Friday, March 6, 2015 4:00pm in ETC 4.150
David A. Nelson, INCE Bd. Cert., PE
The common conception of an environmental noise criterion is a lone dB(A) value. It’s easy to remember, measure, and litigate. But depending on the type of noise, it might not correlate with community experience. And without instructions for how to make the measurement, it could be essentially worthless. As with product sound quality, the complexity of human perception plays a major role in determining individual reactions to a given sound. Thus a more refined approach to evaluating sound may be required. Finally, each individual has their own perception of the proper balance between the benefit of making the noise and the cost of consuming it. A number of empirical studies reveal the degree of community reaction expected in given situations, allowing something like a cost-benefit analysis. These concepts have been applied for a recent project to develop a criterion for industrial noise in a semi-rural area. We’ll discuss the anatomy of that criterion and the importance of the companion measurement protocol. We’ll also discuss applications in other environments and/or for music as a noise source.