FreeAcoustics.tools

Find the bass frequencies where your room resonates (boomy or dead spots). Enter room dimensions to see which frequencies will be problematic and where to place bass traps.

Calculate how long sound lingers in your room (reverb). Too echoey? Too dead? This tells you how much acoustic treatment you need to hit your target for studios, offices, or classrooms.

How well does your wall block voices, TV, and music? Enter your wall construction to see if it meets code and how to improve it. Higher STC = quieter neighbors.

How well does your floor block footsteps and dropped objects? Choose your floor assembly to see if neighbors below will hear you walking. Higher IIC = less stomping noise.

Can people in the next room hear your conversations? Combines wall performance and background noise to rate privacy from "confidential" to "no privacy." For offices, clinics, and meeting rooms.

Is your HVAC too loud for your space? Enter sound levels by frequency to get an NC rating and see if it meets standards for studios, offices, or classrooms. Lower NC = quieter HVAC.

Not sure which calculator to use? Answer a few questions about your acoustic issue — boomy bass, echo, neighbor noise, footsteps — and we'll point you to the right tool.

Learn the fundamentals of room acoustics, sound isolation, and noise control. Guides cover room modes, RT60, STC, IIC, speech privacy, and background noise.