CATT-Acoustic
A rigorous ray-tracing engine for predicting how a space will really sound
What it is
About CATT-Acoustic
CATT-Acoustic models sound propagation within a 3D room geometry using detailed ray-tracing algorithms, producing predictions of reverberation time, clarity, and speech intelligibility. It's used by acoustic consultants alongside or as an alternative to ODEON, and is respected for its detailed, algorithmically transparent approach to room acoustic prediction.
What you can do with it
Capabilities
Build 3D acoustic models of rooms and performance spaces
Predict reverberation time, clarity (C50/C80) and STI
Auralise predicted room acoustics
Compare design options against acoustic targets
Export data to support compliance reporting
How to learn it
Learning Resources
CATT's official manual and tutorial documentation
Institute of Acoustics training and conference workshops
Academic acoustics courses that use CATT-Acoustic in coursework
Practise modelling a known, measured room and comparing results
Pro Tip
Cross-check your model against real measured RT60 data from a similar known space whenever possible — pure simulation without a reality check can drift a surprising amount.
Skills that use this tool
Roles that use this tool