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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Receiver position 1
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View from receiver
Demo sound
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Receiver position 2
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View from receiver
Demo sound
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Receiver position 3
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View from receiver
Demo sound
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Receiver position 4
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View from receiver

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
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In-situ recording
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Auralisation
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View from receiver