Reverberation in Grundtvigs Church

The complicated room acoustics of cathedrals and mosques are presented with ease by the auralisation methods used in ODEON. This example takes you to three different spots in a model of the Grundtvigs Church – a large cathedral in the northern part of Copenhagen, Denmark. The dimensions of the church are approximately (L x W x H) = (63 x 30 x 20) metres and the overall reverberation time ranges from 12.5 seconds at 63 Hz to 1.4 seconds at 8 kHz.

In the auralisations below, there are two groups of sources. Group 1 is the four left-most sources, while group 2 is the four sources in the middle. Each auralisation only has one group active at a time.

Anechoic source signal
Layout
Anechoic source signal
play_circle_filled
pause_circle_filled
Guillaume de Machaut: "Kyrie"
volume_down
volume_up
volume_off
Layout
Demo sounds
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Group 1, receiver 1
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Group 1, receiver 3
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Group 1, receiver 4
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Group 2, receiver 2
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Group 2, receiver 3
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Group 2, receiver 5
volume_down
volume_up
volume_off
View from receiver

Below you may download an ODEON zip archive for the above example, which is a packaged ODEON model (for ODEON 15.15 Auditorium or Combined) containing all the necessary files to run it: material list, geometry, source and receiver placements, etc. ODEON zip archives may also contain the calculated jobs, however, the file below does not include the calculated jobs. You may find ODEON zip archives for other examples here.

To unzip an ODEON zip file:

  1. Launch ODEON
  2. Go to File > Zip > Unzip archive
  3. Select your downloaded ODEON zip file
  4. Select a folder to extract the files 
 

ODEON will then automatically load the room.

ODEON zip file download

Room: Grundtvigs Church. Anechoic recording: Guillaume de Machaut: “Kyrie”, produced by the University of Bologna

Below are some older, additional auralisations, where a bassoon duo is simulated using a two track recording and simulating two sources in the church. In these examples, all receivers are directed towards the altar and the source, and it is easy to notice the long reverberation time.

Anechoic source signal
Layout
Anechoic source signal
play_circle_filled
pause_circle_filled
Basoon duo
volume_down
volume_up
volume_off
Layout
Demo sounds
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
R1, close to sources
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
R2, no direct sound
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
R3, rear part
volume_down
volume_up
volume_off
View from receiver