In this task we visited 4 different acoustically interesting locations in order to get a sense of how different spaces sound. We used both our ears and recording equipment as tools for analysing and evaluating the space in terms of its acoustic qualities.
Measurements Performed
In each of the 4 places, 2 sets of measurements have been performed. The first one using the ORTF microphones and the second one using the Binaural microphones mounted on a pair of glasses to record the sound at the ear's position. A sound meter level was also used to measure the background noise.
For 3 different positions, one speech (1 meter distance between the receiver and the speaker) made by a member of the group, a short music (1 meter distance) and a paper bag explosion (several meter in order to avoid the near field problem for the reverberation time) have been recorded with the two sort of microphones.
The four locations were:
* High tension laboratory at Chalmers - Kopparbunken
It's a high tension laboratory of Electrical Engeering of Chalmers. This huge, almost empty, room of 17m high, is a hexagonal shape. All the walls are in flat concrete, and the floor is made with a reflecting material. All this gave us an impression of a long reverberation time and a bad speech intelligibility. Moreover all the fans were on, which created an high background level.
More discussion can be found one the measurements page.
* A rectangular reverberation room - Chalmers V-Building I
* A big lecture room - Chalmers V-Building II
* Göteborgs Universitet Musikhögskolan Concert Hall