Reverb Time Calculator
Calculate reverb decay time for room acoustics
About this calculator
The Reverb Time Calculator helps determine the decay time of sound reflections in enclosed spaces, measuring how long it takes for sound to decrease by 60 decibels (RT60). This tool is essential for acousticians, audio engineers, and architects designing concert halls, recording studios, theaters, and other acoustic environments. Proper reverb time calculation ensures optimal sound quality, speech intelligibility, and listener experience by balancing room acoustics with intended use.
How to use
Enter your room's volume in cubic meters or feet, then input the total absorption coefficient based on surface materials and furnishings. The calculator will instantly compute the RT60 reverb time using Sabine's formula. Compare results with recommended values for your specific room type to optimize acoustic performance.
Frequently asked questions
What is RT60 reverb time?
RT60 is the time required for sound to decay by 60 decibels after the source stops, effectively measuring how long echoes persist in a room.
What's the ideal reverb time for different rooms?
Recording studios need 0.3-0.6 seconds, concert halls require 1.8-2.2 seconds, while classrooms should have 0.6-0.8 seconds for optimal speech clarity.
How do I calculate total absorption coefficient?
Multiply each surface area by its material's absorption coefficient, then sum all values. Include furniture, carpets, curtains, and audience absorption coefficients.