by ABD Engineering and Design | Noise and Vibration
Generally speaking, sound systems in industrial spaces are there to serve two purposes. One is to reproduce pages for people in the plant to hear. The second is to play background music for people to listen to. For years, it's been about that simple. An amplifier,...
by ABD Engineering and Design | Noise and Vibration
Fundamentally, sound is "that which we hear". What we hear at any given time can greatly influence us. We use sound to communicate, to express warning, fear, pleasure and excitement. Some sounds can relax us and help us fall asleep, while other sounds can distract us...
by ABD Engineering and Design | Noise and Vibration
Over the years as an acoustical consultant I've seen a lot of architectural firms locate rooftop air handling units over or near acoustically sensitive spaces; then they put up resistance to doing the necessary extensive noise controls that are needed for such a...
by ABD Engineering and Design | Acoustics
It seems like everyone is talking about decibels these days: "5 dB of this" and "3 dB of that." As acoustical consultants, we hear people using these metrics and often wonder to ourselves, "Do they really know what a decibel is?" Occasionally, someone is brave enough...
by ABD Engineering and Design | Noise and Vibration
OSHA, The Occupational Safety and Health Administration, has long had policies regulating noise in the workplace. Their "Hearing Conservation Program" is designed to protect workers from suffering hearing loss even if they are subject to loud noise exposures over...
