- Author
- O'Connor, D. J.
- Title
- Directional Sound.
- Coporate
- Schirmer Engineering Corp., Deerfield, IL
- Journal
- NFPA Journal, Vol. 99, No. 3, 50-56, May/June 2005
- Keywords
- noise (sound) | exits | human behavior | education | training | fire alarm systems | refuge | evacuation
- Identifiers
- directional sound to indicate exits; compatibility with traditional systems; influence on human behavior; line-of-sight methods