12 July 2023

Round Robin 3 Case Study


The round robin 3 study examined a small but complex room with special diffusors. The room was measured and the material properties of all surfaces in the room were obtained in octave bands 125 Hz - 4k Hz. The study compared over 20 simulation tools to simulate the studio room of PTB institute. Results were given both with open curtains and closed curtains. The Schroeder frequency of this room is calculated Hz. A strong standing wave was present in the room and a large part of the wall area could be covered with curtains.

Key findings

  • Treble's wave-based solver can show how T30 changes with different positions, while the other GA software simulations can’t.
  • Treble's wave-based solver can predict T30 well at low frequencies, while the other GA software simulations overestimate absorption.
  • At higher frequencies, Treble's GA solver simulations underestimated less compared to other software's GA simulations.

Recent posts

27 September 2023

Live webinar: Treble Success Stories & New Features

Join us for this exclusive webinar where you will hear from some of our customers who have used Treble’s Acoustic Simulation Suite to achieve amazing results in their acoustic design and engineering. Joining us are acoustic experts Bradley Alexander& Ethan Bourdeau, as well as Finnur Pind who will be showcasing the newest features of Treble Acoustic Simulation Suite
19 September 2023

Training Webinar #2

Don’t miss the chance to learn from our CPO, Jesper Pedersen, in a free training webinar on Tuesday 19th of September, at 1.00pm UTC. He will show you how to use Treble Acoustic Simulation Suite effectively for your acoustic projects. You will learn how to import your geometries, compare design iterations in our auralizer, and set source a receiver positions, and much more. You will also have the opportunity to ask questions about Treble.
18 September 2023

Treble simulation of empty rectangular rooms with porous absorbers

The sound field in a rectangular empty room becomes more or less two-dimensional with a porous ceiling absorber since the vertical sound field energy diminishes more quickly than for the horizontal sound field. In such a condition, the porous ceiling absorber can lower the reverberation time effectively at low frequencies. This documentation shows how the sound field changes with two different porous layer configurations in both measurements and treble simulations.