MONDAY MORNING, 2 DECEMBER 2013 GOLDEN GATE 4/5, 9:00 A.M. TO 11:45 A.M Session 1aAA Architectural Acoustics: General Topics in Architectural Acoustics 1a MON. AM Steven D. Pettyjohn, Chair The Acoustics & Vibration Group, Inc., 5700 Broadway, Sacramento, CA 95820 Contributed Papers 9:00 mechanisms allows us to predict how this ability is lost in the presence of reflections and noise, and to predict a number of ways that real clarity can 1aAA1. Toward reliable metrics for Sacred Harp singing spaces. be measured and optimized in classrooms, lecture halls, and performance Benjamin J. Copenhaver, Scott J. Schoen, and Michael R. Haberman venues of all types. This paper will describe and demonstrate how reflec- (Mech. Eng. Dept. and Appl. Res. Labs., The Univ. of Texas at Austin, P.O. tions degrade the closeness or clarity of sounds, and how this degradation Box 8029, Austin, TX 78713-8029,
[email protected]) can be prevented or ameliorated. Examples of old and new spaces with ei- Sacred Harp singing, a common type of shape-note singing, is a centu- ther excellent or poor clarity will be presented, along with a few examples ries-old tradition of American community choral music. It is traditionally a of recent improvements to existing halls. participatory form of music with no distinction between performers and au- dience, a characteristic that makes for acoustical requirements that differ 09:45 considerably from those of a concert hall or even a typical worship space. In the spirit of the text Concert Halls and Opera Houses by L. Beranek, we 1aAA4.