Sound Lab — Acoustic panel & room calculation

Panel Engineering

Panel product

SKU and unit cost apply to the installed area.

Cavity fill

Thickness (mm): 12

Hole Diameter (mm): 8

Perforation Rate (%): 5

Cavity depth (mm): 100

Flow resistivity (Pa·s/m²): 25000

Rayls/m of the porous fill. 0 = empty cavity (air spring only).

Facing resistance (Pa·s/m): 400

Rayls — fabric/scrim in series with the holes. Not the same as resistivity.

Space Dimensions

Height is always used. Length × width set the starting rectangle; a custom 2D plan on tab 4 replaces floor area and wall length.

Length (m): 5.0

Width (m): 4.0

Height (m): 2.8

Occupancy and climate

People in the room: 0

Seated-person sabins added to the Eyring absorption. Empty = unoccupied RT60.

Air temperature (°C): 20

Relative humidity (%): 50

ISO 9613-1 air absorption and speed of sound. Panel impedance stays at 20 °C.

Untreated surfaces

Floor

Walls

Ceiling

Treatment Allocation

Panels cover walls first, then ceiling, then floor. Remaining area keeps the surface material α(f).

Number of Installed Panels: 6

Surface Size per Panel (m²): 1.2

Installed cost (per m²): 95

SKU WM-P12-MF. Total uses panel count × area × this rate.

Program targets

Program sets the spectrum shape and the RT60 target band. Operating SPL is the level at 1 m and moves the spectrum on the graph. Neither changes the room decay calculation.

Program

Operating SPL at 1 m (dB): 85

Reference level at 1 m. The 2D plan uses this for listener SPL. Not a physics input to RT60.

Floor plan

Draw any outline, then drag S (source) and L (listener). Height and finishes come from Room Layout; program and SPL from Audio Source; panel absorption from Resonator.

Drag corners to reshape. Drag S and L to move source and listener.

Source height (m): 1.5

Listener height (m): 1.2

Used for floor and ceiling first reflections. 2D plan is still the floor outline.

Wave paths

Direct 1st bounce 2nd bounce 3rd bounce

Show waves draws only ticked orders (red / yellow / green / blue). 3rd bounce is often weak once the room is treated.

Ambient noise (dB): 35

Assumed background level at the listener, used for SNR only.

At the listener

Component absorption

Absorber · 63–4000 Hz

Peak Component Abs 0%

Resonant Center 0 Hz

Room Evaluation Calculating...

RT60 —

DRR —

SNR —

1/3 oct	α	RT60

Panel Engineering

Space Dimensions

Occupancy and climate

Untreated surfaces

Treatment Allocation

Program targets

Floor plan

At the listener

Component absorption

Indicative calculation