OR-05-6 Symposium on Low-Frequency HVAC Noise in Buildings and Its Effect on the Comfort and Productivity of the Occupants OR-05-6-1 Assessment and Regulation of Low Frequency Noise Geoff Leventhall . 655 OR-05-6-2 What Did We Learn from ASHRAE RP-879? Norm Broner . 66 1 OR-05-6-3 Adverse Effects of Moderate Levels of Low Frequency Noise in the Occupational Environment K. Persson Waye . 672 OR-05-6-4 Relating Human Productivity and Annoyance to Indoor Noise Criteria Systems: A Low Frequency Analysis E.E. Bowden and L.M. Wang . 684