This paper describes the architectural and acoustical challenges of building a sound-critical worship space in a dense urban setting. The plans for Redeemer Presbyterian Church’s new building construction on the Upper East Side of Manhattan called for a sanctuary with over 450 seats in a lot only 50 feet wide. To maximize the visual space, the church chose an asymmetric diagonal layout over a more traditional symmetric shoebox-style hall. The new acoustical issues posed by this design were modeled in CATT-Acoustic to examine the distribution of sound absorption, total reverberation time within the space, and Binaural Quality Index (BQI) at different listener positions.
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