Yann
Yann modelled the room in the software and let HTM predict the expected acoustic behaviour, then went to check those predictions with a measurement microphone, using REW. It was that comparison, made on an already-finished room, that convinced him of the tool's reliability.
“On my previous room, I took all my REW curves and compared them with the RT60 values predicted by HTM, band by band. The differences were minimal, well within what I would expect with a measurement mic. I also liked the cable-length calculation.”Yann
Today, Yann is building a dedicated room, this time with concrete walls: a very different acoustic context from his previous room, and stricter design constraints. He was able to use HTM and compare the results against manual measurements.
Before the build was even finished, HTM let him:
- easily model his room in 3D, with the real constraints of the site (concrete walls, final dimensions);
- anticipate the room's acoustic behaviour before the first treatment was installed;
- confirm his RT60 values, found again later during the first REW measurements once the room was built;
- save time in the design of the project, by settling certain choices before they were set in concrete, quite literally.
Yann also highlights a very useful feature: the projector-position simulation. It let him check the placement of the unit and the resulting image size before installation, rather than discovering it afterwards with a tape measure and the zoom control.
“The projector simulation: it let me check the placement and the image size before I had even installed anything.”Yann
For Yann, HTM's value lies less in a promise of perfection than in its consistency: what the software announces before the work is what he then finds at the microphone. Enough to move forward on a project as demanding as a concrete room with a little less uncertainty.



