Room reverberant fields typically rise in bass, necessitating bandwidth-matched equalizer cuts for distant miking

Evidence

Whatever the shape of the spectrum of the direct sound from musical instruments, or loudspeakers reproducing recordings of those musical instruments, the steady-state sound in a normal room will exhibit a version of that spectrum that rises at lower frequencies. Highly reflective concert halls attempt to preserve the limited sound output of musical instruments and voices in reflections, delivering as much of it as possible to listeners, while not masking temporal details in the music, and still creating a pleasant sense of envelopment. It is a difficult acoustical balancing act. Sound reproduction spaces are much less reflective: the principal cues to space and envelopment are in the multichannel recordings, and a volume control changes loudness at will. Loudspeakers designed with flat on-axis frequency responses, so as to accurately reproduce the initial timbral signature of the recorded sounds, will therefore exhibit a rising sound power output at lower frequencies. — , Toole, Floyd E - Sound reproduction-…, 1216 (#corroborates, via linked claim)

Categorization

• XREF: connects to: Flat on-axis speakers naturally produce rising bass power and downward-tilted room curves.; Room pressurization creates a compliant bass boost below the first axial mode; Bass rises in reflected room sound for all forward-firing loudspeakers (+8 more)

Broader Connections

• Reverberant fields typically color perceived sound with excess bass that equalization must fix #corroborates (1.00)
• Flat-response speakers unavoidably produce a bass-heavy steady-state room sound #corroborates (0.85) — , Toole, Floyd E - Sound reproduction-…, 1216
• Bass-rich music venues deliberately boost low-frequency reverberation to add warmth and lift weak fundamentals #qualifies (0.80)
• Notching a room mode reduces woofer distortion and lets louder playback #complicates (0.75) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1631
• Smaller rooms produce louder reverberant fields but shorter reverberation times #expands (0.72) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1806