The original Schroeder constant fits small rooms better than the revised one

Evidence

Above 200 Hz, the pattern becomes much less orderly, and the peak-to-peak variations are smaller. Yet, an underlying trend is visible, including the step at 500 Hz, which is a characteristic of this loudspeaker, a subwoofer running without a low-pass filter. The real transition frequency for this room appears to be around 200 Hz. The calculated Schroeder (crossover) frequency (fc) is 111 Hz (T = 0.4 s, V = 128 m3), which seems to be too low. Substituting the original constant, 4000, into the Schroeder equation would yield a better answer for this small room. — Toole, Floyd E, Sound reproduction- the acoustics and…, 481

Categorization

• corroborated: 2 independent passages support this claim — Toole, Floyd E, Sound reproduction- the acoustics and…, 481