Durham School of Architectural Engineering and Construction


Date of this Version



Published in Architectural Engineering 2003 - Building Integration Solutions, ed. Mingsheng Lui and Kevin M. Parfitt, Proceedings of the Architectural Engineering 2003 Conference, September 17-20, 2003, Austin, Texas. Sponsored By Architectural Engineering Institute of American Society of Civil Engineers, Reston, VA: ASCE, 2003.


Currently there are a number of indoor noise criteria used to quantify the level of background noise in rooms, including Noise Criteria (NC), Balanced Noise Criteria (NCB), Room Criteria (RC), Room Criteria Mark II (RC Mark II) and others. This paper reviews the pros and cons of each of these and then compares the values measured in existing classrooms in the Omaha area. The authors are in the process of subjectively comparing these various criteria to determine which method best correlates with human perception. The subjective testing methods and preliminary results are discussed.