Tutorial on How Many Rays to Use
The number of rays, especially the ones called late rays, will determine how accurate the results are. However, it will also extend the calculation time. There is no correct answer in how many rays you need. It all depends on the accuracy you need, the time you have, the complexity of your room, if the distribution of sound absorption is uneven, and more. However, there are some tips in the following videos.
Calculation parameters in the Room Setup
This video covers some of the most important parameters to set up in the Room Setup, one of the main ones being the late rays. Below are the timestamps for the chapters referring specifically to late rays.
2:48 What are late rays
3:36 Setting up number of late rays
Investigation of simulation parameters
This is a tool for evaluating the optimum choice of the calculation parameters: “Number of early rays”, “Number of late rays” and “Transition order”.
0:30 Selecting jobs
1:34 Late rays and transition order
2:35 Selecting reference parameters
3:58 Running the investigation
5:36 Investigation results