Bass extension at −10 dB cutoff predicts loudspeaker fidelity ratings best

Evidence

The apparent preference for extended bass motivated Figure 2.5, where the low-cutoff frequencies for all of the loudspeakers were determined at two attenuation levels, −5 dB and −10 dB, relative to the reference 300–3000 Hz band. The normal −3 dB “half-power” level was also tried, but it yielded no relationship, which was anticipated because of the substantial effects of solid angle gains and bass resonances in small rooms. Therefore, it was not a total surprise to find that the relationship between “fidelity” rating and low-frequency cutoff reached a maximum correlation for cutoff frequencies determined at the −10 dB level. — Toole, Floyd E, Sound reproduction- the acoustics and…, 178

Categorization

Category: Factual Claims

• QUESTION: Why does the −10 dB criterion outperform −3 dB or −5 dB? The mechanism (solid-angle gain, room resonances muddying the −3 dB point) is hinted but worth chasing into the room-acoustics literature.

Related

• Low-frequency cutoff defined at −10 dB, not −3 dB, best predicts perceived fidelity. (similarity 0.96)
• Bass performance drives roughly 30% of overall loudspeaker sound-quality ratings. (similarity 0.87)
• Bass accounts for roughly 30 percent of perceived sound quality (similarity 0.87)
• Bass frequencies need far smaller level changes to halve perceived loudness (similarity 0.85)
• Equalizing only the low-Q resonance substantially improves subjective loudspeaker ratings. (similarity 0.84)
• Low-frequency performance drives roughly 30 percent of sound quality ratings (similarity 0.83)
• The listening room, not the loudspeaker, determines perceived bass quality. (similarity 0.82)
• Low-frequency room resonances dominate how loudspeaker placement affects perceived quality. (similarity 0.82)
• Interpreting mid-tier loudspeaker measurements is harder than spotting extremes (similarity 0.82)
• Room resonance excess masks loudspeaker bass deficiency to listeners (similarity 0.82)
• Delayed lateral sound can exceed direct sound by 10 dB before perceived equally loud (similarity 0.81)
• Gently rising bass response is both natural and preferred in loudspeakers (similarity 0.81)
• Low-frequency room resonances drive roughly 30 percent of perceived sound quality (similarity 0.81)
• Louder sounds are perceived as having more bass and bias subjective comparisons. (similarity 0.81)
• A pronounced single bass resonance near 40 Hz is preferred over insufficient bass. (similarity 0.81)