Storage Room:

Claps:

The storage room is about 3×3 meters. The walls, ceiling and floor are all made in a concrete finish. This room can also function as a bunker, this is why ti has a ventilation system. It also has a small window in the center of a wall. During the day you sometimes can hear birds chirping and other stuff happening in the outside world. In the evening when the world is quieter you can hear the piping of the building, probably the water pipes. Even though the reverb decayed fast, I was very surprised that the room sounds bigger than it is. I think because of the concrete walls the reverb was rather high for a such small room. I also found it interesting that the different distances didn’t sound that much different. I think it’s because in this small room the early reflection of the reverb gets fast to the microphone and because of the concrete walls they bounce alot. I also tried to get a flatter echo but I think because of the shelfs in this room It didn’t work. It would be interesting to remove the shelfs to try to get a flatter echo.

Surfaces:

There are no clearly identifiable acoustic absorbers in this space. The room is dominated mainly by hard and smooth surfaces, which means that most of the sound is reflected rather than absorbed. One possible exception might be the empty cardboard boxes on the top shelf. Because cardboard is lighter and less rigid than the surrounding materials, and because the boxes contain air, they could provide a small amount of sound absorption, although probably only to a limited extent and more in the higher frequency spectrum. The wooden shelves themselves are also unlikely to absorb much sound. Instead, due to their uneven arrangement, they probably scatter the sound and thus act as diffusers.

Passage HPF to HPT

This space is vis-a-vis of the HIT building on top of the garage. It’s about 5 meters wide and 20 meters long. The space is open on the two longer sides. One of the 2 open side has a lot of foliage.
Sounds which get produced outside of this space don’t get much acoustic characteristics when entering the space. I think it’s because of the sound waves not hitting any surfaces, namely ceiling or floor. But the sounds generated from within the space do get some acoustics. The first 2 meters you almost hear no reverberation but starting from 2 meters you can start to hear the reverb quite good. The reverb “forms” a flutter echo. I guess most of the reverb comes from the hard ceiling and the entrances on either side. I think it’s a very interesting intersection between indoor and outdoor. Ignoring sourounding sounds I probably couldn’t assign these spaces with a 100% accuracy to indoor or outdoor. I find it fascinating where the threshold lies between people perceive a recording as indoors or outdoors.

Surfaces:

Interesting in this space is that 2 sides are open. The fully open side to the right functions as an infinite absorber (sky). On the lower third of this open right side there is a glass fence. iThis fairly hard Material(Glass) probably reflects the incoming sound waves quite hard. On the open left side there are growing trees and bushes. They scatter the sound an act as a diffuser.
The ceiling as well as the floor are made out of fairly hard materials. and at the ends are glass doors. these hard surfaces reflect the sound also pretty good. This is probably the reason for the flutter echo.