Small-Room Acoustic Mode, Placement & Absorption Workbenches
RoomTamer provides two comprehensive, static-HTML-first acoustic reference matrices paired with 100% browser-local interactive solvers. Every optimal room ratio, wavelength table, and 24-material octave-band absorption row is rendered directly in raw HTML for immediate reading and printing without cloud accounts or external API dependencies.
Static HTML Reference + Local Solver
Small Room Axial/Tangential/Oblique Standing-Wave Mode, Schroeder Frequency & 38% Listening Geometry Planner
Static Bolt/Sepmeyer/Louden room ratio tables and interactive 3D Rayleigh eigenfrequency solver computing axial, tangential, and oblique room modes (20–300 Hz), Schroeder crossover frequency, SBIR quarter-wave front-wall cancellation nulls, and 38% equilateral monitor coordinates.
Open Small Room Axial/Tangential/Oblique Standing-Wave Mode →
Static HTML Reference + Local Solver
Acoustic Material Octave-Band Absorption Coefficient (125 Hz – 4000 Hz) & Air-Gap Reference Matrix
Provisional 24-material reference matrix (original report verification incomplete) (Owens Corning 703/705, Rockwool Safe’n’Sound & Comfortboard 80, acoustic foam, PET felt, drywall, concrete, glazing, carpet) with octave-band Sabine coefficients, NRC, gas flow resistivity (Pa·s/m²), and live Sabine/Eyring RT60 estimator.
Which acoustic workbench fits your room design task?
| Your Room Acoustics Question | Recommended Reference Workbench | Quantitative Outputs & Static Tables |
|---|---|---|
| Where are the axial, tangential, and oblique standing-wave bass peaks and nulls in my rectangular room between 20 Hz and 300 Hz? | 3D Standing-Wave Mode, Schroeder & 38% Placement Planner | Solves f = (c/2)·√((nx/L)² + (ny/W)² + (nz/H)²), flags modal Bonello clusters/degeneracies within 5% of each other, and tabulates Bolt, Sepmeyer, and Louden optimal room dimension ratios. |
| What is my room’s Schroeder crossover frequency, where should I place my listening chair (38% rule), and at what frequency will the front wall cancel my monitors (SBIR)? | 3D Standing-Wave Mode, Schroeder & 38% Placement Planner | Computes f_s = 2000·√(RT60/V), exact 38% front-wall and 60° equilateral monitor coordinates, and quarter-wavelength SBIR cancellation notches (f_null = c / (4·d)) as a front-wall approximation, with separate image-source path estimates for front, side, floor, and ceiling boundaries. |
| How do Owens Corning 703/705, Rockwool Safe’n’Sound, Comfortboard 80, acoustic foam, and PET felt compare at 125 Hz and 250 Hz with and without an air gap? | 24-Material Octave-Band Absorption & Air-Gap Matrix | Lists octave-band Sabine absorption coefficients (125, 250, 500, 1000, 2000, 4000 Hz), NRC, and gas flow resistivity (Pa·s/m²) across 24 material and mounting examples; matching product reports remain unverified. |
| How do theoretical RT60 estimates change when I vary the number of panels and assumed absorption coefficients? | 24-Material Octave-Band Absorption & Air-Gap Matrix | Calculates octave-band Sabins (`A = Σ S_i · α_i`) and compares both classic Sabine and Norris-Eyring RT60 before and after adding your chosen treatment panels. |