This product is a PDF that contains links to files that consist of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) as noted.

The noise ratings for the equipment used in air distribution systems are determined from laboratory testing that is done with optimal airflow aerodynamics at the equipment's inlet and discharge connections. Real-world HVAC systems often do not have these optimal aerodynamic conditions. This seminar shows how less-than-optimal airflow aerodynamics in and near air handling units, terminal boxes and diffusers can cause the systems to produce unexpected, excessive noise.

10-1 The Effects of Poor Aerodynamics On Diffuser Noise
Zaccary Poots, Nailor Industries
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)

10-2 Aerodynamic Effect of Terminal Unit Noise
Patrick Oliver, P.Eng., E.H. Price, Ltd.
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)

10-3 The Effect of Poor Aerodynamics On Air Handling Unit Noise
Mark E. Schaffer, P.E., Schaffer Acoustics Inc.
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)