Teamwork Room Acoustics
Kategorie: Acoustics
Measurement and acoustic planning of a room in the Dresden Technical Collections. Together with Pia, Mathias and Leonard.
You can download the complete thesis here.
Grade: A.
The image above shows a rendering of the CAD model with all acoustic measures.
The task was to record the acoustic situation in a room of the Dresden Technical Collections. To do this, we took 18 measurements of the reverberation time together. I created the CAD model from the room geometry that we measured in-situ. Together with Leonard, I then created the model in ODEON. We validated the model by correcting the large floor area and concrete ceiling.
At the same time, I created a concept for the exhibition space with the help of Christian Nocke’s informative book. As this is a large room with a long reverberation time, the basis for the design of the measures was the SABINE formula. The following graph shows the various absorbers and their surfaces.
The measures listed:
- Perforated plasterboard panels
- 50 m²
- Arranged in the ceiling system
- Absorption in the speech-relevant area
- Diffusion surfaces
- approx. 55 m²
- At the side of the ceiling absorber
- Spatial distribution of the sound
- Composite panel resonators (VPR)
- 28 m²
- On the side walls (printable)
- Low-frequency absorption and suppression of standing waves
- Melamine foam
- 2.5 m²
- In small size between windows
- Optional measure for problems at f = 2 kHz
In ODEON it is possible to carry out an auralisation to gain an impression of the acoustic improvement. The audio excerpts contain a transmitter (LS3), a receiver (M5) and 2 background transmitters (LS1 + LS2). The situation simulates a guided tour through the museum, with other people in the room in addition to the main speaker.
