes in Listening Environments," J. Audio Eng. Soc., vol. 55 Issue 7/8 pp. 611-622, (2007 July.). doi:
Abstract: An investigation into the measurement of the thresholds of detection of modal Q factors in rooms at low frequency is measured. Key features of the approach taken include the use of music rather than test tones or noise as program material, and the manipulation of damping conditions for a range of modes over a broad low-frequency bandwidth as opposed to the control of one modal artifact within an array of surrounding uncontrolled resonances. It is shown that the detectability of Q-factor changes is directly proportional to the reference Q, and is weakly dependent on the presence and level of higher frequency reverberations. A threshold value of Q = 16 is suggested, below which further changes are unlikely to be detected.

@article{avis2007thresholds,
author={avis, mark r. and fazenda, bruno m. and davies, william j.},
journal={journal of the audio engineering society},
title={thresholds of detection for changes to the q factor of low-frequency modes in listening environments},
year={2007},
volume={55},
number={7/8},
pages={611-622},
doi={},
month={july},} @article{avis2007thresholds,
author={avis, mark r. and fazenda, bruno m. and davies, william j.},
journal={journal of the audio engineering society},
title={thresholds of detection for changes to the q factor of low-frequency modes in listening environments},
year={2007},
volume={55},
number={7/8},
pages={611-622},
doi={},
month={july},
abstract={an investigation into the measurement of the thresholds of detection of modal q factors in rooms at low frequency is measured. key features of the approach taken include the use of music rather than test tones or noise as program material, and the manipulation of damping conditions for a range of modes over a broad low-frequency bandwidth as opposed to the control of one modal artifact within an array of surrounding uncontrolled resonances. it is shown that the detectability of q-factor changes is directly proportional to the reference q, and is weakly dependent on the presence and level of higher frequency reverberations. a threshold value of q = 16 is suggested, below which further changes are unlikely to be detected.},}

TY - paper
TI - Thresholds of Detection for Changes to the Q Factor of Low-Frequency Modes in Listening Environments
SP - 611 EP - 622
AU - Avis, Mark R.
AU - Fazenda, Bruno M.
AU - Davies, William J.
PY - 2007
JO - Journal of the Audio Engineering Society
IS - 7/8
VO - 55
VL - 55
Y1 - July 2007 TY - paper
TI - Thresholds of Detection for Changes to the Q Factor of Low-Frequency Modes in Listening Environments
SP - 611 EP - 622
AU - Avis, Mark R.
AU - Fazenda, Bruno M.
AU - Davies, William J.
PY - 2007
JO - Journal of the Audio Engineering Society
IS - 7/8
VO - 55
VL - 55
Y1 - July 2007
AB - An investigation into the measurement of the thresholds of detection of modal Q factors in rooms at low frequency is measured. Key features of the approach taken include the use of music rather than test tones or noise as program material, and the manipulation of damping conditions for a range of modes over a broad low-frequency bandwidth as opposed to the control of one modal artifact within an array of surrounding uncontrolled resonances. It is shown that the detectability of Q-factor changes is directly proportional to the reference Q, and is weakly dependent on the presence and level of higher frequency reverberations. A threshold value of Q = 16 is suggested, below which further changes are unlikely to be detected.