Aural Heritage Preservation of Historic American Churches
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About the Project

As historically significant church buildings are remodeled and destroyed, we also lose the aural heritage that has shaped America's diverse Christian narratives. This project has the following specific objectives:

  1. Capture and preserve the aural heritage data of historically significant American churches
  2. Develop a widely accessible digital repository for artists, researchers, and the public
  3. Support interdisciplinary artistic and scholarly projects utilizing the reconstructed aural heritage data

The aural heritage data and auralization products created by the project are available for free and open access. The data is documented as impulse responses (IRs) digital audio files widely used in audio engineering, acoustics, and music research.

This project is generously supported by The Creative Arts Collective for Christian Life and Faith.

Research Team

Supervisor

Dr. Doyuen Ko (Audio Engineering Technology, Belmont University)

Graduate Research Assistants

  • Kritan Duwal
  • Lee Smith
  • Sihyeon Park

Recording Equipment

Microphones

  • Front L/R: Earthworks QTC 40 - Omnidirectional, 3 Hz-40 kHz, 140 dB max SPL
  • Rear L/R: Earthworks QTC 1 - Omnidirectional, 4 Hz-40 kHz, 142 dB max SPL
  • Center: Rode SoundField NT-SF1 - 4-channel Ambisonic, 20 Hz-20 kHz

Playback & Recording

  • Monitors: JBL 308P MKII 8" Powered Studio Monitor - 112 W, 37 Hz-24 kHz
  • Subwoofer: JBL LSR6312SP - 28 Hz-80 Hz
  • Interface: Focusrite Clarett+ 8Pre USB-C - 24-bit/192 kHz, 8 preamps

About the Churches

Select a church in the View tab and click Church Info for the full historical write-up and acoustic measurement data. Brief summaries are shown below.

First Baptist Church Capitol Hill

625 Rosa L. Parks Blvd., Nashville, TN • Est. 1843

A historic predominantly African American church with deep ties to the Civil Rights Movement. James Lawson hosted civil protest workshops here attended by Diane Nash, John Lewis, and others. Listed on the National Register of Historic Places.

Church of the Holy Trinity

615 6th Ave S., Nashville, TN • Est. 1849

A Gothic Episcopal church designed in the English Parish style by New York firm Dudley and Wills. Served as an armory during the Civil War and became an all-Black congregation in 1896. Listed on the National Historic Register since 1972.

Christ Church Cathedral

900 Broadway, Nashville, TN • Consecrated 1831

The first Episcopal church in Tennessee, designed in the Victorian Gothic style by Francis Hatch Kimball. Known for 55 memorial stained-glass windows and a historic pipe organ. Became the Cathedral of the Diocese of Tennessee in 1997.

Bridge Community Church

4916 Franklin Pike, Nashville, TN • Korean Baptist

A Korean immigrant congregation affiliated with the Southern Baptist Convention, meeting in the former home of country music legend Hank Williams — a Nashville landmark purchased and preserved in 1978.

Church Street United Methodist

900 Henley St., Knoxville, TN • Est. 1816

A Gothic Revival landmark completed in 1931, designed by architects Charles I. Barber and John Russell Pope. Features a Hugh Tyler mural, intricate stained-glass windows, an antiphonal pipe organ, and a bell tower silent for 75 years before 2006.

Downtown Presbyterian Church

154 Rep. John Lewis Way N., Nashville, TN • Est. 1814

Designed by William Strickland in the Egyptian Revival style and completed in 1851. Considered by many to be "the single most important Egyptian Revival building in the world." Designated a historic landmark in 1993.

How to Use

  1. Select a Church - Use the "Select Church" dropdown in the control bar to choose a recording location. The panoramic photo will update to show the interior of that space.
  2. Choose a Receiver Position - A floorplan overlay will appear in the top-right corner of the view. Click one of the blue R1, R2… buttons to select where you are placed inside the church. The yellow S button marks the fixed sound source position. The panoramic view will rotate to show the perspective from that position.
  3. Indicator Colors - After selecting a position, the S and R buttons will turn green if a valid impulse response exists for that combination, or red if the recording is not available.
  4. Adjust Room Reverberation - The slider controls how much of the church reverb is applied. All the way left (Less) plays the source with no reverb; all the way right (More) applies the full acoustic character of the space.
  5. Select a Source File - Click "Select Source File" to choose the audio that will be played through the church's acoustics. When running locally, a list of bundled source files appears. You can also browse for any WAV or MP3 file on your computer.
  6. Play / Pause - Press the circular button in the bottom-right corner to start playback. The button switches to a pause icon while audio is playing. Press it again to stop.
  7. Church Info - Once a church is selected, click the Church Info button in the bottom-left of the view to read its full history, address, measurement date, room dimensions, and receiver-to-speaker distances.

Tips

  • Use headphones for the best binaural experience.
  • Try the "Sermon" source file with a large church and a wet mix to hear how speech carries in the space.
  • Switching receiver positions while audio is playing will not interrupt playback, changes take effect on the next play.
  • Christ Church Cathedral (R3) and Church Street United Methodist (R4) have the longest source-to-receiver distances and the most reverberant acoustic character.

Select Source File

Room Dimensions

Receiver to Speaker Distances