Slightly mis-tuned parametric filters still effectively attenuate targeted room modes

Evidence

The experiment involved using a parametric filter to attenuate mode 0,1,0. The filter used was not a perfect match for the mode—it had a slightly lower Q—so the attenuation is less than it might have been. Perhaps this makes it even more of a real-world example. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1636

Categorization

• QUESTION: How robust are modal filters to Q mismatch in practice? This hints at a forgiveness margin worth quantifying.
• XREF: connects to: Exciting multiple room modes instead of one reduces frequency and spatial sound variation — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2033; Notching a room mode reduces woofer distortion and lets louder playback — Toole, Floyd E, Sound reproduction- the acoustics and…, 1631; Room modal bandwidths depend on decay time, not frequency — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2012 (+1 more)
• yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: Exciting multiple room modes instead of one reduces frequency and spatial sound variation — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2033; Notching a room mode reduces woofer distortion and lets louder playback — Toole, Floyd E, Sound reproduction- the acoustics and…, 1631; Room modal bandwidths depend on decay time, not frequency — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2012 (+1 more)