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 auralizations).

Anechoic recording
play_circle_filled
pause_circle_filled
Anechoic recording
volume_down
volume_up
volume_off
Demo sounds
View from receiver
Demo sound
play_circle_filled
pause_circle_filled
Receiver position 1
volume_down
volume_up
volume_off
View from receiver
church 3d model
Demo sound
play_circle_filled
pause_circle_filled
Receiver position 2
volume_down
volume_up
volume_off
View from receiver
church 3d model
Demo sound
play_circle_filled
pause_circle_filled
Receiver position 3
volume_down
volume_up
volume_off
View from receiver
church 3d model
Demo sound
play_circle_filled
pause_circle_filled
Receiver position 4
volume_down
volume_up
volume_off
View from receiver
church 3d model

Below you may download an ODEON Zip Archive of this example, which is a packaged ODEON model (for ODEON Auditorium or Combined, 15.15 or newer) containing all the necessary files to run it: room geometry, assigned materials, source and receiver placements, anechoic recordings, etc. The extracted anechoic recordings can then be used for auralizations on any other room model. 

To unzip an ODEON Zip Archive:

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

ODEON will then automatically load the room.

ODEON Zip Archive download

Room: Hagia Irene.

We have more ODEON Zip Archives available for download, which include different room models and anechoic recordings.

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

  • In-situ recording: The singer or “imam” was recorded on location.
  • Auralization 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
Auralization
volume_down
volume_up
volume_off
View from receiver