Estimate how much sound may pass through a wall after soundproofing. Enter the starting noise level, wall rating, leak penalty, and optional door or window weak spot to calculate effective reduction, final sound level, and transmitted energy.
Starting noise level:
Enter the sound level on the noisy side of the wall.
Wall rating:
Enter the estimated sound reduction or STC-style value for the wall assembly.
Real-world penalties:
The calculator subtracts penalties for leaks, gaps, doors, windows, and other weak spots to estimate effective reduction.
A wall soundproofing calculator helps estimate how much noise may remain after passing through a wall or partition. It can be useful for bedrooms, apartments, offices, home theaters, studios, shared walls, rental units, and noise-control planning.
This is a simplified estimate. Actual sound isolation can vary by frequency, wall construction, air gaps, framing, outlets, vents, doors, windows, ceiling paths, floor paths, and installation quality.
This calculator uses a simplified sound reduction estimate:
Start with the wall’s sound reduction rating, subtract penalties for gaps and weak spots, then subtract the effective reduction from the starting noise level.
Common soundproofing methods include sealing gaps, adding mass, decoupling the wall, damping vibration, and adding insulation inside the cavity.
No. Wall soundproofing blocks sound from passing through a wall. Acoustic panels mainly reduce reflections and echo inside a room.
Sound may travel through gaps, doors, windows, outlets, vents, ceiling paths, floor paths, framing, or other flanking paths around the wall.