Acoustical Heritage in Hagia Irene

Saint Irene, Byzantine church was modelled as part of the CAHRISMA project (Conservation of the Acoustical Heritage by the Revival and Identification of the Sinan’s Mosques Acoustics). Hagia Irene has an approximate volume of 39000 m3 and reverberation time of 4.3 sec (1000 Hz).

Measurements were simulated in 33 source-receiver pairs – here we are having a look around the room.

Wireframe of the Hagia Irene church, displaying source and receiver positions (for the simulated parameters).

Source 1 active. Examples of simulated room acoustic parameters compared to the real measured values.

Source 2 active. Examples of simulated room acoustic parameters compared to the real measured values.

Source 3 active. Examples of simulated room acoustic parameters compared to the real measured values.

Source and receiver positions (for the auralisations).

Demo sounds
View from receiver
Demo sound
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pause_circle_filled
Receiver position 1
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Receiver position 2
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Receiver position 3
volume_down
volume_up
volume_off
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Receiver position 4
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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: Hagia Irene.

Below is a comparison of an in-situ recording vs. an auralisation, made as part of the CAHRISMA project.

  • In-situ recording: The singer or “imam” was recorded on location.
  • Auralisation with in-situ recorded impulse response: The binaural impulse response was obtained using a sweep-based measuring system. The sound source used for recording of the binaural room impulse responses acts as a low-pass filter and high frequency information is missing from these sound examples.
Demo sounds
play_circle_filled
pause_circle_filled
In-situ recording
volume_down
volume_up
volume_off
play_circle_filled
pause_circle_filled
Auralisation
volume_down
volume_up
volume_off
View from receiver