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.

All photographs and audio recordings featured in this project were captured by the research team, under the supervision of Dr. Doyuen Ko, with the express consent of the participating churches. Distribution, reproduction, or commercial sale of this data, in whole or in part, is strictly prohibited without prior written permission.

Research Team

Supervisor

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

Graduate Research Assistants

Recording Equipment

The microphone array and playback rig varied between measurement trips. The configuration used at each church is listed below by state.

Tennessee Churches

  • 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
  • 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

Kentucky & Indiana Churches

  • Front 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
  • 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

New Mexico Churches

  • Front 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
  • Speaker: Yamaha DXR12 12" Powered Loudspeaker - sole playback source, no subwoofer
  • 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.

Cane Ridge Meeting House

1655 Cane Ridge Rd, Paris, KY • Built 1791

A log church built by Scots-Irish Presbyterians in Bourbon County. Site of the 1801 Cane Ridge Revival, the climax of the Second Great Awakening, drawing an estimated 20,000–30,000 people. A stone shrine was built over the structure in 1957 to preserve it.

First Presbyterian Church

171 Market St, Lexington, KY • Founded 1784

The oldest congregation in continuous existence in Lexington. Pastor Robert J. Breckinridge, a noted anti-slavery voice, hosted Abraham Lincoln at a Thanksgiving service in 1847. The current Gothic Revival building was completed in 1872, designed by Cincinnatus Shryock.

Basilica of St. Francis Xavier Proto-Cathedral

205 Church St, Vincennes, IN • Est. c. 1734

Known as "Indiana's Oldest Church," the parish dates to a log church built beside Sieur de Vincennes' fort on the Wabash River. The current building, begun in 1826, was modeled on the Basilica of St. Joseph in Bardstown, Kentucky and holds murals by Wilhelm Lamprecht and a crypt containing the four bishops of Vincennes. Named a cathedral in 1834 and elevated to Minor Basilica by Pope Paul VI in 1970.

Monastery Immaculate Conception

802 E 10th St, Ferdinand, IN • Est. 1867

Home of the Ferdinand Benedictines, the second largest community of Benedictine sisters in the United States. Known as the "Castle on the Hill," the Romanesque church was built from 1915 to 1924 and features Italian marble floors, German hand-carved woodwork, an 87-foot-high dome, and 89 angels in its interior. Listed on the National Register of Historic Places; its full restoration was an Official Project of Save America's Treasures.

St. Augustine Catholic Church

71 Tribal Rd 35, Isleta, NM • Est. 1613

One of the oldest mission churches in the United States, originally named St. Anthony and renamed in 1716. Built of adobe made on site, with walls roughly 10 feet thick at the base and a roof carried on overhead logs called vigas. An extensive 1962 renovation under Father Staadtmueller restored the traditional pueblo-style flat roof and refinished the exterior in cement plaster.

Santuario de Nuestra Señora de Guadalupe

100 S Guadalupe St, Santa Fe, NM • Built 1776–1795

The oldest extant shrine to Our Lady of Guadalupe in the United States, built of adobe on a cruciform plan for Santa Fe's Guadalupe District. Its vigas, corbels, and choir loft came from La Castrense, a Santa Fe military chapel. Designated a historic site on three trails — the Santa Fe Trail, El Camino Real de Tierra Adentro, and the Old Spanish National Historic Trail.

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. Binaural Rendering - Press the headphone button to the left of play to switch between ordinary stereo and a binaural render made for headphones. Binaural plays the same auralization through a pair of virtual loudspeakers 30° to either side of you, filtered the way your head and ears would filter real speakers there, so the church opens up around you instead of sitting inside your head. Safe to press while audio is playing.
  8. 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

  • 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 takes effect straight away, so you can step around a church and hear the room change from where you stand.
  • Toggle binaural rendering mid-playback to hear what it does. Both modes carry the same auralization; only the way it reaches your ears changes. Use headphones — over speakers the effect is lost, because your own room filters the sound a second time.
  • The collection spans twelve churches across Tennessee, Kentucky, Indiana, and New Mexico. Play the same source file through several of them to hear how size, shape, and building materials shape the sound, from the intimate Cane Ridge Meeting House and its 27.59 ft ceiling to Monastery Immaculate Conception beneath an 87.61 ft dome.

Select Source File

Room Dimensions

Receiver to Speaker Distances