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Noise in multiple-workstation open-plan computer rooms: measurements and annoyance
A Mital1, J D McGlothlin, H F Faard
1Ergonomics and Engineering Controls Research Laboratory, University of Cincinnati, Ohio 45221-0116.
Journal of Human Ergology
|June 1, 1992
Summary
Workplace computer room noise significantly impacts concentration and performance. High-frequency and low-frequency noise, particularly conversations and beeping, are major annoyances for many users.
Area of Science:
- Occupational Health
- Environmental Psychology
- Acoustics
Background:
- Modern workplaces increasingly utilize computers, leading to new technological challenges.
- Noise in open-plan computer rooms is a frequently reported issue affecting user concentration and perceived performance.
Purpose of the Study:
- To investigate user-reported difficulties with concentration and work performance in computer rooms.
- To measure and characterize the noise spectrum within typical computer rooms.
Main Methods:
- Experimental investigation in two typical computer rooms.
- Random measurement of noise levels and spectrum during working hours.
- User surveys to assess annoyance and perceived impact on concentration and performance.
Main Results:
- Noise levels ranged from 53-62 dB(A), with energy concentrated in high (above 2,000 Hz) and low (below 500 Hz) frequencies.
- The noise spectrum differed significantly from typical open-plan offices, with peak energy at 8,000 Hz.
- 50% of users found the noise extremely annoying (22-25 on a 25-point scale); 89% reported tasks requiring concentration.
- Conversational sounds and computer-printer beeps were the most cited annoyances.
Conclusions:
- Computer room noise, characterized by its unique spectrum and specific sound sources, poses a significant problem for user concentration and performance.
- Interventions targeting conversational noise, printer sounds, and other identified sources may be necessary to improve the acoustic environment.