Room Mode Distribution
Room modes are resonant frequencies caused by sound waves bouncing between parallel surfaces. At these frequencies, standing waves create uneven bass response -- some positions hear exaggerated boom while others experience near-silence. Understanding and managing these modes is critical to achieving accurate low-frequency reproduction in each room of the MediaVerse complex.
Axial Mode Frequency Plot
Mode Density Histogram
Ratio Analysis
Bolt's optimal room dimension ratios minimize mode clustering by distributing resonant frequencies evenly. The ideal range is 1 : 1.14–1.39 : 1.39–1.65 (normalized to smallest dimension).
Mode Frequency Formula
where c = 343 m/s (speed of sound at 20°C)
n = mode order (1, 2, 3 ...)
L = room dimension in meters
Below fs, individual modes dominate.
Above fs, modes overlap → statistical behavior.
Modal Summary
Mode Coincidences
First length mode (53.3 Hz) and first height mode (62.4 Hz) are separated by 9.1 Hz — no problematic coincidence exists. The height mode is calculated at the 2.75 m acoustic ceiling (not the 3.15 m slab-to-slab height).
General treatment: Four floor-to-ceiling corner bass traps (100mm compressed rockwool, absorption coefficient 0.60 at 125 Hz) are specified for broadband low-frequency control. The room volume (14.08 m³) places the Schroeder frequency at ~238 Hz, meaning modal behavior dominates the entire bass range — standard practice for small voiceover booths.
Control, Studio, and Editing rooms show no critical mode coincidences. Their dimension ratios provide adequate mode spacing across the low-frequency spectrum. Standard corner bass traps and broadband absorption panels are sufficient for even modal decay in these spaces.