III.3.4 Full beam-tracing technique
And here we can finally see the whole beam-tracing in operation in a more complex geometry. It has an option to include any of the beam-tracing levels into the simulation. Please, note that the actual result, i.e., the resulting valid specular reflection paths, should remain the same for the image-source method and all the versions of beam-tracing as the beam-tracing can be seen as an computational optimization of the image-source method that doesn't sacrifice anything in the accuracy.

The efficiency of the techniques presented above depends highly on the actual geometry that is to be simulated. For example, in the figure below it is possible to notice that the 'Full beam-clipping' provides only modest gain in the 'Concert hall' scenario whereas in the 'Maze' it is essential and the only way to reach the maximum available reflection order. This is since the 'Maze' has plenty of occlusions caused by surfaces hiding each other such that in any given location only a small fraction of surfaces is visible.

- Switch between different versions of beam-tracing and image-source technique, and see the numbers of image sources as well as the number of valid paths in each case.
- Similarly, you can investigate the changes in the resulting image-source tree.
- By selecting 'Branch of the image source tree' visualization you can see a single branch of the tree and the associated ray path. Move the listener around in this mode and see when the path becomes valid or invalid. You can move forward and backward in the tree with the '<' and '>' buttons.
- The 'Single beam' visualization shows one beam and highlights the surfaces that are inside the beam.

Show outside Zoom:
Reflection orders: Direct sound 1st 2nd 3rd 4th 5th 6th to 8th 9th to 15th 16th to 30th
Visualization: Wavefronts Full ray paths Raylets | Beam visualization: None All beams Branch of the beam tree Single beam
Show image sources: Plain image source method Basic beam-tracing Basic beam-clipping Full beam-clipping
Number of image sources: Number of ray paths: